Add abstract model with creation and update date in wish models

gwift/wish/models.py

@@ -2,12 +2,17 @@ from django.db import models
 
 import uuid
 
-class Wishlist(models.Model):
+class AbstractModel(models.Model):
+    class Meta:
+        abstract = True
+
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+class Wishlist(AbstractModel):
 
     name = models.CharField(max_length=255)
     description = models.TextField()
-    created_at = models.DateTimeField(auto_now_add=True)
-    updated_at = models.DateTimeField(auto_now=True)
     external_id = models.UUIDField(unique=True, default=uuid.uuid4, editable=False)
 
     @staticmethod
@@ -18,13 +23,11 @@ class Wishlist(models.Model):
         w.save()
         return w
 
-class Item(models.Model):
+class Item(AbstractModel):
 
     wishlist = models.ForeignKey(Wishlist, related_name='items')
     name = models.CharField(max_length=255)
     description = models.TextField()
-    created_at = models.DateTimeField(auto_now_add=True)
-    updated_at = models.DateTimeField(auto_now=True)
     picture = models.ImageField(null=True)
     numbers_available = models.IntegerField(default=1)
     number_of_parts = models.IntegerField(null=True)
@@ -40,5 +43,5 @@ class Item(models.Model):
         i.save()
         return i
 
-class Part(models.Model):
+class Part(AbstractModel):
     pass