jquery - Rails Devise ajax registration json error handling -

as newbie in rails, stumbled upon problem can't seem figure out how solve.

so i've been making ajax registration , works wanted, except 1 thing. when there errors in registration handle them so:

    error: function(xhr) {         var errors = jquery.parsejson(xhr.responsetext).errors;           (messages in errors) {             (message in errors[messages]) {                 popup(message + " " + errors[messages][message], 'error');               }           }     } 

the output example this: (this want change)

- email has been taken - date_of_birth can't blank 

if don't use ajax output becomes this: (this want get)

- email has been taken - date of birth can't blank 

my xhr.responsetext json data looks this:

{     "errors": {         "email": {             0: "has been taken"         },         "date_of_birth": {             0: "can't blank"         }     } } 

obviously i've been using key showing output, think of alternative.

my questions is: how make error output ajax show same result devise outputs them default?

update: overridden devise registrations controller:

class user::registrationscontroller < devise::registrationscontroller   respond_to :json    private    def sign_up_params     params.require(:user).permit(:email, :password, :gender, :looking, :date_of_birth)   end    def account_update_params     params.require(:user).permit(:username, :email, :password, :current_password, :gender, :looking, :date_of_birth, :description)   end  end