text: """empty message
  
  Revision ID: 28296e3a641
  Revises: 43bdec0aeb4
  Create Date: 2015-09-02 11:32:20.319641
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '28296e3a641'
  down_revision = '43bdec0aeb4'
  
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      ### commands auto generated by Alembic - please adjust! ###
      op.add_column('users', sa.Column('department_id', sa.Integer(), nullable=True))
      op.create_foreign_key(None, 'users', 'departments', ['department_id'], ['id'])
      ### end Alembic commands ###
  
  
  def downgrade():
      ### commands auto generated by Alembic - please adjust! ###
      op.drop_constraint(None, 'users', type_='foreignkey')
      op.drop_column('users', 'department_id')
      ### end Alembic commands ###
  