Question

我正在尝试删除为模型上传的每个单个图像（工作有很多图像）但是现在我的代码工作方式如下：我在工作中上传了三个图像，我想删除一个但是当我检查时图像的复选框并提交更新操作，它将删除所有三个图像。

这是我的工作模型的代码：

  before_save :destroy_image?

  belongs_to :category
  has_many :images, :as => :assetable, :class_name => "Work::Image", :dependent =>    :destroy

  accepts_nested_attributes_for :images, :reject_if => proc { |attributes| attributes['attachment'].blank? }

  def image_delete
    @image_delete ||= "0"
  end

 def image_delete=(value)
   @image_delete = value
 end

private
   def destroy_image?
    self.images.clear if @image_delete == "1"
   end


end


class Work::Image < Asset
   has_attached_file :attachment, :styles => {:small => "200x150>", :large =>    "400x300>"},
:url  => "/uploads/works/:id/:style/:basename.:extension",
:path => ":rails_root/public/uploads/works/:id/:style/:basename.:extension"

end

我认为问题在于删除所有图片

self.images.clear if @image_delete == "1"

但我不明白如何解决它。我希望在你的帮助下。

Answer 1

您应该使用accepts_nested_attributes_for的:allow_destroy选项代替。

在你的形式上是这样的：

<% @work.images.each do |image| %>
  <%= f.fields_for :images, image do |image_fields| %>
    <%= image_tag image.url(:small) %>
    <%= image_fields.check_box :_destroy %>
  <% end %>
<% end %>

使用回形针删除图像

1 个答案: