Error loading when using carrier and adding

Question

I tried uploadify with carrierwave support multiple file upload , but it gives me this error GET http://localhost:3000/users/uploadify.swf?preventswfcaching=1361694618739 . Basically I have one model called user . For a single download, it works fine with a carrier, but for several files this is not the case.

I stuck to this tutorial. In users/_form.rb

 <p> <%= f.label "Upload Images"%> <%= f.file_field :image, :multiple => true %> </p> <script type= "text/javascript"> $(document).ready(function() { <% key = Rails.application.config.session_options[:key] %> var uploadify_script_data = {}; var csrf_param = $('meta[name=csrf-param]').attr('content'); var csrf_token = $('meta[name=csrf-token]').attr('content'); uploadify_script_data[csrf_param] = encodeURI(encodeURIComponent(csrf_token)); uploadify_script_data['<%= key %>'] = '<%= cookies[key] %>'; $('#user_image').uploadify({ uploader : '<%= asset_path("uploadify.swf")%>', script : '/images', cancelImg : '<%= asset_path("uploadify-cancel.png")%>', auto : true, multi : true, removeCompleted : true, scriptData : uploadify_script_data, onComplete : function(event, ID, fileObj, doc, data) { } }); }); </script> 

I use mongoid, so the model is like this

 class User include Mongoid::Document field :name, type: String field :description, type: String field :image, type: String mount_uploader :image, ImageUploader end 

I do not get what error is. Please help me.

Answer 1

Here's the complete solution for loading multiple images using Carrierwave: To do this, follow these steps.

 rails new multiple_image_upload_carrierwave 

In gem file

 gem 'carrierwave' 

Then run the following

 bundle install rails generate uploader Avatar 

Create post scaffold

 rails generate scaffold post title:string 

Create post_attachment scaffold

 rails generate scaffold post_attachment post_id:integer avatar:string 

Then run

 rake db:migrate 

In post.rb

 class Post < ActiveRecord::Base has_many :post_attachments accepts_nested_attributes_for :post_attachments end 

In post_attachment.rb

 class PostAttachment < ActiveRecord::Base mount_uploader :avatar, AvatarUploader belongs_to :post end 

In post_controller.rb

 def show @post_attachments = @post.post_attachments.all end def new @post = Post.new @post_attachment = @post.post_attachments.build end def create @post = Post.new(post_params) respond_to do |format| if @post.save params[:post_attachments]['avatar'].each do |a| @post_attachment = @post.post_attachments.create!(:avatar => a, :post_id => @post.id) end format.html { redirect_to @post, notice: 'Post was successfully created.' } else format.html { render action: 'new' } end end end private def post_params params.require(:post).permit(:title, post_attachments_attributes: [:id, :post_id, :avatar]) end 

In views / posts / _form.html.erb

 <%= form_for(@post, :html => { :multipart => true }) do |f| %> <div class="field"> <%= f.label :title %><br> <%= f.text_field :title %> </div> <%= f.fields_for :post_attachments do |p| %> <div class="field"> <%= p.label :avatar %><br> <%= p.file_field :avatar, :multiple => true, name: "post_attachments[avatar][]" %> </div> <% end %> <div class="actions"> <%= f.submit %> </div> <% end %> 

Change the attachment and attachment list for any message. In views / posts / show.html.erb

 <p id="notice"><%= notice %></p> <p> <strong>Title:</strong> <%= @post.title %> </p> <% @post_attachments.each do |p| %> <%= image_tag p.avatar_url %> <%= link_to "Edit Attachment", edit_post_attachment_path(p) %> <% end %> <%= link_to 'Edit', edit_post_path(@post) %> | <%= link_to 'Back', posts_path %> 

Update the form for editing attachments / post _attachments / _form.html.erb

 <%= image_tag @post_attachment.avatar %> <%= form_for(@post_attachment) do |f| %> <div class="field"> <%= f.label :avatar %><br> <%= f.file_field :avatar %> </div> <div class="actions"> <%= f.submit %> </div> <% end %> 

Change the update method in post_attachment_controller.rb

 def update respond_to do |format| if @post_attachment.update(post_attachment_params) format.html { redirect_to @post_attachment.post, notice: 'Post attachment was successfully updated.' } end end end 

In rails 3, there is no need to define strong parameters and how you can define the access_ attribute in both the model and accept_nested_attribute to publish the model because the available attribute is deprecated on rails 4.

To edit attachments, we cannot change all attachments at once. so we will replace the application one at a time or you can change according to your rule. Here I just show you how to update any attachment.