Upate school class definion to not require a user when creating one

server/users/migrations/0008_auto_20190904_1410.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.0.6 on 2019-09-04 14:10
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('users', '0007_usersetting'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='schoolclass',
+            name='users',
+            field=models.ManyToManyField(blank=True, related_name='school_classes', to=settings.AUTH_USER_MODEL),
+        ),
+    ]

server/users/models.py

@@ -57,7 +57,7 @@ class User(AbstractUser):
 class SchoolClass(models.Model):
     name = models.CharField(max_length=100, blank=False, null=False, unique=True)
     is_deleted = models.BooleanField(blank=False, null=False, default=False)
-    users = models.ManyToManyField(get_user_model(), related_name='school_classes')
+    users = models.ManyToManyField(get_user_model(), related_name='school_classes', blank=True)
 
     def __str__(self):
         return 'SchoolClass {}-{}'.format(self.id, self.name)