Rails deeply nested resources alternative to accessing params

Question

I have an event model and a Q+A model inside the event.

I'm new to rails so not sure if there is an alternate way to do this

Right now, inside an event show.html.erb, I have both a form to post a question, and each question will have a form to post an answer

The routes sit like this right now

  resources :events do
    resources :event_questions, only: [:create, :destroy]
  end

When you create a question inside my show.html.erb, it's being routed through EventQuestionsController and I access the event_id via params. Do I have to do it the same way with my event_answer?

And by that I mean, do I have to nest event_answers inside event_questions. I will need to know the event_id and the event_question_id.

If that's the only way to access the params. Would it look like this?

  resources :events do
    resources :event_questions, only: [:create, :destroy] do
       resources :event_answers, only: [:create, :destroy]
    end
  end

event_questions_controller.rb

def create
    @event_question = EventQuestion.new(event_question_params)
    if @event_question.save
        event = Event.find(params[:event_id])
        @event_question.event = event
        redirect_to event
    else
        redirect_to :back
    end
end

show.html.erb

<%= form_for(@event_question, :url => event_event_questions_path(@event)) do |f|  %>
# form stuff
<% end %>

I started changing my answer form to this

<%= @event.event_questions.each do |q| %>
    <%= q.question %>
    <%= q.fields_for :answers do |a| %>
        <%= a.label :answer %>
        <%= a.text_field :answer %>
        <%= a.submit "Answer" %>
    <% end %>
<% end %>

Answer 1

With some help I derived this answer from a bit of kobaltz answer and some other help.

The alternate method would be putting the information in hidden fields and passing it to the controller

   <%= @event.event_questions.each do |q| %>
        <%= q.question %><br>
        <% q.event_answers.each do |a| %>
            <%= a.answer %>
        <% end %>
        <%= form_for(EventAnswer.new) do |f| %>
            <%= hidden_field_tag :event_question_id, q.id %>
            <%= hidden_field_tag :event_id, @event.id %>
            <%= f.label :answer %>
            <%= f.text_field :answer %>
            <%= f.submit "Answer" %>
        <% end %>
    <% end %>