Gab-Social/db/migrate/20200908210103_add_foreign_key_to_group_for_group_category.rb

class AddForeignKeyToGroupForGroupCategory < ActiveRecord::Migration[5.2]
  def change
    add_column :groups, :group_category_id, :integer
    add_foreign_key :groups, :group_categories, on_delete: :nullify, validate: false
  end
end