Ndtyjky

I have a survey application that I confused on final side.
here is app models properties:

User



- Survey

    user_id



title

- Question

    title

    survey_id

    type: multiple_choice|check_boxes|short_answer

- Option

    title

    question_id



                   (Till here is okay. I can create surveys these includes more nested forms) Issue is after created surveys. (users responses) 



-Response

    user_id

    survey_id

-Answer

    question_id

    response_id

    option_id

Creating survey with nested attributes is okay. Problem is at Response side. how should be my response controller and response form on Survey show.html.erb?

There is response controller nested attributes below;

  def response_params

    params.require(:response).permit(:id, :user_id, :survey_id, answers_attributes:[:question_id, :response_id, :option_id ] )

  end

I should tell that survey can includes multiple questions these with only radio_buttons (independent radio buttons are other issue)

This issue made me so tired. I'll be glad if you can help me. Thanks.
For Source code: Click for source codes

updated files:

Response model:

class Response < ApplicationRecord

    belongs_to :user

  belongs_to :survey

  has_many :answers, dependent: :destroy

  validates :survey, presence: true

  counter_culture :option

  accepts_nested_attributes_for :answers

end

Survey_controller:

def new_response

@survey = Survey.find(params[:id])

@response = @survey.responses.build



    # now, the tricky part, you have to build the Answer objects so you can use the nested form later

    @survey.questions.each do |q|

      @response.answers.build question: q

    end

  end







def create_response

  @survey = Survey.find(params[:id])

  @response = @survey.build(response_params)

  @response.user = current_user

  @response.save

end

Routes:

Rails.application.routes.draw do



  devise_for :users

    resources :surveys do 

    member do

      get :new_response

      get :create_response 

    end

        end

  root 'surveys#index'



  end

form:

- # surveys/new_response.html.haml

- # You need to define a nested route inside survey resource to create the response

= form_for @response, url: create_response_survey_path(@survey) do |f|

  - # you can iterate over all the answers already initialized

  = f.fields_for :answers do |ff|

    - # get the question from the current answer to show the title and options and a hidden_field with the question id

    - q = ff.object.question



    = q.title

    = ff.hidden_field :question_id



    - # add the radios for each options for the question

    - q.options.each do |option|

      = label_tag do

        = ff.radio_button :option_id, option.id

        = option.title



  = f.submit 'Send'

I wouldn't use the Survey's show action to show the form to create a Response, I think it's better to approach it as a new_response action to make it cleaner and leave the show action just to show the actual survey (not to respond it). Something like:

class SurveysController < ApplicationController

  def new_response

    @survey = Survey.find(params[:id])

    @response = @survey.responses.build



    # now, the tricky part, you have to build the Answer objects so you can use the nested form later

    @survey.questions.each do |q|

      @response.anwers.build question: q

    end

  end

Now, you can have a form for the response:

- # surveys/new_response.html.haml

- # You need to define a nested route inside survey resource to create the response

= form_for @response, url: create_response_survey_path(@survey) do |f|

  - # you can iterate over all the answers already initialized

  = f.fields_for :answers do |ff|

    - # get the question from the current answer to show the title and options and a hidden_field with the question id

    - q = ff.object.question



    = q.title

    = ff.hidden_field :question_id



    - # add the radios for each options for the question

    - q.options.each do |option|

      = label_tag do

        = ff.radio_button :choice_id, option.id

        = option.title



  = f.submit 'Send'

Your response_params should be something like:

def response_params

  params.require(:response).permit(answers_attributes: [:question_id, :choice_id])

end

note that I removed the :survey_id and the :user_id, you don't want a user to hack your form, change a survey_id or user_id and add responses to another survey made by another user!

and your create_response action:

def create_response

  @survey = Survey.find(params[:id])

  @response = @survey.build(response_params)

  @response.user = current_user

  @response.save

end

Hope it makes sense.