Add room information to lesson.

biscuit/apps/chronos/migrations/0002_lesson_room.py

+# Generated by Django 2.2.3 on 2019-07-16 21:54
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cambro', '0001_initial'),
+        ('chronos', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='lesson',
+            name='room',
+            field=models.ForeignKey(null=True, on_delete=django.db.models.deletion.CASCADE, related_name='lessons', to='cambro.Room'),
+        ),
+    ]

biscuit/apps/chronos/models.py

@@ -46,6 +46,8 @@ class Lesson(models.Model):
     teachers = models.ManyToManyField('core.Person', related_name='lessons')
     periods = models.ManyToManyField('TimePeriod', related_name='lessons')
     groups = models.ManyToManyField('core.Group', related_name='lessons')
+    room = models.ForeignKey(
+        'cambro.Room', related_name='lessons', on_delete=models.CASCADE, null=True)
 
     date_start = models.DateField(verbose_name=_(
         'Effective start date of lesson'), null=True)