1 '''

     2 Created on Jul 17, 2014

     3 Reworked in December, 2015

     4 

     5 @author: tc, nd

     6 '''

     7 import uuid

     8 

     9 from django.conf import settings

    10 from django.db import models

    11 from django.http import Http404

    12 

    13 

    14 auth_user_model = getattr(settings, 'AUTH_USER_MODEL', 'auth.User')

    15 

    16 class Workspace(models.Model):

    17     

    18     workspace_guid = models.CharField(max_length=1024, default=uuid.uuid4, unique=True, blank=False, null=False) # typically UUID

    19     title = models.CharField(max_length=1024, null=True)

    20     creator = models.ForeignKey(auth_user_model, blank=True, null=True, related_name="workspace_creator")

    21     creation_date = models.DateTimeField(auto_now_add=True)

    22     

    23     @property

    24     def renkan_count(self):

    25         return Renkan.objects.filter(workspace_guid=self.workspace_guid).count()

    26     

    27     class Meta:

    28         app_label = 'renkanmanager'

    29         permissions = (

    30             ('view_workspace', 'Can view workspace'),

    31         )

    32 

    33 class Renkan(models.Model):

    34     

    35     renkan_guid = models.CharField(max_length=256, default=uuid.uuid4, unique=True, blank=False, null=False) # typically UUID

    36     workspace_guid = models.CharField(max_length=256, blank=True, null=True)

    37     current_revision_guid = models.CharField(max_length=256, blank=True, null=True)

    38     source_revision_guid = models.CharField(max_length=256, blank=True, null=True)

    39     creator = models.ForeignKey(auth_user_model, blank=True, null=True, related_name="renkan_creator")

    40     creation_date = models.DateTimeField(auto_now_add=True)

    41     state = models.IntegerField(default=1)

    42     

    43     @property

    44     def revision_count(self):

    45         return Revision.objects.filter(parent_renkan_guid=self.renkan_guid).count()

    46     

    47     @property

    48     def is_copy(self):

    49         return bool(self.source_revision_guid)

    50     

    51     # Current revision title

    52     @property

    53     def title(self):

    54         current_revision = Revision.objects.get(revision_guid = self.current_revision_guid)

    55         return current_revision.title

    56     

    57     # Current revision content

    58     @property

    59     def content(self):

    60         current_revision = Revision.objects.get(revision_guid = self.current_revision_guid)

    61         return current_revision.content

    62     

    63     class Meta:

    64         app_label = 'renkanmanager'

    65         permissions = (

    66             ('view_renkan', 'Can view renkan'),

    67         )

    68 

    69 class Revision(models.Model):

    70     

    71     revision_guid = models.CharField(max_length=256, default=uuid.uuid4, unique=True) # typically UUID

    72     parent_renkan_guid = models.CharField(max_length=256)

    73     title = models.CharField(max_length=1024, null=True, blank=True)

    74     content = models.TextField(blank=True, null=True)

    75     creator = models.ForeignKey(auth_user_model, blank=True, null=True, related_name="revision_creator")

    76     last_updated_by = models.ForeignKey(auth_user_model, blank=True, null=True, related_name="revision_last_updated_by")

    77     creation_date = models.DateTimeField(auto_now_add=True)

    78     modification_date = models.DateTimeField(auto_now=True)

    79     

    80     @property

    81     def is_current_revision(self):

    82         try:

    83             parent_project = Renkan.objects.get(renkan_guid=self.parent_renkan_guid)

    84         except Renkan.DoesNotExist: # SHOULD NOT HAPPEN!

    85             raise Http404

    86         return parent_project.current_revision_guid == self.revision_guid

    87     

    88     class Meta:

    89         app_label = 'renkanmanager'

    90         permissions = (

    91             ('view_revision', 'Can view revision'),

    92         )       

    93