刪除上傳的圖片軌道4 carrierwave

Question

嘗試使用carrierwave

<%= f.fields_for :images do |ff| %> 
    <div class="form-group"> 
     <label> 
     <%= ff.check_box :remove_image %> 
      <%= image_tag ff.object.image %> 
     </label> 
     </div> 
<% end %> 

獲得這樣PARAMS在控制器

"images_attributes"=>{"0"=>{"remove_image"=>"0", "id"=>"13"}, "1"=>{"remove_image"=>"1", "id"=>"14"}, "2"=>{"remove_image"=>"0", "id"=>"15"}, "3"=>{"remove_image"=>"0", "id"=>"16"}, "4"=>{"remove_image"=>"0", "id"=>"17"}, "5"=>{"remove_image"=>"0", "id"=>"18"}}} 

刪除上傳的圖片，但這些PARAMS什麼也沒有發生，我缺少什麼更新對象時？

更新

def update 
    @country = Country.find(params[:id]) 

    if @country.update(country_params) 
     flash[:notice] = 'Country is successfully updated.' 
     redirect_to edit_admin_country_path 
    else 
     flash[:error] = @country.errors.full_messages[0] 
     render 'edit' 
    end 
    end 

    def country_params 
    permitted = [{images_attributes: ["image", "@original_filename", "@content_type", "@headers", "_destroy", "id", "remove_image"]}] 
    params.require(:country).permit(*permitted) 
    end 

class Country < ActiveRecord::Base 
    has_many :images 
    .... 
end 

class Image < ActiveRecord::Base 

    mount_uploader :image, ImageUploader 
    belongs_to :country 
end 

Answer 1

你的形式看起來不錯，但你缺少控制器動作

礦的樣子：

class ImageController < ApplicationController 
    ... 
    def update 
    @image = Image.find(params[:id]) 
    ... 
    if params[:images][:remove_image].present? 
     @image.remove_image! 
    end 
    @image.save 
    end 
end 

如果你想手動刪除文件，你可以調用remove_avatar !,然後保存該對象。