帶複選框的多更新布爾狀態（Rails 3）

Question

好這個問題我確定它並不難，但是對於rails來說我是新手，我有點迷路。 在觀看Railscasts第52集後，我繼續製作自己的發佈/未發佈幻燈片列表。

所以這是表單視圖

= form_tag publish_admin_category_slides_path(@cat4), :method => "put" do 
#pricing  
    %table#plans 
     %thead 
      %tr 
       %th Image 
       %th Published 

     %tbody 
     - @image.each do |im| 
      %tr.odd 
       %td 
        = image_tag im.avatar.url(:thumb) 

        = link_to "Delete", admin_category_slide_path(@cat4,im), :method => "delete" 

        %span is 

       %th 
        = check_box_tag "slide_published[]", im.published ,im.published 

隨着控制器動作#publish

def publish 

    Slide.update_all(:published => params[:slide_published]) 
    redirect_to :action => "index" 
    end 

什麼會寫這樣的事情的正確方法？ 帶有複選框的列表改變了屬性和多重更新的布爾狀態？

Answer 1

一些xp l8r我能夠找到像這樣的東西。 我貼吧，以防某人有類似問題

def publish 

      @cat = Category.find(params[:category_id]) 
      if params[:slide_published] 
      checked_slides = Slide.find(params[:slide_published]) 

      end 

      unless checked_slides.blank? 
      @cat.slides.all.each do |slide| 
       if checked_slides.include?(slide)  
        slide.update_attribute :published, true unless slide.published? 
       else 
        slide.update_attribute :published, false unless !slide.published? 
       end 
      end 
      end 

      if checked_slides.blank? 
      @cat.slides.all.each do |slide| 

       slide.update_attribute :published, false unless !slide.published? 
      end 
      end