在Rails应用程序嵌套形式的错误 [英] Nested form error in Rails app

问题描述

有关这个问题的模式：用户，朋友，兴趣，person_interest。 Person_interest是polymoprhic并且可以存储或者属于一个用户或朋友的利益。

Models relevant to this question: user, friend, interest, person_interest. Person_interest is polymoprhic and can store interests that either belong to a user or a friend.

兴趣爱好是pre填充了约。 30的利益。当他们被要求用户注册，选择自己的利益，然后在较低的形式进入他们的朋友的名字选择该人的利益。

Interests is pre-populated with approx. 30 interests. When a user registers they are asked to select their own interests, then lower in the form enter in their friends names select the interests of that person.

试图与＆LT来实现这一点;％= friend_f.input：利益：为=＆GT; ：check_boxes，：标签=＆GT;假％＆GT;

但得到以下错误：

NoMethodError in User_steps#show

Showing /Users/nelsonkeating/Desktop/ReminDeal/app/views/user_steps/show.html.erb where line #30 raised:

undefined method `to_i' for []:ActiveRecord::Relation
Extracted source (around line #30):

27:         :end_year => Date.today.year - 12,
28:         :order => [:month, :day, :year ] %>
29:       <%= friend_f.input :gender, :collection => ['male','female'] %>
30:       <%= friend_f.input :interests, :as => :check_boxes, :label => false %>
31:     <%end%>
32:   
33: 
Rails.root: /Users/nelsonkeating/Desktop/ReminDeal

Application Trace | Framework Trace | Full Trace
app/views/user_steps/show.html.erb:30:in `block (2 levels) in _app_views_user_steps_show_html_erb__1202886937753978667_70281885932700'
app/views/user_steps/show.html.erb:23:in `block in _app_views_user_steps_show_html_erb__1202886937753978667_70281885932700'
app/views/user_steps/show.html.erb:1:in `_app_views_user_steps_show_html_erb__1202886937753978667_70281885932700'
Request

Parameters:

{"id"=>"show"}

和这里的形式。

<%= simple_form_for @user do |f| %>

  <%= f.input :name %>
  <%= f.input :city %>
  <%= f.input :address, :live => true  %>
  <%= f.input :zipcode %>
  <%= f.input :date_of_birth, :as => :date, :start_year => 1900,
    :end_year => Date.today.year - 12,
    :order => [ :day, :month, :year] %>
  <%= f.input :gender, :collection => [:male, :female] %>


    <h4>Select your top 3 interests..</h4>
      <%= f.association :interests, :as => :check_boxes, :label => false %>

    <h4>What holidays do you celebrate?</h4>
      <%= f.association :holidays, :as => :check_boxes, :label => false %> 



<h4>Add up to 10 friends birthdays that you would like to remember..</h4>
    <%= f.simple_fields_for :friends do |friend_f| %>

      <%= friend_f.input :name %>
      <%= friend_f.input :dob, :label => :Birthday, :as => :date, :start_year => Date.today.year - 90,
        :end_year => Date.today.year - 12,
        :order => [:month, :day, :year ] %>
      <%= friend_f.input :gender, :collection => ['male','female'] %>
      <%= friend_f.input :interests, :as => :check_boxes, :label => false %>
     <%end%>


 <%= f.button :submit, :class => 'btn btn-success' %>
      <%end%>

混帐回购协议是在这里： https://github.com/nelsonkeating/ReminDeal

推荐答案

你有什么理由，以避免 friend_f.association ？

Do you have any reasons to avoid friend_f.association ?

<%= friend_f.association :interests, :as => :check_boxes, :label => false %>

我的作品。 或更改：利益到：interest_ids 在卡斯帕的code，也应努力

Works for me. Or change :interests to :interest_ids in kasper's code, also should work.

<%= friend_f.input :interest_ids, :as => :check_boxes, :label => false, :collection => Interest.all %>

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