Don't erase old publcations, so that the relations don't disappear.

[redakcja.git] / apps / api / models.py

diff --git a/apps/api/models.py b/apps/api/models.py
index 71a8362..ac69488 100644 (file)
--- a/apps/api/models.py
+++ b/apps/api/models.py
@@ -1,3 +1,33 @@
 from django.db import models
 
 # Create your models here.
 from django.db import models
 
 # Create your models here.

+class PartCache(models.Model):
+    document_id = models.CharField(max_length=255)
+    user_id = models.CharField(max_length=64, blank=True)    
+    part_id = models.CharField(max_length=255)
+
+    @classmethod
+    def update_cache(me, docid, userid, old, new):
+        old = set(old)
+        new = set(new)
+
+        related = me.objects.filter(user_id=userid, document_id=docid)
+
+        missing = old.difference(new)
+        related.filter(part_id__in=missing).delete()
+
+        created = new.difference(old)
+
+        for part in created:
+            me.objects.create(user_id=userid, document_id=docid, part_id=part)
+
+
+            
+        
+
+        
+
+            
+        
+        
+        
\ No newline at end of file