class CreateNewClassTables < ActiveRecord::Migration[5.2]
  def change
    unless table_exists?(:time_tables)
      create_table :time_tables do |t|
        t.string :name
        t.references :user_class
        t.boolean :is_use

        t.timestamps
      end
    end

    unless table_exists?(:new_class_tables)
      create_table :new_class_tables do |t|
        t.references :user_class
        t.boolean :is_use

        t.timestamps
      end
    end

  end
end