Add cover to live lesson model

apps/school/migrations/0010_livelesson_cover.py

@@ -0,0 +1,20 @@
+# Generated by Django 2.0.3 on 2018-04-11 13:33
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('content', '0018_content_live_lesson'),
+        ('school', '0009_auto_20180410_1019'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='livelesson',
+            name='cover',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='livelesson_covers', to='content.ImageObject', verbose_name='Обложка урока школы'),
+        ),
+    ]

apps/school/models.py

@@ -3,6 +3,8 @@ from django.db import models
 from project.mixins import BaseModel, DeactivatedMixin
 
 from apps.content.models import ImageObject
+from apps.course.models import Comment
+
 
 class SchoolSchedule(models.Model):
     WEEKDAY_CHOICES = (
@@ -57,6 +59,11 @@ class LiveLesson(BaseModel, DeactivatedMixin):
     short_description = models.TextField('Краткое описание урока')
     stream = models.URLField('Ссылка на VIMEO', default='', blank=True)
     date = models.DateField(null=True, blank=True)
+    cover = models.ForeignKey(
+        ImageObject, related_name='livelesson_covers',
+        verbose_name='Обложка урока школы', on_delete=models.CASCADE,
+        null=True, blank=True,
+    )
 
     created_at = models.DateTimeField(auto_now_add=True)
     update_at = models.DateTimeField(auto_now=True)