所以我使用Active Storage上传附加到Collection模型的多个图像.除非我试图从集合中清除/删除单个附件,否则一切都很顺利.
问题：出于某种原因,每当我加载集合的显示页面时,我的所有图像都会被立即清除/删除.当然,每当我点击链接时我只想删除一个文件.有谁知道如何解决这个问题？
我的收藏展示视图：
<div id="gallery">
<% @collection.images.each do |image| %>
<%= image_tag(image) %>
<%= link_to 'Remove image',image.purge %>
<% end %>
</div>
我已经阅读了http://edgeguides.rubyonrails.org/active_storage_overview.html#removing-files的文档
(见第4段)
但遗憾的是,这并未提供有关如何专门使用purge或purge_later方法的任何信息.
编辑
目前我的代码改为此(仍然遗憾地无效)：
<div id="gallery">
<% @collection.images.each do |image| %>
<%= image_tag(image) %>
<%= link_to 'Remove',delete_image_attachment_collections_url(image.signed_id),method: :delete,data: { confirm: 'Are you sure?' } %>
<% end %>
</div>
在我的collections_controller.rb中有这个
def delete_image_attachment
@image = ActiveStorage::Blob.find_signed(params[:id])
@image.purge
redirect_to root_path
end
服务器日志：
Started DELETE "/collections/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBYdz09IiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--3e75276d414b4c2040e02cf0afbc083e2337faa0/delete_image_attachment" for ::1 at 2018-03-29 19:06:55 +0200
Processing by CollectionsController#delete_image_attachment as HTML
Parameters: {"authenticity_token"=>"60zIkeknxRYp/sJIWNwF+BrEftYHSCQvak34h8FkadPXgVPQSXN/sCoxI/6FU+jZbqQitES81fyqkmIx6XYp6w==","id"=>"eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBYdz09IiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--3e75276d414b4c2040e02cf0afbc083e2337faa0"}
ActiveStorage::Blob Load (0.1ms) SELECT "active_storage_blobs".* FROM "active_storage_blobs" WHERE "active_storage_blobs"."id" = $1 LIMIT $2 [["id",90],["LIMIT",1]]
↳ app/controllers/collections_controller.rb:69
Disk Storage (0.1ms) Deleted file from key: 8wpzqPQcWYjK2rVEejcU88FB
Disk Storage (0.0ms) Deleted files by key prefix: variants/8wpzqPQcWYjK2rVEejcU88FB/
(0.0ms) BEGIN
↳ app/controllers/collections_controller.rb:70
ActiveStorage::Blob Destroy (0.2ms) DELETE FROM "active_storage_blobs" WHERE "active_storage_blobs"."id" = $1 [["id",90]]
↳ app/controllers/collections_controller.rb:70
(2.0ms) COMMIT
↳ app/controllers/collections_controller.rb:70
ActiveStorage::Attachment Load (0.2ms) SELECT "active_storage_attachments".* FROM "active_storage_attachments" WHERE "active_storage_attachments"."record_id" = $1 AND "active_storage_attachments"."record_type" = $2 AND "active_storage_attachments"."name" = $3 LIMIT $4 [["record_id",["record_type","ActiveStorage::Blob"],["name","preview_image"],1]]
↳ app/controllers/collections_controller.rb:70
Redirected to http://localhost:3000/
Completed 302 Found in 5ms (ActiveRecord: 2.5ms)
耙路线的输出：
Prefix Verb URI Pattern Controller#Action
root GET / home#index
about GET /about(.:format) pages#about
contact GET /contact(.:format) pages#contact
settings GET /settings(.:format) settings#edit
new_setting GET /setting/new(.:format) settings#new
edit_setting GET /setting/edit(.:format) settings#edit
setting GET /setting(.:format) settings#show
PATCH /setting(.:format) settings#update
PUT /setting(.:format) settings#update
DELETE /setting(.:format) settings#destroy
POST /setting(.:format) settings#create
delete_image_attachment_collection DELETE /collections/:id/delete_image_attachment(.:format) collections#delete_image_attachment
collections GET /collections(.:format) collections#index
POST /collections(.:format) collections#create
new_collection GET /collections/new(.:format) collections#new
edit_collection GET /collections/:id/edit(.:format) collections#edit
collection GET /collections/:id(.:format) collections#show
PATCH /collections/:id(.:format) collections#update
PUT /collections/:id(.:format) collections#update
DELETE /collections/:id(.:format) collections#destroy
rails_service_blob GET /rails/active_storage/blobs/:signed_id/*filename(.:format) active_storage/blobs#show
rails_blob_representation GET /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations#show
rails_disk_service GET /rails/active_storage/disk/:encoded_key/*filename(.:format) active_storage/disk#show
update_rails_disk_service PUT /rails/active_storage/disk/:encoded_token(.:format) active_storage/disk#update
rails_direct_uploads POST /rails/active_storage/direct_uploads(.:format) active_storage/direct_uploads#create
我的routes.rb：
Rails.application.routes.draw do
root 'home#index'
get 'about',to: 'pages#about',as: :about
get 'contact',to: 'pages#contact',as: :contact
get 'instellingen',to: 'settings#edit'
resource :setting
resources :collections do
member do
delete :delete_image_attachment
end
end
end
解决方法
您循环遍历图像集合并在每个图像上调用清除方法.相反,您应该链接到控制器上的destroy方法,类似下面的内容考虑您的控制器操作并猜测您的路由名称.
错误是因为图像对象返回其完整路径,并且链接认为您要指向的内容.相反,你只需要它的signed_id,并希望链接调用具有delete_image_attachment路径的路由.
<%= link_to 'Remove',data: { confirm: 'Are you sure?' } %>
destroy方法看起来像这样……
def delete_image_attachment @image = ActiveStorage::Blob.find_signed(params[:id]) @image.purge redirect_to collections_url end
路线应该是这样的……
resources :collections do
member do
delete :delete_image_attachment
end
end
查看rails routing guide以获取更多有趣的路由事实.