为什么我的文本框以表格形式显示ActiveRecord_Associations_CollectionProxy [英] Why my textbox shows ActiveRecord_Associations_CollectionProxy in form

问题描述

我正在构建Rails应用程序，并使用 form_for 呈现表单。一切工作正常，除了一个文本字段在文本内部具有 ActiveRecord_Associations_CollectionProxy 之外，我不确定它来自哪里。

I'm building rails application and I use form_for to render the form. Everything works fine works fine except one text field has ActiveRecord_Associations_CollectionProxy inside the text which I'm not sure where it's coming from.

这是我的表单

<%= form_for(@video, html: { class: "directUpload" }, multipart: true) do |f| %>
  <% if @video.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@video.errors.count, "error") %> prohibited this user from being saved:</h2>

      <ul>
      <% @video.errors.full_messages.each do |message| %>
        <li><%= message %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <div class="field">
    <%= f.label :title %><br>
    <%= f.text_field :title %>
  </div>
  <div class="field">
    <%= f.label :path %><br>
    <%= f.file_field :path%>
  </div>
  <div class="field">
    <%= f.label :tags %><br>
    <%= f.text_field :tags %>
  </div>
  <div class="actions">
    <%= f.submit %>
  </div>
<% end %>

这是我的视频模型

class Video < ActiveRecord::Base
  belongs_to :user

  has_many :video_tags
  has_many :tags, through: :video_tags
end

这是屏幕截图

推荐答案

您要在表单中显示多个标签。您的控制器可以为表单提供所有标签，您可以在其中使用 http://apidock.com来显示它们/ rails / ActionView / Helpers / FormOptionsHelper / options_from_collection_for_select 。

You have multiple tags that you want show in form. Your controller could serve all tags for form where you could show them with http://apidock.com/rails/ActionView/Helpers/FormOptionsHelper/options_from_collection_for_select for example.

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