Fix gallery field of Course model

apps/course/migrations/0030_auto_20180212_0537.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.0.2 on 2018-02-12 05:37
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('course', '0029_auto_20180209_0911'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='course',
+            name='gallery',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='results_gallery', to='content.Gallery', verbose_name='Галерея работ'),
+        ),
+    ]

apps/course/models.py

@@ -72,6 +72,7 @@ class Course(models.Model):
     gallery = models.ForeignKey(
         Gallery, verbose_name='Галерея работ',
         on_delete=models.CASCADE, null=True, blank=True,
+        related_name='results_gallery',
     )
 
     created_at = models.DateTimeField(auto_now_add=True)