Question

我有一个Class House，它有很多house_photos。我创建了大量照片（@mainentrance），用户可以使用house.photo选择radio button。为此，我有一个带form_tag的嵌套表单。我试着关注这篇文章（Using a Form_for with an each loop），但它没有用，因为我有一个嵌套的表单。

以下是代码：

<%= form_tag new_house_path do |f| %>

<div class="col-md-3 detailsnew">

  <div class="field">
    <%= text_field :title, :autofocus => true, class: 'form-control' %>
  </div>

</div>

<div class="col-md-12">

  <h3> Main Entrance </h3>

  <%= fields_for :house_photos, @houses.house_photos do |house_photo| %> <!-- nested  form-->

    <%= house_photo.hidden_field :title, :value => "Main Entrance" %><br /> <!-- title house_photo -->

    <% @mainentrance.each do |photo| %> <!-- render all image users can select -->

       <a class="fancybox-thumb" rel="fancybox-thumb" href="<%= photo.attachment %>"><img src="<%=  photo.attachment %>" alt="" style ="margin: auto; display: inline-block; padding: 5px 0px; height: 200px; width: 300px;"/></a>

       <%= fields_for "house_photo[#{photo.id}]", photo do |p| %>

         <%= house_photo.radio_button 'attachment', class: 'form-control', :value => p.attachement %> <!-- radio_button for each photo -->

       <% end %>

    <% end %>

<div class="col-md-12 actions" >
  <%= f.submit "Submit house", :class => "btn btn-small btn-primary", :style => "color:#ffffff" %>
</div>
<% end %>

基本上，我正在尝试将@mainentrance的值附件用于house_photo。使用此代码，我收到错误Undifined method 'attachment' for #<ActiveRecord::Associations::CollectionProxy::ActiveRecord_Associations...>

Answer 1

我使用form_for修复了问题。这篇文章非常有用Rails form with multiple nested models causes issues with radio groups

这是一个很好的代码：

  <%= form_for(@houses) do |f| %>  
    <div class="col-md-3 detailsnew">

      <div class="field">
        <%= f.label :title %><br>
        <%= f.text_field :title, :autofocus => true, class: 'form-control' %>
      </div>

    </div>

    <div class="col-md-12">

      <h3> Main Entrance </h3>

      <%= fields_for :house_photos, @houses.house_photos do |house_photo| %> <!-- nested  form-->

        <%= house_photo.hidden_field :title, :value => "Main Entrance" %><br /> <!-- title house_photo -->

        <% @mainentrance.each do |photo| %> <!-- render all image users can select -->

           <a class="fancybox-thumb" rel="fancybox-thumb" href="<%= photo.attachment %>"><img src="<%=  photo.attachment %>" alt="" style ="margin: auto; display: inline-block; padding: 5px 0px; height: 200px; width: 300px;"/></a>

           <!-- Solution -->

             <%= house_photo.radio_button(:imageurl, photo.attachment) %>

        <% end %>

    <div class="col-md-12 actions" >
      <%= f.submit "Submit house", :class => "btn btn-small btn-primary", :style => "color:#ffffff" %>
    </div>
    <% end %>

</div>

选择照片嵌套表单Rails

1 个答案: