project_id must be not null.

hc/accounts/migrations/0022_auto_20190114_0857.py

@@ -0,0 +1,19 @@
+# Generated by Django 2.1.5 on 2019-01-14 08:57
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('accounts', '0021_auto_20190112_2005'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='member',
+            name='project',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='accounts.Project'),
+        ),
+    ]

hc/accounts/models.py

@@ -246,4 +246,4 @@ class Project(models.Model):
 class Member(models.Model):
     team = models.ForeignKey(Profile, models.CASCADE)
     user = models.ForeignKey(User, models.CASCADE, related_name="memberships")
-    project = models.ForeignKey(Project, models.CASCADE, null=True)
+    project = models.ForeignKey(Project, models.CASCADE)

hc/api/migrations/0056_auto_20190114_0857.py

@@ -0,0 +1,24 @@
+# Generated by Django 2.1.5 on 2019-01-14 08:57
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0055_auto_20190112_1427'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='channel',
+            name='project',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='accounts.Project'),
+        ),
+        migrations.AlterField(
+            model_name='check',
+            name='project',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to='accounts.Project'),
+        ),
+    ]

hc/api/models.py

@@ -68,7 +68,7 @@ class Check(models.Model):
     code = models.UUIDField(default=uuid.uuid4, editable=False, unique=True)
     desc = models.TextField(blank=True)
     user = models.ForeignKey(User, models.CASCADE)
-    project = models.ForeignKey(Project, models.CASCADE, null=True)
+    project = models.ForeignKey(Project, models.CASCADE)
     created = models.DateTimeField(auto_now_add=True)
     kind = models.CharField(max_length=10, default="simple",
                             choices=CHECK_KINDS)
@@ -264,7 +264,7 @@ class Channel(models.Model):
     name = models.CharField(max_length=100, blank=True)
     code = models.UUIDField(default=uuid.uuid4, editable=False, unique=True)
     user = models.ForeignKey(User, models.CASCADE)
-    project = models.ForeignKey(Project, models.CASCADE, null=True,)
+    project = models.ForeignKey(Project, models.CASCADE)
     created = models.DateTimeField(auto_now_add=True)
     kind = models.CharField(max_length=20, choices=CHANNEL_KINDS)
     value = models.TextField(blank=True)