require 'abstract_unit' require 'action_controller/metal/strong_parameters' class NestedParametersTest < ActiveSupport::TestCase test "permitted nested parameters" do params = ActionController::Parameters.new({ book: { title: "Romeo and Juliet", authors: [{ name: "William Shakespeare", born: "1564-04-26" }, { name: "Christopher Marlowe" }], details: { pages: 200, genre: "Tragedy" } }, magazine: "Mjallo!" }) permitted = params.permit book: [ :title, { authors: [ :name ] }, { details: :pages } ] assert permitted.permitted? assert_equal "Romeo and Juliet", permitted[:book][:title] assert_equal "William Shakespeare", permitted[:book][:authors][0][:name] assert_equal "Christopher Marlowe", permitted[:book][:authors][1][:name] assert_equal 200, permitted[:book][:details][:pages] assert_nil permitted[:book][:details][:genre] assert_nil permitted[:book][:authors][0][:born] assert_nil permitted[:magazine] end test "nested arrays with strings" do params = ActionController::Parameters.new({ :book => { :genres => ["Tragedy"] } }) permitted = params.permit :book => :genres assert_equal ["Tragedy"], permitted[:book][:genres] end test "permit may specify symbols or strings" do params = ActionController::Parameters.new({ :book => { :title => "Romeo and Juliet", :author => "William Shakespeare" }, :magazine => "Shakespeare Today" }) permitted = params.permit({:book => ["title", :author]}, "magazine") assert_equal "Romeo and Juliet", permitted[:book][:title] assert_equal "William Shakespeare", permitted[:book][:author] assert_equal "Shakespeare Today", permitted[:magazine] end test "nested array with strings that should be hashes" do params = ActionController::Parameters.new({ book: { genres: ["Tragedy"] } }) permitted = params.permit book: { genres: :type } assert_empty permitted[:book][:genres] end test "nested array with strings that should be hashes and additional values" do params = ActionController::Parameters.new({ book: { title: "Romeo and Juliet", genres: ["Tragedy"] } }) permitted = params.permit book: [ :title, { genres: :type } ] assert_equal "Romeo and Juliet", permitted[:book][:title] assert_empty permitted[:book][:genres] end test "nested string that should be a hash" do params = ActionController::Parameters.new({ book: { genre: "Tragedy" } }) permitted = params.permit book: { genre: :type } assert_nil permitted[:book][:genre] end test "fields_for-style nested params" do params = ActionController::Parameters.new({ book: { authors_attributes: { :'0' => { name: 'William Shakespeare', age_of_death: '52' }, :'-1' => { name: 'Unattributed Assistant' } } } }) permitted = params.permit book: { authors_attributes: [ :name ] } assert_not_nil permitted[:book][:authors_attributes]['0'] assert_not_nil permitted[:book][:authors_attributes]['-1'] assert_nil permitted[:book][:authors_attributes]['0'][:age_of_death] assert_equal 'William Shakespeare', permitted[:book][:authors_attributes]['0'][:name] assert_equal 'Unattributed Assistant', permitted[:book][:authors_attributes]['-1'][:name] end end