Fix Link unique_together constraint

Author: yakser

core/migrations/0004_alter_link_unique_together.py

@@ -0,0 +1,18 @@
+# Generated by Django 4.2.3 on 2023-07-20 12:03
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("contenttypes", "0002_remove_content_type_name"),
+        ("core", "0003_link"),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name="link",
+            unique_together={("link", "content_type", "object_id")},
+        ),
+    ]

core/models.py

@@ -24,7 +24,11 @@ class Link(Model):
     content_object = GenericForeignKey("content_type", "object_id")
 
     class Meta:
-        unique_together = ("content_type", "object_id")
+        unique_together = (
+            "link",
+            "content_type",
+            "object_id",
+        )
         verbose_name = "Ссылка"
         verbose_name_plural = "Ссылки"
 
@@ -51,7 +55,11 @@ class Like(Model):
     content_object = GenericForeignKey("content_type", "object_id")
 
     class Meta:
-        unique_together = ("user", "content_type", "object_id")
+        unique_together = (
+            "user",
+            "content_type",
+            "object_id",
+        )
         verbose_name = "Лайк"
         verbose_name_plural = "Лайки"
 
@@ -81,7 +89,11 @@ class View(Model):
     content_object = GenericForeignKey("content_type", "object_id")
 
     class Meta:
-        unique_together = ("user", "content_type", "object_id")
+        unique_together = (
+            "user",
+            "content_type",
+            "object_id",
+        )
         verbose_name = "Просмотр"
         verbose_name_plural = "Просмотры"