Adapt media to ISBN

media/migrations/0012_media_external_url.py

@@ -0,0 +1,18 @@
+# Generated by Django 2.2.4 on 2019-08-11 07:05
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('media', '0011_auto_20190811_0903'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='media',
+            name='external_url',
+            field=models.URLField(blank=True, null=True, verbose_name='external URL'),
+        ),
+    ]