Update Image(Content) model

api/v1/serializers.py

@@ -149,6 +149,7 @@ class LessonSerializer(serializers.ModelSerializer):
 
 
 class ImageSerializer(serializers.ModelSerializer):
+    img = ImageObjectSerializer()
 
     class Meta:
         model = Image
@@ -158,13 +159,13 @@ class ImageSerializer(serializers.ModelSerializer):
             'lesson',
             'title',
             'position',
+            'img',
             'created_at',
             'update_at',
-        ) + ('img',)
+        )
 
         read_only_fields = (
             'id',
-            'img',
             'created_at',
             'update_at',
         )

apps/content/migrations/0007_auto_20180208_0626.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.0.2 on 2018-02-08 06:26
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('content', '0006_auto_20180208_0551'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='image',
+            name='img',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='content_images', to='content.ImageObject', verbose_name='Объект изображения'),
+        ),
+    ]

apps/content/models.py

@@ -46,7 +46,10 @@ class Content(PolymorphicModel):
 
 
 class Image(Content):
-    img = models.ImageField('Изображение', upload_to='content/images')
+    img = models.ForeignKey(
+        ImageObject, related_name='content_images',
+        verbose_name='Объект изображения', on_delete=models.CASCADE,
+    )
 
 
 class Text(Content):