add User.disabled field

app/models.py

@@ -162,6 +162,9 @@ class User(db.Model, ModelMixin, UserMixin):
 
     activated = db.Column(db.Boolean, default=False, nullable=False)
 
+    # an account can be disabled if having harmful behavior
+    disabled = db.Column(db.Boolean, default=False, nullable=False, server_default="0")
+
     profile_picture_id = db.Column(db.ForeignKey(File.id), nullable=True)
 
     otp_secret = db.Column(db.String(16), nullable=True)

migrations/versions/2020_100412_1abfc9e14d7e_.py

@@ -0,0 +1,29 @@
+"""empty message
+
+Revision ID: 1abfc9e14d7e
+Revises: 58ad4df8583e
+Create Date: 2020-10-04 12:47:43.738037
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '1abfc9e14d7e'
+down_revision = '58ad4df8583e'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('users', sa.Column('disabled', sa.Boolean(), server_default='0', nullable=False))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('users', 'disabled')
+    # ### end Alembic commands ###