问题描述
我已经使用设计用户设置了身份验证，并且我有我的相册控制器，我在其中插入了多个图像。到目前为止，我刚刚在我的相册控制器中创建了一个删除图像的方法。
我的相册控制器如下所示：
class AlbumsController < ApplicationController
before_action :authenticate_user!
def index
@albums = current_user.albums.all
end
def show
@album= current_user.albums.find(params[:id])
end
def new
@album = current_user.albums.new
end
def create
@album = current_user.albums.new(album_params)
if @album.save
redirect_to albums_path
else
render :new
end
end
def edit
@album =current_user.albums.find(params[:id])
end
def update
@album = current_user.albums.find(params[:id])
if @album.update(album_params)
redirect_to albums_path
else
render :edit
end
end
def destroy
@album = current_user.albums.find(params[:id])
@album.destroy
redirect_to albums_path
end
def delete_image_attachment
@image = current_user.albums.ActiveStorage::Blob.find(params[:id])
@image.purge
redirect_to albums_path
end
private
def album_params
params.require(:album).permit(:title,:desciption,images: [])
end
end
你可以看到我创建了一个名为 delete_image_attachment..
现在我不知道在我的路由文件中输入什么：
Rails.application.routes.draw do
devise_for :users
root to: "albums#index"
resources :albums do
resources :comments
end
end
<%= link_to 'Remove',method: :delete,data: {confirm: "Are You Sure ?"} %>
我的 Rails 路线是：
Prefix Verb URI Pattern Controller#Action
new_user_session GET /users/sign_in(.:format) devise/sessions#new
user_session POST /users/sign_in(.:format) devise/sessions#create
destroy_user_session DELETE /users/sign_out(.:format) devise/sessions#destroy
new_user_password GET /users/password/new(.:format) devise/passwords#new
edit_user_password GET /users/password/edit(.:format) devise/passwords#edit
user_password PATCH /users/password(.:format) devise/passwords#update
PUT /users/password(.:format) devise/passwords#update
POST /users/password(.:format) devise/passwords#create
cancel_user_registration GET /users/cancel(.:format) devise/registrations#cancel
new_user_registration GET /users/sign_up(.:format) devise/registrations#new
edit_user_registration GET /users/edit(.:format) devise/registrations#edit
user_registration PATCH /users(.:format) devise/registrations#update
PUT /users(.:format) devise/registrations#update
DELETE /users(.:format) devise/registrations#destroy
POST /users(.:format) devise/registrations#create
root GET / albums#index
album_comments GET /albums/:album_id/comments(.:format) comments#index
POST /albums/:album_id/comments(.:format) comments#create
new_album_comment GET /albums/:album_id/comments/new(.:format) comments#new
edit_album_comment GET /albums/:album_id/comments/:id/edit(.:format) comments#edit
album_comment GET /albums/:album_id/comments/:id(.:format) comments#show
PATCH /albums/:album_id/comments/:id(.:format) comments#update
PUT /albums/:album_id/comments/:id(.:format) comments#update
DELETE /albums/:album_id/comments/:id(.:format) comments#destroy
albums GET /albums(.:format) albums#index
POST /albums(.:format) albums#create
new_album GET /albums/new(.:format) albums#new
edit_album GET /albums/:id/edit(.:format) albums#edit
album GET /albums/:id(.:format) albums#show
PATCH /albums/:id(.:format) albums#update
PUT /albums/:id(.:format) albums#update
DELETE /albums/:id(.:format) albums#destroy
rails_postmark_inbound_emails POST /rails/action_mailBox/postmark/inbound_emails(.:format) action_mailBox/ingresses/postmark/inbound_emails#create
rails_relay_inbound_emails POST /rails/action_mailBox/relay/inbound_emails(.:format) action_mailBox/ingresses/relay/inbound_emails#create
rails_sendgrid_inbound_emails POST /rails/action_mailBox/sendgrid/inbound_emails(.:format) action_mailBox/ingresses/sendgrid/inbound_emails#create
rails_mandrill_inbound_health_check GET /rails/action_mailBox/mandrill/inbound_emails(.:format) action_mailBox/ingresses/mandrill/inbound_emails#health_check
rails_mandrill_inbound_emails POST /rails/action_mailBox/mandrill/inbound_emails(.:format) action_mailBox/ingresses/mandrill/inbound_emails#create
rails_mailgun_inbound_emails POST /rails/action_mailBox/mailgun/inbound_emails/mime(.:format) action_mailBox/ingresses/mailgun/inbound_emails#create
rails_conductor_inbound_emails GET /rails/conductor/action_mailBox/inbound_emails(.:format) rails/conductor/action_mailBox/inbound_emails#index
POST /rails/conductor/action_mailBox/inbound_emails(.:format) rails/conductor/action_mailBox/inbound_emails#create
new_rails_conductor_inbound_email GET /rails/conductor/action_mailBox/inbound_emails/new(.:format) rails/conductor/action_mailBox/inbound_emails#new
edit_rails_conductor_inbound_email GET /rails/conductor/action_mailBox/inbound_emails/:id/edit(.:format) rails/conductor/action_mailBox/inbound_emails#edit
rails_conductor_inbound_email GET /rails/conductor/action_mailBox/inbound_emails/:id(.:format) rails/conductor/action_mailBox/inbound_emails#show
PATCH /rails/conductor/action_mailBox/inbound_emails/:id(.:format) rails/conductor/action_mailBox/inbound_emails#update
PUT /rails/conductor/action_mailBox/inbound_emails/:id(.:format) rails/conductor/action_mailBox/inbound_emails#update
DELETE /rails/conductor/action_mailBox/inbound_emails/:id(.:format) rails/conductor/action_mailBox/inbound_emails#destroy
new_rails_conductor_inbound_email_source GET /rails/conductor/action_mailBox/inbound_emails/sources/new(.:format) rails/conductor/action_mailBox/inbound_emails/sources#new
rails_conductor_inbound_email_sources POST /rails/conductor/action_mailBox/inbound_emails/sources(.:format) rails/conductor/action_mailBox/inbound_emails/sources#create
rails_conductor_inbound_email_reroute POST /rails/conductor/action_mailBox/:inbound_email_id/reroute(.:format) rails/conductor/action_mailBox/reroutes#create
rails_service_blob GET /rails/active_storage/blobs/redirect/:signed_id/*filename(.:format) active_storage/blobs/redirect#show
rails_service_blob_proxy GET /rails/active_storage/blobs/proxy/:signed_id/*filename(.:format) active_storage/blobs/proxy#show
GET /rails/active_storage/blobs/:signed_id/*filename(.:format) active_storage/blobs/redirect#show
rails_blob_representation GET /rails/active_storage/representations/redirect/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations/redirect#show
rails_blob_representation_proxy GET /rails/active_storage/representations/proxy/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations/proxy#show
GET /rails/active_storage/representations/:signed_blob_id/:variation_key/*filename(.:format) active_storage/representations/redirect#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
解决方法
如果您希望能够单独处理 CRUD 图像，我建议您设置一个中间模型而不是使用 has_many_attached :images，因为实际路由到单个图像会非常尴尬。
这还为您提供了一个合乎逻辑的位置，可以用标题等内容来注释图像。 has_many_attached 有它的位置，但如果您附加的实际上是域对象，则不是。
resources :albums do
resources :images,only: [:destroy]
end
class Album < ApplicationRecord
has_many :images
end
module Image < ApplicationRecord
belongs_to :album
has_one_attached :file
# use callbacks to purge
end
class ImagesController < ApplicationController
before_action :authenticate_user
before_action :set_image
before_action :authorize_image
# DELETE /albums/1/images/2
def destroy
@image.destroy
redirect_to @album,notice: 'Image removed'
end
private
def set_image
@album = Album.find(params[:album_id])
@image = @album.images.find(params[:id])
end
# you should really consider using pundit or cancancan for authorization
def authorize_image
unless @album.user == current_user
redirect_to root_path,error: "You're not authorized"
end
end
end
<% @album.images.each do |image| %>
<div class="album-image">
<%= image_tag image.file %>
<%= button_to 'Delete image',[@album,image],method: :delete %>
</div>
<% end %>
正确吗？
@image = current_user.albums.ActiveStorage::Blob.find(params[:id])
我认为我们需要做
@image = current_user.albums.find(params[:id])
然后
@image.purge