Make stubbed column on broadcast_message non-nullable

But first set any null values there to False.

app/models.py

@@ -2281,7 +2281,7 @@ class BroadcastMessage(db.Model):
 
     reference = db.Column(db.String(255), nullable=True)
 
-    stubbed = db.Column(db.Boolean, nullable=True)
+    stubbed = db.Column(db.Boolean, nullable=False)
 
     CheckConstraint("created_by_id is not null or api_key_id is not null")
 

migrations/versions/0344_stubbed_not_nullable.py

@@ -0,0 +1,36 @@
+"""
+
+Revision ID: 0344_stubbed_not_nullable
+Revises: 0343_org_billing_details
+Create Date: 2021-02-08 18:10:15.533279
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = '0344_stubbed_not_nullable'
+down_revision = '0343_org_billing_details'
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.execute("UPDATE broadcast_message SET stubbed = False WHERE stubbed is null")
+    op.alter_column(
+        'broadcast_message',
+        'stubbed',
+        existing_type=sa.BOOLEAN(),
+        nullable=False
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column(
+        'broadcast_message',
+        'stubbed',
+        existing_type=sa.BOOLEAN(),
+        nullable=True
+    )
+    # ### end Alembic commands ###