ROR CarrierwaveはファイルとNULLをDBに保存しません

Question

Carrierwaveはアップロードされたファイルを指定されたディレクトリとデータベースに保存しません。新しいレコードを作成しましたが、その値はNULLです。私はファイルデータにバリデーションを入れようとしたとき、エラーメッセージは常に、ファイルを選択したにもかかわらず空のデータをフォームに入れていて、ファイル名がボタンの横に表示されていることを示しています。

コントローラ（用を検証なし：ファイル）

class SelfServe::EmployeeFilesController < SelfServe::BaseController 
    def new 
    @file = EmployeeFile.new 
    @section = section 
    render 'self_serve/employees/modal_form' 
    end 

    def create 
    @file = EmployeeFile.new(employee: @employee) 

    if @file.save 
     flash[:notice] = 'Your file has been successfully uploaded.' 
    else 
     flash[:error] = 'Failed to upload you file, please check fields with error.' 
    end 
    @section = section 
    @associated_resource = @file 
    render 'self_serve/employees/modal_form_submit' 
    end 

    def edit 
    @file = EmployeeFile.find(params[:id]) 
    @section = section 
    render 'self_serve/employees/modal_form' 
    end 

    def update 
    @file = EmployeeFile.find(params[:id]) 

    if @file.update_attributes(secure_params) 
     flash[:notice] = 'Your file has been successfully updated.' 
    else 
     flash[:error] = 'Failed to save file, please check fields with error.' 
    end 
    @section = section 
    @associated_resource = @file 
    render 'self_serve/employees/modal_form_submit' 
    end 

    def destroy 
    @file = EmployeeFile.find(params[:id]) 

    if @file.destroy 
     flash[:notice] = 'File has been successfully deleted.' 
    else 
     flash[:error] = 'Failed to delete file.' 
    end 
    @section = section 
    render 'self_serve/employees/modal_destroy' 
    end 

    private 

    def section 
    'personal_files' 
    end 

    def secure_params 
    params.require(:employee_file).permit(:file) 
    end 
end 

モデル

class EmployeeFile < ActiveRecord::Base 
    belongs_to :employee 
    audited associated_with: :employee 
    mount_uploader :file, EmployeeFileUploader 
    validates :employee, presence: true 
end 

EmployeeFileUploader

class EmployeeFileUploader < CarrierWave::Uploader::Base 
    include CarrierWave::Meta 

    storage :file 

    process :store_meta => [{md5sum: true}] 

    def store_dir 
    "uploads/employee/#{model.id}/files" 
    end 

    # Override the filename of the uploaded files: 
    def filename 
    @name ||= "#{Digest::MD5.hexdigest(original_filename + Time.now.to_i.to_s)}.#{file.extension}" if original_filename.present? 
    end 

    def extension_white_list 
    %w(ods docx doc xls pdf txt jpg jpeg gif png) 
    end 

end 

ビュー

<h4>Personal Files</h4> 

<% if @employee.files.any? %> 
    <div class="row"> 
     <div class="col-md-12"> 
      <%= link_to [:new, :self_serve, :employee, :employee_file], remote: true, class: 'btn btn-sm btn-success pull-right' do %> 
      <i class="fa fa-file"></i> Add File</a> 
      <% end %> 
     </div> 
     <hr/> 
    </div> 
    <table class="table table-striped"> 
     <thead class="bg-green-active"> 
      <th>Filename</th> 
      <th>Date Uploaded</th> 
      <th></th> 
     </thead> 
     <tbody> 
      <% @employee.files.each do |file| %> 
       <tr> 
        <td><%= file.file %></td> 
        <td><%= file.created_at %></td> 
        <td> 
         <%= link_to [:edit, :self_serve, :employee, file], remote: true, class: 'btn btn-xs btn-default' do %> 
         <i class="fa fa-edit"></i> Edit 
         <% end %> 
         <%= link_to [:self_serve, :employee, file], remote: true, method: :delete, class: 'btn btn-xs btn-default', data: { confirm: 'Are you sure to delete? This action cannot be undone. ' } do %> 
         <i class="fa fa-trash"></i> Delete 
         <% end %> 
        </td> 
       </tr> 
      <% end %> 
     </tbody> 
    </table> 
<% else %> 
    <div class="row"> 
    <div class="col-md-12"> 
     <%= link_to [:new, :self_serve, :employee, :employee_file], remote: true, class: 'btn btn-success pull-center' do %> 
     <i class="fa fa-plus"></i> No files uploaded yet, upload one now. 
     <% end %> 
    </div> 
    <hr/> 
    </div> 
<% end %> 

<% if @file.present? %> 

<div class="modal fade" id="file_form_modal" tabindex="-1" role="dialog"> 
    <div class="modal-dialog"> 
     <div class="modal-content"> 
      <%= simple_form_for @file, url: @file.new_record?? self_serve_employee_employee_files_path : self_serve_employee_employee_file_path(@file), :html => {:multipart => true}, remote: true do |f| %> 
       <div class="modal-header"> 
        <button type="button" class="close" data-dismiss="modal" aria-label="Close"> 
         <span aria-hidden="true">&times;</span> 
        </button> 
        <h4 class="modal-title"><%= (@file.new_record?? 'Add' : 'Edit') %> file</h4> 
       </div> 
       <div class="modal-body"> 
        <div id="modal_flash_messages"></div> 
        <div class="row form-group"> 
         <div class="col-md-6"> 
          <%= f.input :file %> 
         </div> 
        </div> 
       </div> 
       <div class="modal-footer"> 
        <button type="button" class="btn btn-default pull-left" data-dismiss="modal">Cancel</button> 
        <%= f.button :submit, 'Save changes' %> 
       </div> 
      <% end %> 
     </div> 
    </div> 
</div> 

<% end %> 

新しいレコードの作成には別の問題もあります。ご覧のように私は.saveを使用しましたが、.update_attributes（secure_params）を使用した場合、Inspect Element> Networkで定義されていないメソッド操作がエラーになります！

Answer 1

ホワイトリストパラメータですか？これはシンプルなブログ投稿コントローラです。

class PostsController < ApplicationController 

    def create 
    @post = Post.new(post_params) 

    if @memorial.save 
     flash[:notice] = "Your memorial was saved." 
     redirect_to creator_memorials_path 
    else 
     render :new 
    end 
    end 

    private 

    def post_params 
    params.require(:post).permit(:title, :description) 
    end 

end