将simple_forms simple_field_for与用于载波的分段文件上传器一起使用

Question

我正在创建一个博客，当我创建博客文章时，该博客允许我上传多个图像文件。我正在将Rails 4与简单形式的gem一起使用。我无法获取文件输入以允许选择多个文件，尽管上载单个文件也可以。

这是我的表格：

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

      <ul>
      <% @post.errors.full_messages.each do |message| %>
        <li, class: "white"><%= message %></li>
      <% end %>
      </ul>
    </div>
  <% end %>

  <%= f.input :title %>
  <%= f.input :subtitle %>
  <%= f.input :author %>
  <%= f.input :content, as: :text %>
  <%= f.input :publish, as: :select %>
  <%= f.association :tags, as: :check_boxes %>

  <div id="tabs">
    <ul>
      <li><a href="#tabs-1">Upload Images</a></li>
      <li><a href="#tabs-2">Link to Video</a></li>
      <li><a href="#tabs-3">Quote</a></li>
    </ul>
    <div id="tabs-1">
        <%= f.simple_fields_for :post_attachments do |p| %>
         <div class="field">
           <%= p.input :media, as: :file, :multiple => true, name: "post_attachments[media][]" %>
         </div>
       <% end %>
       <div class="actions"></br>
          <%= f.button :submit %>
       </div>
    </div>
    <div id="tabs-2">
      <div class="field">
        <%= f.label :video_link %><br>
        <%= f.text_field :video_link %>
      </div>
      <div class="actions"></br>
          <%= f.button :submit %>
      </div>
    </div>
    <div id="tabs-3">
      <div class="field">
        <%= f.label :quote_text %><br>
        <%= f.text_field :quote_text %>
      </div>
      <div class="field">
        <%= f.label :quote_author %><br>
        <%= f.text_field :quote_author %>
      </div>
      <div class="field">
        <%= f.label :quote_source %><br>
        <%= f.text_field :quote_source %>
      </div>
      <div class="actions"></br>
          <%= f.button :submit %>
      </div>
    </div>
  </div>

<script>
  $(function() {
    $("#tabs").tabs();
  });
</script>
<% end %>

我怀疑“ multipart”属性输入不正确。除了simple_form wiki上的该语句外，我似乎找不到其他文档。

“包装器在默认的Rails表单内使用简单表单。它的工作方式与fields_for Rails帮助器相同，但是将生成器更改为使用SimpleForm :: FormBuilder。

我不知道在这里专门做什么。我希望能对此问题提供一些指导。

更新：这是我的控制器代码

posts_controller.rb

class PostsController < ApplicationController
  before_action :set_post, only: [:show, :edit, :update, :destroy]
  before_action :authenticate_user!, only: [:index, :edit, :update, :destroy]
  layout :resolve_layout

  respond_to :html

  def index
    @posts = Post.all
    respond_with(@posts)
  end

  def list
    @posts = Post.all
    respond_with(@posts)
  end

  def show
    @post_attachments = @post.post_attachments.all
    respond_with(@post)
  end

  def new
    @post = Post.new
    @post_attachment = @post.post_attachments.build
    respond_with(@post)
  end

  def edit
  end

  def create
    @post = Post.new(post_params)

    respond_to do |format|
      if @post.save
        if (@post_attachments != nil)
          params[:post_attachments]['media'].each do |a|
            @post_attachment = @post.post_attachments.create!(:media => a, :post_id => @post.id)
          end
        end

        format.html { redirect_to @post, notice: 'Post was successfully created.'}
      else
        format.html { render action: 'new' }
      end
    end
    # @post.save
    # respond_with(@post)
  end

  def update
    @post.update(post_params)
    respond_with(@post)
  end

  def destroy
    @post.destroy
    respond_with(@post)
  end

  private
    def set_post
      @post = Post.find(params[:id])
    end

    def post_params
      params.require(:post).permit(:title, :subtitle, :author, :content, :publish, :quote_author, :quote_text, :quote_source, :video_link, post_attachments_attributes: [:id, :post_id, :media])
    end

    def resolve_layout
      case action_name
      when "edit", "new", "create", "index"
        "full_width"
      when "show", "list"
        "blog_rt"
      else
        "base"
    end
  end
end
posts_attachments_controller.rb

  class PostAttachmentsController < ApplicationController
  before_action :set_post_attachment, only: [:show, :edit, :update, :destroy]

  respond_to :html

  def index
    @post_attachments = PostAttachment.all
    respond_with(@post_attachments)
  end

  def show
    respond_with(@post_attachment)
  end

  def new
    @post_attachment = PostAttachment.new
    respond_with(@post_attachment)
  end

  def edit
  end

  def create
    @post_attachment = PostAttachment.new(post_attachment_params)
    @post_attachment.save
    respond_with(@post_attachment)
  end

  def update
    @post_attachment.update(post_attachment_params)
    respond_with(@post_attachment)
  end

  def destroy
    @post_attachment.destroy
    respond_with(@post_attachment)
  end

  private
    def set_post_attachment
      @post_attachment = PostAttachment.find(params[:id])
    end

    def post_attachment_params
      params.require(:post_attachment).permit(:post_id, :media)
    end
end
这是我的模特：

post.rb

class Post < ActiveRecord::Base
    has_many :post_attachments
    accepts_nested_attributes_for :post_attachments
end
post_attachment.rb

class PostAttachment < ActiveRecord::Base
    mount_uploader :media, MediaUploader
    belongs_to :post 
end

我正在创建一个博客，当我创建博客文章时，该博客允许我上传多个图像文件。我正在将Rails 4与简单形式的gem一起使用。我无法获取文件输入以允许选择...

Answer 1

Answer 2