當使用載波上傳時導軌未經許可的參數文件

Question

我想使用載波上傳，但我面臨一個錯誤..當我選擇文件並點擊上傳仍然它說它不能爲空並在控制檯上它說未經許可的參數文件。
[upload_controller.rb]

class UploadsController < ApplicationController 
    before_action :authenticate_user! 

    def index 
    @uploads=Upload.all 
    end 

    def new 
    @upload=Upload.new 
    end 


    def create 

    @upload=Upload.new(params_abc) 

    if @upload.save 
     Upload.upload(params[:upload][:files]) 
     redirect_to @upload 
    else 
     render 'new' 
    end 

    end 

private 

    def params_abc 
     params.require(:upload).permit(:title,:description) 
    end 

end 

[upload.rb]

class Upload < ActiveRecord::Base 

    validates :description, presence: true 
    validates :title, presence: true 
    validates :tageline, presence: true 

    mount_uploader :upload, UploadUploader 

    def self.upload(files) 
     files.each do |file|  
     #@file_extension=file.content_type.split('/')[1]    

      doc = Upload.new(tageline: file) 
      #save is a method which will save the content in the database 
      doc.save! 
     end 
    end 

end 

[上傳/ new.html.erb]

<%= form_for @upload,html: { multipart: true } do |f| %> 
    <% if @upload.errors.any? %> 
     <div id="errors"> 
      <h2><%= pluralize(@upload.errors.count, "error") %> prevented this post from saving:</h2> 
      <ul> 
       <% @upload.errors.full_messages.each do |msg| %> 
        <li><%= msg %></li> 
       <% end %> 
      </ul> 
     </div> 
    <% end %> 

    <%= f.label :title %><br> 
    <%= f.text_field :title %><br> 
    <br> 

    <%= f.label :description %><br> 
    <%= f.text_field :description %><br> 

    <br> 



    <%= f.label :files %><br> 
    <%= f.file_field :files%><br> 
    <br> 

    <%= f.submit %> 
<% end %> 

[upload_migration]

class CreateUploads < ActiveRecord::Migration 
    def change 
    create_table :uploads do |t| 
     t.string :title, null: false 
     t.string :description, null: false 
     t.string :tageline, null: false 
     t.timestamps 
    end 
    end 
end 

[控制檯]

Started POST "/uploads" for 127.0.0.1 at 2016-02-08 14:18:54 +0530 
Processing by UploadsController#create as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"1YaRS4BPwg6W5RaKNs/BOCf24TezALQWuxEEhjz04nY=", "upload"=>{"title"=>"mjkhhjkkj", "description"=>"jhhjnh", "files"=>#<ActionDispatch::Http::UploadedFile:0x000000053ec6c8 @tempfile=#<Tempfile:/tmp/RackMultipart20160208-10624-40whhz>, @original_filename="Design Patterns in Ruby (2007).pdf", @content_type="application/pdf", @headers="Content-Disposition: form-data; name=\"upload[files]\"; filename=\"Design Patterns in Ruby (2007).pdf\"\r\nContent-Type: application/pdf\r\n">}, "commit"=>"Create Upload"} 
    User Load (0.3ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 4 ORDER BY `users`.`id` ASC LIMIT 1 
Unpermitted parameters: files 
    (0.1ms) BEGIN 
    (0.1ms) ROLLBACK 
    Rendered uploads/new.html.erb within layouts/application (2.7ms) 
Completed 200 OK in 86ms (Views: 82.3ms | ActiveRecord: 0.5ms) 

[tageline_uploader]

# encoding: utf-8 

class TagelineUploader < CarrierWave::Uploader::Base 

    # Include RMagick or MiniMagick support: 
    # include CarrierWave::RMagick 
    # include CarrierWave::MiniMagick 

    # Choose what kind of storage to use for this uploader: 
    storage :file 
    # storage :fog 

    # Override the directory where uploaded files will be stored. 
    # This is a sensible default for uploaders that are meant to be mounted: 
    def store_dir 
    "uploadss/post/#{model.id}" 
    end 

    # Provide a default URL as a default if there hasn't been a file uploaded: 
    # def default_url 
    # # For Rails 3.1+ asset pipeline compatibility: 
    # # ActionController::Base.helpers.asset_path("fallback/" + [version_name, "default.png"].compact.join('_')) 
    # 
    # "/images/fallback/" + [version_name, "default.png"].compact.join('_') 
    # end 

    # Process files as they are uploaded: 
    # process :scale => [200, 300] 
    # 
    # def scale(width, height) 
    # # do something 
    # end 

    # Create different versions of your uploaded files: 
    # version :thumb do 
    # process :resize_to_fit => [50, 50] 
    # end 

    # Add a white list of extensions which are allowed to be uploaded. 
    # For images you might use something like this: 
    # def extension_white_list 
    # %w(jpg jpeg gif png) 
    # end 

    # Override the filename of the uploaded files: 
    # Avoid using model.id or version_name here, see uploader/store.rb for details. 
    # def filename 
    # "something.jpg" if original_filename 
    # end 

end 

Answer 1

您應該將參數:tageline添加到您的params_abc方法中。

def params_abc 
    params.require(:upload).permit(:tageline, :title, :description) 
end 

還需要添加:tageline作爲上傳字段，因爲您在數據庫中沒有:upload場。

mount_uploader :tageline, UploadUploader 

沒有必要在你的模型Uploadupload方法，並創建每個每個文件新Upload對象，只是將其刪除。

你也應該從控制器刪除此行：

Upload.upload(params[:upload][:files]) 

並且在視圖改變

<%= f.label :tageline %><br> 
<%= f.file_field :tageline %><br>