如何在Heroku上的活动管理中删除回形针图像

Question

截至目前，用户可以将图像上传到活动管理员，还可以查看该图像的预览。 但是，我不确定如何向该图像添加删除按钮。 这是我现在在Active Admin中用于内容输入视图的代码：

 ActiveAdmin.register Content do

  form :html => { :enctype => "multipart/form-data" } do |f|
      f.input :image, :as => :file, :hint => f.template.image_tag(f.object.image.url(:thumb))
      f.input :remove_image, as: :boolean, required: false, label: "remove image"
    end
  f.buttons
 end

模型Content.rb

  attr_writer :remove_image

  def remove_image
    @remove_image || false
  end

  def before_remove_image
    if self.remove_image
      self.remove_image = nil
    end
  end

当我检查布尔值并尝试更新它时，它向我抛出以下错误：

RSolr::Error::Http - 500 Internal Server Error
Error:     /Users/LMo/Made/gluten-free-all/gluten-free/solr/data/development/index/segments_11 (No such file or directory)

java.io.FileNotFoundException: /Users/LMo/Made/gluten-free-all/gluten-free/solr/data/development/index/segments_11 (No such file or directory)
    at java.io.RandomAccessFile.open(Native Method)
    at java.io.RandomAccessFile.<init>(RandomAccessFile.java:233)
    at org.apache.lucene.store.SimpleFSDirectory$SimpleFSIndexInput$Descriptor.<init>(SimpleFSDirectory.java:70)
    at org.apache.lucene.store.SimpleFSDirectory$SimpleFSIndexInput.<init>(SimpleFSDirectory.java:97)
    at org.apache.lucene.store.NIOFSDirectory$NIOFSIndexInput.<init>(NIOFSDirectory.java:92)
    at org.apache.lucene.store.NIOFSDirectory.openInput(NIOFSDirectory.java:79)
    at org.apache.lucene.store.FSDirectory.openInput(FSDirectory.java:345)
    at org.apache.lucene.index.SegmentInfos.read(SegmentInfos.java:265)

Answer 1

我使用了它，但是它可能适用于ActiveAdmin的旧版本。 也许您可以修改它？

# In app/admin/model.rb
form :html => { :enctype => "multipart/form-data" } do |f|
  f.inputs do
    #...
    f.input :icon, :as => :file, :label => "Icon", :hint => f.template.(f.object.icon.url(:thumb))
      if (f.object.icon.present?)
        f.input :delete_icon, :as=> :boolean, :required => false, :label => 'Remove image'
      end
   end
   f.buttons
 end

# model.rb
attr_accessor :delete_icon
before_validation { self.icon.clear if self.delete_icon == '1' }

Answer 2

谢谢您的帮助。 这是最终的工作代码...

管理员/product.rb

f.input :image, required: false, hint: (("Current image:<br/>").html_safe + f.template.image_tag(f.object.image.url(:thumb))).html_safe
f.input :remove_image, as: :boolean, required: false, label: "Remove Image"

型号/product.rb

attr_writer :remove_image

def remove_image
  @remove_image || false
end

before_validation { self.image.clear if self.remove_image == '1' }