--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/server/src/metaeducation/signals.py	Tue Mar 01 17:39:09 2016 +0100
@@ -0,0 +1,61 @@
+from django.db.models.signals import post_save
+from django.dispatch import receiver
+from django.contrib.auth import get_user_model
+from django.conf import settings
+import requests, json
+
+@receiver(post_save)
+def reference_created_renkan(sender, instance, created, **kwargs):
+    from renkanmanager.models import Renkan
+    if created and sender == Renkan:
+        token_response = requests.post(
+            settings.MTDC_CLIENT_CREDENTIALS_TOKEN_URL+"?grant_type=client_credentials",
+            data = {},
+            headers = {
+                "Authorization": "Basic %s" % settings.MTDC_AUTH_CODE
+            }          
+        )
+        if token_response.status_code == 200:
+            token = json.loads(token_response.text)['access_token']
+            post_data = json.dumps({
+                "userId": instance.creator.id,
+                "title": instance.title
+            })
+            reference_response = requests.post(
+                settings.MTDC_REFERENCE_RESOURCE_BASE_URL+str(instance.renkan_guid),
+                data = post_data,
+                headers = {
+                    "Authorization": "Bearer %s" % token
+                }                             
+            )
+        
+@receiver(post_save)
+def reference_modified_title(sender, instance, created, **kwargs):
+    from renkanmanager.models import Renkan, Revision
+    if created and sender == Revision:
+        try:
+            referenced_renkan = Renkan.objects.get(renkan_guid = instance.revision_guid)
+        except Renkan.DoesNotExist:
+            return
+        if referenced_renkan.revision_count > 1:
+            # This means the revision isn't the first of the Renkan and therefore we shouldn't do anything
+            token_response = requests.post(
+                settings.MTDC_CLIENT_CREDENTIALS_TOKEN_URL+"?grant_type=client_credentials",
+                data = {},
+                headers = {
+                    "Authorization": "Basic %s" % settings.MTDC_AUTH_CODE
+                }                             
+            )
+            if token_response.status_code == 200:
+                token = json.loads(token_response.text)['access_token']
+                put_data = json.dumps({
+                    "userId": referenced_renkan.creator.id,
+                    "title": referenced_renkan.title
+                })
+                reference_response = requests.post(
+                    settings.MTDC_REFERENCE_RESOURCE_BASE_URL+str(instance.renkan_guid),
+                    data = put_data,
+                    headers = {
+                        "Authorization": "Bearer %s" % token
+                    }                             
+                )
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