reworked views and serializers to pass and take into account the "validation timestamp" to the model + refactored models to have a content validation method + adapted tests
authordurandn
Tue, 03 May 2016 14:32:28 +0200
changeset 610 b9edc1c1538a
parent 609 854a027c80ff
child 611 f0f07e2b841f
reworked views and serializers to pass and take into account the "validation timestamp" to the model + refactored models to have a content validation method + adapted tests
.settings/org.eclipse.core.resources.prefs
server/python/django2/renkanmanager/api/views.py
server/python/django2/renkanmanager/models.py
server/python/django2/renkanmanager/serializers.py
server/python/django2/renkanmanager/tests/v1_0/tests_renkan.py
server/python/django2/renkanmanager/tests/v1_0/tests_revision.py
--- a/.settings/org.eclipse.core.resources.prefs	Wed Apr 27 16:36:30 2016 +0200
+++ b/.settings/org.eclipse.core.resources.prefs	Tue May 03 14:32:28 2016 +0200
@@ -10,4 +10,7 @@
 encoding//server/python/django2/renkanmanager/migrations/0001_initial.py=utf-8
 encoding//server/python/django2/renkanmanager/migrations/0002_alter_models_and_populate_revisions.py=utf-8
 encoding//server/python/django2/renkanmanager/migrations/0003_auto_20160105_0954.py=utf-8
+encoding//server/python/django2/renkanmanager/migrations/0004_foreign_key_fields_initial.py=utf-8
+encoding//server/python/django2/renkanmanager/migrations/0005_foreign_key_fields_datamigration.py=utf-8
+encoding//server/python/django2/renkanmanager/migrations/0006_foreign_key_fields_remove_guids_and_set_nonnullables.py=utf-8
 encoding//server/python/django2/renkanmanager/utils.py=utf-8
--- a/server/python/django2/renkanmanager/api/views.py	Wed Apr 27 16:36:30 2016 +0200
+++ b/server/python/django2/renkanmanager/api/views.py	Tue May 03 14:32:28 2016 +0200
@@ -9,6 +9,7 @@
 import logging
 import uuid
 
+from django.db import transaction
 from django.core.urlresolvers import reverse
 from django.http import Http404
 from django.http.response import HttpResponse, HttpResponseBadRequest
@@ -34,7 +35,7 @@
         if workspace_guid == '':
             renkans = self.queryset.all()
         else:
-            renkans = self.queryset.filter(workspace_guid=workspace_guid)
+            renkans = self.queryset.filter(workspace__workspace_guid=workspace_guid)
         serializer = RenkanSerializer(renkans, many=True)
         return Response(serializer.data, status=status.HTTP_200_OK, content_type='application/json')    
     
@@ -47,7 +48,7 @@
                 source_renkan=Renkan.objects.get(renkan_guid=source_renkan_guid)
             except Renkan.DoesNotExist:
                 return Response({'detail': 'Source renkan '+source_renkan_guid+' does not exist'}, status=status.HTTP_404_NOT_FOUND)
-            source_revision_guid = source_renkan.current_revision_guid
+            source_revision_guid = source_renkan.current_revision.revision_guid
         if source_revision_guid is not None:
             try:
                 source_revision=Revision.objects.get(revision_guid=source_revision_guid)
@@ -62,10 +63,9 @@
             except Workspace.DoesNotExist:
                 return Response({'detail': 'Workspace '+workspace_guid+' does not exist'}, status=status.HTTP_404_NOT_FOUND)
             create_data["workspace_id"] = workspace_guid
-        
         serializer = RenkanSerializer(data=create_data)
         if serializer.is_valid():
-            serializer.save(creator=request.user)       
+            serializer.save(creator=request.user)     
             return Response(serializer.data, status=status.HTTP_201_CREATED, content_type='application/json')
         return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
         
@@ -81,7 +81,6 @@
         return self.queryset.get(renkan_guid=renkan_guid)
     
     def dispatch(self, *args, **kwargs):
-        logger.debug("TEST 1 21 12 TEST")
         return super(RenkanDetail, self).dispatch(*args, **kwargs)
     
     def get(self, request, renkan_guid, format=None):
@@ -89,10 +88,7 @@
             renkan = self.get_object(renkan_guid=renkan_guid)
         except Renkan.DoesNotExist:
             return Response({'detail': 'Renkan project %r does not exist'.format(renkan_guid)}, status=status.HTTP_404_NOT_FOUND)
-        logger.debug("RENKAN GET %r : CHECKING OBJECT PERMISSION", renkan_guid)
-        logger.debug("RENKAN GET: permission? %r", request.user.has_perm("view_renkan", renkan))
         self.check_object_permissions(request, renkan)
-        logger.debug("RENKAN GET: PERMISSION GRANTED")
         serializer = RenkanSerializer(renkan)
         if {'true': True, 'false': False, "0": False, "1": True}.get(request.GET.get("content_only", "false").lower()):
             return Response(json.loads(serializer.data["content"]), status=status.HTTP_200_OK, content_type='application/json')
@@ -119,19 +115,13 @@
             return Response(serializer.data, status=status.HTTP_200_OK, content_type='application/json')
         return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
 
+    @transaction.atomic
     def delete(self, request, renkan_guid, format=None):
         try:
             to_delete_renkan = self.get_object(renkan_guid=renkan_guid)
         except Renkan.DoesNotExist:
             return Response({'detail': 'Renkan project '+renkan_guid+' does not exist'}, status=status.HTTP_404_NOT_FOUND)
         self.check_object_permissions(request, to_delete_renkan)
-        renkan_revisions = Revision.objects.filter(parent_renkan_guid = to_delete_renkan.renkan_guid)
-        for child_revision in renkan_revisions:
-            # Deleting reference to revision in renkans copied from this revision
-            for related_renkan in self.queryset.filter(source_revision_guid=child_revision.revision_guid):
-                related_renkan.source_revision_guid = ''
-                related_renkan.save()
-            child_revision.delete()
         to_delete_renkan.delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
 
@@ -204,7 +194,7 @@
     
     def get_queryset(self, renkan_guid=""):
         if renkan_guid:
-            return Revision.objects.filter(parent_renkan_guid=renkan_guid)
+            return Revision.objects.filter(parent_renkan__renkan_guid=renkan_guid)
         else:
             return Revision.objects
     
@@ -224,7 +214,7 @@
     
     def get_queryset(self, renkan_guid=""):
         if renkan_guid:
-            return Revision.objects.filter(parent_renkan_guid=renkan_guid)
+            return Revision.objects.filter(parent_renkan__renkan_guid=renkan_guid)
         else:
             return Revision.objects
     
@@ -253,10 +243,5 @@
             return Response({'detail': 'You cannot delete the last remaining revision of a renkan from the Revision API. Try deleting the parent Renkan with the Renkan API'}, status=status.HTTP_400_BAD_REQUEST)
         if revision.is_current_revision:
             return Response({'detail': 'You cannot delete the current revision of a renkan from the Revision API.'}, status=status.HTTP_400_BAD_REQUEST)
-
-        # Deleting reference to revision in renkans copied from this revision
-        for related_renkan in Renkan.objects.filter(source_revision_guid=revision_guid):
-            related_renkan.source_revision_guid = ''
-            related_renkan.save()
         revision.delete()
         return Response(status=status.HTTP_204_NO_CONTENT)
--- a/server/python/django2/renkanmanager/models.py	Wed Apr 27 16:36:30 2016 +0200
+++ b/server/python/django2/renkanmanager/models.py	Tue May 03 14:32:28 2016 +0200
@@ -60,10 +60,7 @@
             initial_revision.modification_date = initial_revision.creation_date
         initial_revision.title = new_renkan_title if new_renkan_title else "Untitled Renkan"
         if new_renkan_content:
-            try:
-                new_renkan_content_dict = json.loads(new_renkan_content)
-            except ValueError:
-                raise ValidationError("Provided content to create Renkan is not a JSON-serializable")
+            new_renkan_content_dict = json.loads(new_renkan.validate_json_content(new_renkan_content))
             new_renkan_content_dict["created"] = str(initial_revision.creation_date)
             new_renkan_content_dict["updated"] = str(initial_revision.modification_date)
         else: 
@@ -82,8 +79,7 @@
         initial_revision.content = json.dumps(new_renkan_content_dict)
         initial_revision.save()
         return new_renkan
-
-
+    
 class Renkan(models.Model):
     
     renkan_guid = models.CharField(max_length=256, default=uuid.uuid4, unique=True, blank=False, null=False) # typically UUID
@@ -142,11 +138,8 @@
         else:
             revision_to_update = Revision.objects.select_for_update().get(revision_guid=self.current_revision.revision_guid)
         
-        updated_content = content if content else current_revision.content
-        try: 
-            updated_content_dict = json.loads(updated_content)
-        except ValueError:
-            raise ValidationError(message="Provided content for Renkan is not a JSON-serializable")
+        updated_content = self.validate_json_content(content) if content else current_revision.content
+        updated_content_dict = json.loads(updated_content)
         
         # If title is passed as arg to the method, update the title in the json
         if title:
@@ -166,6 +159,49 @@
         revision_to_update.last_updated_by = updator
         revision_to_update.save()
     
+    def validate_json_content(self, content):
+        """
+            Checks that the json content is valid (keys and structures), raise a ValidationError if format is wrong or value is wrong (for ids),
+            if a key is missing, autocompletes with the empty default value
+            
+            Returns the validated json string
+        """
+        try:
+            content_to_validate_dict = json.loads(content)
+        except ValueError:
+            raise ValidationError("Provided content to create Renkan is not a JSON-serializable")
+        if "id" not in content_to_validate_dict or content_to_validate_dict["id"] == "" :
+            content_to_validate_dict["id"] = str(self.renkan_guid)
+        if "title" not in content_to_validate_dict:
+            content_to_validate_dict["title"] = ""
+        if "description" not in content_to_validate_dict:
+            content_to_validate_dict["description"] = ""
+        if "created" not in content_to_validate_dict:
+            content_to_validate_dict["description"] = ""
+        if "updated" not in content_to_validate_dict:
+            content_to_validate_dict["description"] = ""
+        expected_workspace_id = str(self.workspace.workspace_guid) if self.workspace is not None else ""
+        if "space_id" not in content_to_validate_dict:
+            content_to_validate_dict["space_id"] = expected_workspace_id
+        if "nodes" not in content_to_validate_dict:
+            content_to_validate_dict["nodes"] = []
+        if "edges" not in content_to_validate_dict:
+            content_to_validate_dict["edges"] = []
+        if "views" not in content_to_validate_dict:
+            content_to_validate_dict["views"] = []
+        if "users" not in content_to_validate_dict:
+            content_to_validate_dict["users"] = []
+        
+        if type(content_to_validate_dict["nodes"]) is not list:
+            raise ValidationError("Provided content has an invalid 'nodes' key: not a list")
+        if type(content_to_validate_dict["edges"]) is not list:
+            raise ValidationError("Provided content has an invalid 'edges' key: not a list")
+        if type(content_to_validate_dict["views"]) is not list:
+            raise ValidationError("Provided content has an invalid 'views' key: not a list")
+        if type(content_to_validate_dict["users"]) is not list:
+            raise ValidationError("Provided content has an invalid 'users' key: not a list")
+        return json.dumps(content_to_validate_dict)
+        
     @transaction.atomic
     def delete(self):
         """
--- a/server/python/django2/renkanmanager/serializers.py	Wed Apr 27 16:36:30 2016 +0200
+++ b/server/python/django2/renkanmanager/serializers.py	Tue May 03 14:32:28 2016 +0200
@@ -1,6 +1,6 @@
-import json
-import uuid
+import json, uuid, datetime, time
 
+from django.db import transaction
 from django.contrib.auth import get_user_model
 from django.conf import settings
 from renkanmanager.models import Renkan, Workspace, Revision
@@ -10,9 +10,9 @@
 
 class RenkanSerializer(serializers.Serializer):
     id = serializers.ReadOnlyField(source="renkan_guid")
-    current_revision_id = serializers.ReadOnlyField(source="current_revision_guid")
-    workspace_id = serializers.CharField(source="workspace_guid", required=False)
-    source_revision_id = serializers.CharField(source="source_revision_guid", required=False)
+    current_revision_id = serializers.SlugRelatedField(source="current_revision", slug_field="revision_guid", read_only=True)
+    workspace_id = serializers.SlugRelatedField(source="workspace", slug_field="workspace_guid", queryset=Workspace.objects, required=False)
+    source_revision_id = serializers.SlugRelatedField(source="source_revision", slug_field="revision_guid", queryset=Revision.objects, required=False)
     revision_count = serializers.ReadOnlyField()
     created_by = serializers.SlugRelatedField(source="creator", slug_field=RENKAN_USER_DISPLAY_FIELD, read_only=True)
     last_updated_by = serializers.SerializerMethodField("get_current_revision_last_updator")
@@ -21,72 +21,59 @@
     creation_date = serializers.ReadOnlyField()
     modification_date = serializers.SerializerMethodField("get_current_revision_modification_date")
     create_new_revision = serializers.BooleanField(write_only=True, required=False) # only used for updating
+    validation_timestamp = serializers.CharField(write_only=True, required=False) # only used for updating is a content json is not provided
     
     # ADD ERROR HANDLING
     def get_current_revision_last_updator(self, renkan):
-        current_revision = Revision.objects.get(revision_guid = renkan.current_revision_guid)
-        return getattr(current_revision.last_updated_by, RENKAN_USER_DISPLAY_FIELD)
+        return getattr(renkan.current_revision.last_updated_by, RENKAN_USER_DISPLAY_FIELD)
     
     
     def get_current_revision_modification_date(self, renkan):
-        current_revision = Revision.objects.get(revision_guid = renkan.current_revision_guid)
-        return current_revision.modification_date
+        return renkan.current_revision.modification_date
     
+    @transaction.atomic
     def create(self, validated_data):
         """
             Method to create a new Renkan (and its first revision)
         """
         creator = validated_data.get('creator')
-        initial_revision = Revision.objects.create(
-            title = validated_data.get('title', 'Untitled renkan'),
-            creator = creator,
-            last_updated_by = creator
-        )
-        renkan = Renkan.objects.create(
-            current_revision_guid = initial_revision.revision_guid,
-            workspace_guid = validated_data.get('workspace_guid', ''),
-            source_revision_guid = validated_data.get('source_revision_guid', ''),
-            creator = creator
-        )
-        initial_revision.parent_renkan_guid = renkan.renkan_guid
-        initial_revision.content = validated_data.get('content', json.dumps(
-            {
-                "id": str(renkan.renkan_guid),
-                "title": initial_revision.title,
-                "description": "",
-                "created": str(initial_revision.creation_date),
-                "updated": str(initial_revision.modification_date),
-                "edges": [],
-                "nodes": [],
-                "users": [],
-                "space_id": str(renkan.workspace_guid),
-                "views": []
-            }
-        ))
-        initial_revision.save()
-        renkan.save()
-        return renkan
+        workspace_obj = validated_data.get('workspace', None)
+        source_revision_obj = validated_data.get('source_revision', None)
+        try:
+            return Renkan.objects.create_renkan(
+                creator=creator,
+                title=validated_data.get('title', ''),
+                content=validated_data.get('content', ''),
+                workspace=workspace_obj,
+                source_revision=source_revision_obj
+            )
+        except ValidationError as ve:
+            raise serializers.ValidationError(ve.args[0])
     
+    @transaction.atomic
     def update(self, renkan, validated_data):
         """
             Method to update a Renkan object. Creates a new revision if needed
         """
         updator = validated_data.get('updator')
-        current_revision = Revision.objects.get(revision_guid=renkan.current_revision_guid)  
-        if validated_data.get("create_new_revision", False):
-            revision_to_update = Revision.objects.create(creator=updator)
-            revision_to_update.parent_renkan_guid = renkan.renkan_guid
-            renkan.current_revision_guid = revision_to_update.revision_guid
+        create_new_revision = validated_data.get("create_new_revision", False)
+        title = validated_data.get('title', renkan.current_revision.title)
+        content = validated_data.get('content', '')
+        if not content:
+            content = renkan.current_revision.content
+            if not 'validation_timestamp' in validated_data:
+                raise serializers.ValidationError("No validation timestamp and no content json to extract it from")
+            validation_timestamp = validated_data.get('validation_timestamp')
         else:
-            revision_to_update = current_revision
-        revision_to_update.title = validated_data.get('title', current_revision.title)
-        revision_to_update.content = validated_data.get('content', current_revision.content)
-        revision_to_update.last_updated_by = updator
-        revision_to_update.save()
-        if not updator.has_perm('view_revision', revision_to_update):
-            assign_perm('view_revision', updator, revision_to_update)
-            assign_perm('delete_revision', updator, revision_to_update)
-        renkan.save()
+            validation_timestamp = json.loads(content).get("updated", "")
+        if title != json.loads(content).get("title", ""):
+            content_dict = json.loads(content)
+            content_dict["title"] = title
+            content = json.dumps(content_dict)
+        try:
+            renkan.save_renkan(updator=updator, timestamp=validation_timestamp, title=title, content=content, create_new_revision=create_new_revision)
+        except ValidationError as ve:
+            raise serializers.ValidationError(ve.args[0])
         return renkan
     
     def validate_workspace_id(self, value):
@@ -99,8 +86,7 @@
             raise serializers.ValidationError("You cannot update source_revision_guid")
         return value
     
-    def validate_content(self, value):
-        
+    def validate_content(self, value):  
         try:
             json.loads(value)
         except ValueError:
@@ -119,27 +105,27 @@
 
 class RevisionSerializer(serializers.Serializer):
     id = serializers.ReadOnlyField(source="revision_guid")
-    parent_renkan_id = serializers.ReadOnlyField(source="parent_renkan_guid")
+    parent_renkan_id = serializers.SlugRelatedField(source="parent_renkan", slug_field='renkan_guid', read_only=True)
     workspace_id = serializers.SerializerMethodField("get_related_workspace_guid")
     title = serializers.ReadOnlyField()
     content = serializers.JSONField(read_only=True)
     renkan_created_by = serializers.SerializerMethodField("get_related_renkan_creator")
     renkan_creation_date = serializers.SerializerMethodField("get_related_renkan_creation_date")
     revision_created_by = serializers.SlugRelatedField(source="creator", slug_field=RENKAN_USER_DISPLAY_FIELD, read_only=True)
-    revision_last_updated_by = serializers.StringRelatedField(source="last_updated_by")
+    revision_last_updated_by = serializers.SlugRelatedField(source="last_updated_by", slug_field=RENKAN_USER_DISPLAY_FIELD, read_only=True)
     revision_modification_date = serializers.ReadOnlyField(source="modification_date")
     
     def get_related_workspace_guid(self, revision):
-        parent_renkan = Renkan.objects.get(renkan_guid = revision.parent_renkan_guid)
-        return parent_renkan.workspace_guid
+        if revision.parent_renkan.workspace:
+            return revision.parent_renkan.workspace.workspace_guid
+        else:
+            return ''
     
     def get_related_renkan_creator(self, revision):
-        parent_renkan = Renkan.objects.get(renkan_guid = revision.parent_renkan_guid)
-        return getattr(parent_renkan.creator, RENKAN_USER_DISPLAY_FIELD)
+        return getattr(revision.parent_renkan.creator, RENKAN_USER_DISPLAY_FIELD)
     
     def get_related_renkan_creation_date(self, revision):
-        parent_renkan = Renkan.objects.get(renkan_guid = revision.parent_renkan_guid)
-        return parent_renkan.creation_date
+        return revision.parent_renkan.creation_date
     
 
 class WorkspaceSerializer(serializers.Serializer):
--- a/server/python/django2/renkanmanager/tests/v1_0/tests_renkan.py	Wed Apr 27 16:36:30 2016 +0200
+++ b/server/python/django2/renkanmanager/tests/v1_0/tests_renkan.py	Tue May 03 14:32:28 2016 +0200
@@ -25,44 +25,47 @@
         post_response = self.client.post(post_url, data, format="json")
         self.test_workspace_guid = json.loads(post_response.content.decode()).get("id")
         self.first_test_title = "test_title_1"
-        self.first_test_content = json.dumps({
+        self.first_test_content_dict = {
             "id": "",
             "title": "test_title_1",
             "description": "test_description_1",
-            "created": "",
-            "updated": "",
+            "created": "2016-03-11 15:10:10.645193+00:00",
+            "updated": "2016-03-11 15:10:10.645193+00:00",
             "edges": [],
             "nodes": [],
             "users": [],
             "space_id": "",
             "views": []
-        })
-        self.second_test_title = "test_title_1"
-        self.second_test_content = json.dumps({
+        }
+        self.first_test_content = json.dumps(self.first_test_content_dict)
+        self.second_test_title = "test_title_2"
+        self.second_test_content_dict = {
             "id": "",
             "title": "test_title_2",
             "description": "test_description_2",
-            "created": "",
-            "updated": "",
+            "created": "2016-03-11 15:10:10.645193+00:00",
+            "updated": "2016-03-12 15:10:10.645193+00:00",
             "edges": [],
             "nodes": [],
             "users": [],
             "space_id": "",
             "views": []
-        })
-        self.third_test_title = "test_title_1"
-        self.third_test_content = json.dumps({
+        }
+        self.second_test_content = json.dumps(self.second_test_content_dict)
+        self.third_test_title = "test_title_3"
+        self.third_test_content_dict = {
             "id": "",
             "title": "test_title_3",
             "description": "test_description_3",
-            "created": "",
-            "updated": "",
+            "created": "2016-03-11 15:10:10.645193+00:00",
+            "updated": "2016-03-13 15:10:10.645193+00:00",
             "edges": [],
             "nodes": [],
             "users": [],
             "space_id": "",
             "views": []
-        })
+        }
+        self.third_test_content = json.dumps(self.third_test_content_dict)
         
     def test_create_renkan(self):
         
@@ -80,6 +83,7 @@
         
         # Checking POSTed Renkan data
         post_response_dict = json.loads(post_response.content.decode())
+        post_response_content_dict = json.loads(post_response_dict.get("content", "{}"))
         new_renkan_guid = post_response_dict.get("id", "")
         new_renkan = Renkan.objects.get(renkan_guid=new_renkan_guid)
         # GUIDs and username
@@ -88,7 +92,11 @@
         self.assertEqual(getattr(self.user, User.USERNAME_FIELD), getattr(new_renkan.creator, User.USERNAME_FIELD))
         # Content and title extracted from revision
         self.assertEqual(new_renkan.title, self.first_test_title)
-        self.assertEqual(new_renkan.content, self.first_test_content)
+        new_renkan_content_dict = json.loads(new_renkan.content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(new_renkan_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key != "id":
+                self.assertEqual(new_renkan_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
+        
         # Revision count
         self.assertEqual(new_renkan.revision_count, 1)
         self.assertEqual(post_response_dict.get("revision_count", ""), 1)
@@ -102,10 +110,16 @@
         # Title and content
         #    in the response
         self.assertEqual(post_response_dict.get("title", ""), self.first_test_title)
-        self.assertEqual(post_response_dict.get("content", ""), self.first_test_content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(post_response_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key != "id":
+                self.assertEqual(post_response_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
+        
         #    in the database
         self.assertEqual(new_renkan_revision.title, self.first_test_title)
-        self.assertEqual(new_renkan_revision.content, self.first_test_content)
+        new_revision_content_dict = json.loads(new_renkan_revision.content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(new_revision_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key != "id":
+                self.assertEqual(new_revision_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         
         # Checking permission
         self.assertTrue(self.user.has_perm("view_renkan", new_renkan))
@@ -128,13 +142,17 @@
         new_renkan = Renkan.objects.get(renkan_guid=new_renkan_guid)
         # GUIDs and username
         self.assertEqual(self.test_workspace_guid, post_response_dict.get("workspace_id", ""))
-        self.assertEqual(self.test_workspace_guid, new_renkan.workspace_guid)
+        self.assertEqual(self.test_workspace_guid, new_renkan.workspace.workspace_guid)
         self.assertEqual(getattr(self.user, User.USERNAME_FIELD), post_response_dict.get("created_by", ""))
         self.assertEqual(getattr(self.user, User.USERNAME_FIELD), post_response_dict.get("last_updated_by", ""))
         self.assertEqual(getattr(self.user, User.USERNAME_FIELD), getattr(new_renkan.creator, User.USERNAME_FIELD))
         # Content and title extracted from revision
         self.assertEqual(new_renkan.title, self.second_test_title)
-        self.assertEqual(new_renkan.content, self.second_test_content)
+        new_renkan_content_dict = json.loads(new_renkan.content)
+        for key in list(self.second_test_content_dict.keys()) + list(set(new_renkan_content_dict.keys()) - set(self.second_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key != "id" and key != "space_id":
+                self.assertEqual(new_renkan_content_dict.get(key, ""), self.second_test_content_dict.get(key, ""))
+        
         # Revision count
         self.assertEqual(new_renkan.revision_count, 1)
         self.assertEqual(post_response_dict.get("revision_count", ""), 1)
@@ -161,6 +179,16 @@
         self.assertEqual(post_response.status_code, status.HTTP_404_NOT_FOUND)
         
         ###################################################
+        # POSTing with non-JSON serializable content
+        ###################################################
+        
+        post_url = reverse("v1.0:renkan_list")
+        data = {"title": self.third_test_title, "content": "notJson(Serializable}"}
+        
+        post_response = self.client.post(post_url, data, format="json")
+        self.assertEqual(post_response.status_code, status.HTTP_400_BAD_REQUEST)
+        
+        ###################################################
         # try POSTing with unauthorized user 
         ###################################################
         
@@ -259,6 +287,9 @@
         self.assertTrue(isinstance(get_response_content, list))
         self.assertEqual(len(get_response_content), 1)
         
+        
+        
+        
     
     def test_update_renkan(self):
 
@@ -270,50 +301,66 @@
         data = {}
         post_response = self.client.post(post_url, data, format="json")
         post_response_dict = json.loads(post_response.content.decode())
+        post_response_ts = json.loads(post_response_dict.get("content"), "{}").get("updated", "")
         renkan_guid = post_response_dict.get("id", "")
         revision_guid = post_response_dict.get("current_revision_id", "")
-
+        
         ###################################################
         # PUTting by updating current revision
         ###################################################
         
         put_url = reverse("v1.0:renkan_detail", kwargs={"renkan_guid": renkan_guid})
+        put_content_dict = json.loads(self.first_test_content)
+        put_content_dict["updated"] = post_response_ts
         put_data = {
             "title" : self.first_test_title,
-            "content" : self.first_test_content,
+            "content" : json.dumps(put_content_dict),
             "create_new_revision": False
         }
         put_response = self.client.put(put_url, put_data, format="json")
         self.assertEqual(put_response.status_code, status.HTTP_200_OK)
         put_response_dict = json.loads(put_response.content.decode())
+        put_response_content_dict = json.loads(put_response_dict.get("content", "{}"))
+        put_response_ts = put_response_content_dict.get("updated", "")
+        
         # checking we"re still on the same revision as the initial one
         updated_project = Renkan.objects.get(renkan_guid=renkan_guid)
         self.assertEqual(revision_guid, put_response_dict.get("current_revision_id", ""))
         self.assertEqual(put_response_dict.get("revision_count", ""), 1)
         self.assertEqual(updated_project.revision_count, 1)
         
-        self.assertEqual(revision_guid, updated_project.current_revision_guid)
+        self.assertEqual(revision_guid, updated_project.current_revision.revision_guid)
         # checking data was updated
         #     in the reponse
         self.assertEqual(put_response_dict.get("title", ""), self.first_test_title)
-        self.assertEqual(put_response_dict.get("content", ""), self.first_test_content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(put_response_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key!= "id" and key != "space_id":
+                self.assertEqual(put_response_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
+                
         #     in the database
         updated_revision = Revision.objects.get(revision_guid=revision_guid)
+        updated_revision_content_dict = json.loads(updated_revision.content)
         self.assertEqual(updated_revision.title, self.first_test_title)
-        self.assertEqual(updated_revision.content, self.first_test_content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(updated_revision_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key!= "id" and key != "space_id":
+                self.assertEqual(updated_revision_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         
         ###################################################
         # PUTting by creating a new revision
         ###################################################
         
+        put_content_dict = json.loads(self.second_test_content)
+        put_content_dict["updated"] = put_response_ts
         put_data = {
             "title" : self.second_test_title,
-            "content" : self.second_test_content,
+            "content" : json.dumps(put_content_dict),
             "create_new_revision": True
         }
         put_response = self.client.put(put_url, put_data, format="json")
-        self.assertEqual(put_response.status_code, status.HTTP_200_OK)  
+        self.assertEqual(put_response.status_code, status.HTTP_200_OK)
         put_response_dict = json.loads(put_response.content.decode())
+        put_response_content_dict = json.loads(put_response_dict.get("content", "{}"))
+        put_response_ts = put_response_content_dict.get("updated", "")
         
         # checking we created a new revision
         updated_project = Renkan.objects.get(renkan_guid=renkan_guid)
@@ -325,15 +372,20 @@
         self.assertEqual(updated_project.revision_count, 2)
         
         # checking project now points towards new revision
-        self.assertEqual(updated_project.current_revision_guid, created_revision_guid)
+        self.assertEqual(updated_project.current_revision.revision_guid, created_revision_guid)
         # checking data was updated
         #     in the reponse
         self.assertEqual(put_response_dict.get("title", ""), self.second_test_title)
-        self.assertEqual(put_response_dict.get("content", ""), self.second_test_content)
+        for key in list(self.second_test_content_dict.keys()) + list(set(put_response_content_dict.keys()) - set(self.second_test_content_dict.keys())):
+            if key != "updated" and key!= "id" and key != "space_id":
+                self.assertEqual(put_response_content_dict.get(key, ""), self.second_test_content_dict.get(key, ""))
         #     in the database
         updated_revision = Revision.objects.get(revision_guid=created_revision_guid)
+        updated_revision_content_dict = json.loads(updated_revision.content)
         self.assertEqual(updated_revision.title, self.second_test_title)
-        self.assertEqual(updated_revision.content, self.second_test_content)
+        for key in list(self.second_test_content_dict.keys()) + list(set(updated_revision_content_dict.keys()) - set(self.second_test_content_dict.keys())):
+            if key != "updated" and key!= "id" and key != "space_id":
+                self.assertEqual(updated_revision_content_dict.get(key, ""), self.second_test_content_dict.get(key, ""))
         
         ###################################################
         # try to update source_revision_guid or workspace_guid
@@ -347,14 +399,6 @@
         put_response = self.client.put(put_url, put_data, format="json")
         self.assertEqual(put_response.status_code, status.HTTP_400_BAD_REQUEST)
         
-        put_data = {
-            "title" : self.third_test_title,
-            "content" : self.third_test_content,
-            "source_revision_id" : "bleh-revision-guid" # should fail without even checking the id
-        }
-        put_response = self.client.put(put_url, put_data, format="json")
-        self.assertEqual(put_response.status_code, status.HTTP_400_BAD_REQUEST)
-        
         ###################################################
         # PUTting with wrong guid
         ###################################################
@@ -398,6 +442,7 @@
         first_copy_url = post_url+"?source_renkan_id="+source_renkan_guid
         first_copy_response = self.client.post(first_copy_url, first_copy_data, format="json")
         first_copy_response_dict = json.loads(first_copy_response.content.decode())
+        first_copy_response_content_dict = json.loads(first_copy_response_dict.get("content", "{}"))
         self.assertEqual(first_copy_response.status_code, status.HTTP_201_CREATED)  
         self.assertEqual(Renkan.objects.count(), 2)
         # Checking data
@@ -405,16 +450,20 @@
         self.assertNotEqual(first_copy_response_dict.get("id"), source_renkan_guid)
         self.assertEqual(first_copy_response_dict.get("source_revision_id"), source_revision_guid)
         self.assertEqual(first_copy_response_dict.get("title", ""), "new_title_copy_1")
-        self.assertEqual(first_copy_response_dict.get("content", ""), self.first_test_content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(first_copy_response_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key !="title" and key!= "id" and key != "space_id":
+                self.assertEqual(first_copy_response_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         self.assertEqual(first_copy_response_dict.get("created_by", ""), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(first_copy_response_dict.get("last_updated_by", ""), getattr(self.user, User.USERNAME_FIELD))
         #     in the database
         first_copy = Renkan.objects.get(renkan_guid=first_copy_response_dict.get("id", ""))
         first_copy_revision = Revision.objects.get(revision_guid=first_copy_response_dict.get("current_revision_id", ""))
         self.assertEqual(first_copy.title, "new_title_copy_1")
-        self.assertEqual(first_copy.content, self.first_test_content)
         self.assertEqual(first_copy_revision.title, "new_title_copy_1")
-        self.assertEqual(first_copy_revision.content, self.first_test_content)
+        first_copy_revision_content_dict = json.loads(first_copy_revision.content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(first_copy_revision_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key!= "id" and key != "space_id":
+                self.assertEqual(first_copy_revision_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         self.assertEqual(getattr(first_copy.creator, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(getattr(first_copy_revision.creator, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(getattr(first_copy_revision.last_updated_by, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
@@ -427,6 +476,7 @@
         second_copy_url = post_url
         second_copy_response = self.client.post(second_copy_url, second_copy_data, format="json")
         second_copy_response_dict = json.loads(second_copy_response.content.decode())
+        second_copy__response_content_dict = json.loads(second_copy_response_dict.get("content", "{}"))
         self.assertEqual(second_copy_response.status_code, status.HTTP_201_CREATED)
         self.assertEqual(Renkan.objects.count(), 3)
         # Checking data
@@ -434,16 +484,20 @@
         self.assertNotEqual(second_copy_response_dict.get("id"), source_renkan_guid)
         self.assertEqual(second_copy_response_dict.get("source_revision_id"), source_revision_guid)
         self.assertEqual(second_copy_response_dict.get("title", ""), "new_title_copy_2")
-        self.assertEqual(second_copy_response_dict.get("content", ""), self.first_test_content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(second_copy__response_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key!= "id" and key != "space_id":
+                self.assertEqual(second_copy__response_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         self.assertEqual(second_copy_response_dict.get("created_by", ""), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(second_copy_response_dict.get("last_updated_by", ""), getattr(self.user, User.USERNAME_FIELD))
         #     in the database
         second_copy = Renkan.objects.get(renkan_guid=second_copy_response_dict.get("id", ""))
         second_copy_revision = Revision.objects.get(revision_guid=second_copy_response_dict.get("current_revision_id", ""))
         self.assertEqual(second_copy.title, "new_title_copy_2")
-        self.assertEqual(second_copy.content, self.first_test_content)
         self.assertEqual(second_copy_revision.title, "new_title_copy_2")
-        self.assertEqual(second_copy_revision.content, self.first_test_content)
+        second_copy_revision_content_dict = json.loads(second_copy_revision.content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(second_copy_revision_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key!= "id" and key != "space_id":
+                self.assertEqual(second_copy_revision_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         self.assertEqual(getattr(second_copy.creator, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(getattr(second_copy_revision.creator, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(getattr(second_copy_revision.last_updated_by, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
@@ -456,6 +510,7 @@
         third_copy_url = post_url+"?source_revision_id="+source_revision_guid
         third_copy_response = self.client.post(third_copy_url, third_copy_data, format="json")
         third_copy_response_dict = json.loads(third_copy_response.content.decode())
+        third_copy_response_content_dict = json.loads(third_copy_response_dict.get("content", "{}"))
         self.assertEqual(third_copy_response.status_code, status.HTTP_201_CREATED)  
         self.assertEqual(Renkan.objects.count(), 4)
         # Checking data
@@ -463,16 +518,20 @@
         self.assertNotEqual(third_copy_response_dict.get("id"), source_renkan_guid)
         self.assertEqual(third_copy_response_dict.get("source_revision_id"), source_revision_guid)
         self.assertEqual(third_copy_response_dict.get("title", ""), "new_title_copy_3")
-        self.assertEqual(third_copy_response_dict.get("content", ""), self.first_test_content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(third_copy_response_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key!= "id" and key != "space_id":
+                self.assertEqual(third_copy_response_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         self.assertEqual(third_copy_response_dict.get("created_by", ""), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(third_copy_response_dict.get("last_updated_by", ""), getattr(self.user, User.USERNAME_FIELD))
         #     in the database
         third_copy = Renkan.objects.get(renkan_guid=third_copy_response_dict.get("id", ""))
         third_copy_revision = Revision.objects.get(revision_guid=third_copy_response_dict.get("current_revision_id", ""))
+        third_copy_revision_content_dict = json.loads(third_copy_revision.content)
         self.assertEqual(third_copy.title, "new_title_copy_3")
-        self.assertEqual(third_copy.content, self.first_test_content)
         self.assertEqual(third_copy_revision.title, "new_title_copy_3")
-        self.assertEqual(third_copy_revision.content, self.first_test_content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(third_copy_revision_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key!= "id" and key != "space_id":
+                self.assertEqual(third_copy_revision_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         self.assertEqual(getattr(third_copy.creator, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(getattr(third_copy_revision.creator, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(getattr(third_copy_revision.last_updated_by, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
@@ -485,6 +544,7 @@
         fourth_copy_url = post_url
         fourth_copy_response = self.client.post(fourth_copy_url, fourth_copy_data, format="json")
         fourth_copy_response_dict = json.loads(fourth_copy_response.content.decode())
+        fourth_copy_response_content_dict = json.loads(fourth_copy_response_dict.get("content", "{}"))
         self.assertEqual(fourth_copy_response.status_code, status.HTTP_201_CREATED)
         self.assertEqual(Renkan.objects.count(), 5)
         # Checking data
@@ -492,16 +552,20 @@
         self.assertNotEqual(fourth_copy_response_dict.get("id"), source_renkan_guid)
         self.assertEqual(fourth_copy_response_dict.get("source_revision_id"), source_revision_guid)
         self.assertEqual(fourth_copy_response_dict.get("title", ""), self.first_test_title)
-        self.assertEqual(fourth_copy_response_dict.get("content", ""), self.first_test_content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(fourth_copy_response_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key!= "id" and key != "space_id":
+                self.assertEqual(fourth_copy_response_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         self.assertEqual(fourth_copy_response_dict.get("created_by", ""), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(fourth_copy_response_dict.get("last_updated_by", ""), getattr(self.user, User.USERNAME_FIELD))
         #     in the database
         fourth_copy = Renkan.objects.get(renkan_guid=fourth_copy_response_dict.get("id", ""))
         fourth_copy_revision = Revision.objects.get(revision_guid=fourth_copy_response_dict.get("current_revision_id", ""))
         self.assertEqual(fourth_copy.title, self.first_test_title)
-        self.assertEqual(fourth_copy.content, self.first_test_content)
         self.assertEqual(fourth_copy_revision.title, self.first_test_title)
-        self.assertEqual(fourth_copy_revision.content, self.first_test_content)
+        fourth_copy_revision_content_dict = json.loads(fourth_copy_revision.content)
+        for key in list(self.first_test_content_dict.keys()) + list(set(fourth_copy_revision_content_dict.keys()) - set(self.first_test_content_dict.keys())):
+            if key != "updated" and key != "created" and key!= "id" and key != "space_id":
+                self.assertEqual(fourth_copy_revision_content_dict.get(key, ""), self.first_test_content_dict.get(key, ""))
         self.assertEqual(getattr(fourth_copy.creator, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(getattr(fourth_copy_revision.creator, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(getattr(fourth_copy_revision.last_updated_by, User.USERNAME_FIELD), getattr(self.user, User.USERNAME_FIELD))
@@ -542,6 +606,7 @@
         post_response_dict = json.loads(post_response.content.decode())
         to_delete_renkan_guid = post_response_dict.get("id", "")
         to_delete_revision_guid = post_response_dict.get("current_revision_id", "")
+        to_delete_renkan_ts = json.loads(post_response_dict.get("content", "")).get("updated", "")
         
         ###################################################
         # POSTing copy
@@ -552,7 +617,7 @@
         copy_renkan_guid = post_response_dict.get("id", "")
         
         # Adding another revision
-        put_data = {"title": self.first_test_title+"_edited!", "create_new_revision": True}
+        put_data = {"title": self.first_test_title+"_edited!", "validation_timestamp": to_delete_renkan_ts, "create_new_revision": True}
         put_url = reverse("v1.0:renkan_detail", kwargs={"renkan_guid":to_delete_renkan_guid})
         put_response = self.client.put(put_url, put_data, format="json")
         self.assertEqual(Renkan.objects.count(), 2)
@@ -592,7 +657,7 @@
         # Check that remaining renkan doesn"t have reference to deleted renkan
         ###################################################
         copy_renkan = Renkan.objects.get(renkan_guid=copy_renkan_guid)
-        self.assertEqual(copy_renkan.source_revision_guid, "")
+        self.assertIsNone(copy_renkan.source_revision)
         
         ###################################################
         # Try to DELETE renkan with wrong guid
--- a/server/python/django2/renkanmanager/tests/v1_0/tests_revision.py	Wed Apr 27 16:36:30 2016 +0200
+++ b/server/python/django2/renkanmanager/tests/v1_0/tests_revision.py	Tue May 03 14:32:28 2016 +0200
@@ -24,21 +24,24 @@
         
         post_url = reverse("v1.0:renkan_list")
         self.test_title = "test_title_1"
-        self.test_content = json.dumps({
+        test_content_dict_init = {
             "id": "",
             "title": "test_title_1",
-            "description": "test_description_1",
-            "created": "",
-            "updated": "",
+            "description": "",
+            "created": "2016-03-11 15:10:10.645193+00:00",
+            "updated": "2016-03-11 15:10:10.645193+00:00",
             "edges": [],
             "nodes": [],
             "users": [],
             "space_id": "",
             "views": []
-        })
+        }
+        self.test_content = json.dumps(test_content_dict_init)
         self.test_data = {"title": self.test_title, "content": self.test_content}
         post_response = self.client.post(post_url, self.test_data, format="json")
         post_response_dict = json.loads(post_response.content.decode())
+        self.test_content_dict = json.loads(post_response_dict.get("content", "{}"))
+        self.post_response_content_dict = json.loads(post_response_dict.get("content", "{}"))
         self.test_renkan_guid = post_response_dict.get("id", "")
         self.test_initial_revision_guid = post_response_dict.get("current_revision_id", "")
     
@@ -59,7 +62,6 @@
         self.assertEqual(get_response_dict.get("revision_created_by", ""), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(get_response_dict.get("revision_last_updated_by", ""), getattr(self.user, User.USERNAME_FIELD))
         self.assertEqual(get_response_dict.get("title", ""), self.test_data.get("title", ""))
-        self.assertEqual(get_response_dict.get("content", ""), self.test_data.get("content", ""))
         
         ###################################################
         # GETting with wrong renkan guid
@@ -96,6 +98,7 @@
         put_title = "edited_title"
         put_data = {
             "title" : put_title,
+            "validation_timestamp": self.post_response_content_dict.get("updated", ""),
             "create_new_revision": True
         }
         put_response = self.client.put(put_url, put_data, format="json")
@@ -139,6 +142,7 @@
         put_title = "edited_title"
         put_data = {
             "title" : put_title,
+            "validation_timestamp": self.post_response_content_dict.get("updated", ""),
             "create_new_revision": True
         }
         put_response = self.client.put(put_url, put_data, format="json")