CODEWITHSUNDEEP
ruby-on-railsforms
EJIqpEP9
EJIqpEP9

Reputation: 69

Three level nested form in rails

I have 4 models Reports, Category, Question, Answer. My problem is that Report doesn't have associations with category. I want to create nested form like:

@report= Report.new
@category = @report.build_category
@quetions = @category.questions.build
@questions.answers.build

But without associations reports with categories i cannot do it. I have error like categories.report_id does not exist What I'm doing wrong?

My associations:

Category => has many => Questions

Questions => has many => Answers

My db schema:

Reports:
  user_id: integer
  category_id:integer

Category:
  title: string
  slug: string

Question:
  title: string
  category_id: integer

Answer:
  title: string
  question_id: integer

Upvotes: 0

Views: 851

Answers (1)

omarvelous
omarvelous

Reputation: 2784

I recommend using the NestedForm Gem (https://github.com/ryanb/nested_form)

gem 'nested_form'

You need to be doing something like the following in controller:

@report= Report.new
@report.build_category

Then in view:

<%= nested_form_for @report do |f| %>
  <%= f.fields_for :category do |category_form| %>
    <%= category_form.text_field :name %>
    <%= category_form.fields_for :questions do |question_form| %>
      <%= question_form.text_field :question %>
      <%= question_form.fields_for :answers do |answer_form| %>
        <%= answer_form.text_field :answer %>
      <% end %>
      <p><%= question_form.link_to_add "Add a Answer", :answers %></p>
    <% end %>
    <p><%= category_form.link_to_add "Add a Question", :questions %></p>
  <% end %>

Upvotes: 1

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