Update migration scripts to match the data model

migrations/versions/40_verify_codes.py

@@ -37,6 +37,6 @@ def downgrade():
     ### commands auto generated by Alembic - please adjust! ###
     op.create_unique_constraint('users_name_key', 'users', ['name'])
     op.drop_index(op.f('ix_verify_codes_user_id'), table_name='verify_codes')
-    op.drop_type('verify_code_types')
     op.drop_table('verify_codes')
+    op.execute('DROP TYPE verify_code_types')
     ### end Alembic commands ###

migrations/versions/50_alter_verify_code_type.py

@@ -0,0 +1,30 @@
+"""empty message
+
+Revision ID: 50_alter_verify_code_type
+Revises: 40_verify_codes
+Create Date: 2015-12-11 10:21:24.098275
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '50_alter_verify_code_type'
+down_revision = '40_verify_codes'
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+def upgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('verify_codes', 'code_type',
+               existing_type=postgresql.ENUM('email', 'sms', name='verify_code_types'),
+               nullable=False)
+    ### end Alembic commands ###
+
+
+def downgrade():
+    ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('verify_codes', 'code_type',
+               existing_type=postgresql.ENUM('email', 'sms', name='verify_code_types'),
+               nullable=True)
+    ### end Alembic commands ###