scinote-web/db/migrate/20151215103642_add_foreign_keys_to_tables.rb

class AddForeignKeysToTables < ActiveRecord::Migration[4.2]
  def change
    %i(
      assets checklists checklist_items my_module_groups
      my_module_tags my_modules teams projects
      sample_groups sample_types tables tags
    ).each do |table_name|
      add_foreign_key table_name, :users, column: :created_by_id
    end

    %i(
      assets checklists checklist_items comments
      custom_fields my_modules teams projects
      reports results sample_groups sample_types samples
      steps tables tags
    ).each do |table_name|
      add_foreign_key table_name, :users, column: :last_modified_by_id
    end

    %i(my_modules projects results).each do |table_name|
      add_foreign_key table_name, :users, column: :archived_by_id
      add_foreign_key table_name, :users, column: :restored_by_id
    end

    %i(user_my_modules user_teams user_projects).each do |table_name|
      add_foreign_key table_name, :users, column: :assigned_by_id
    end
  end
end