是否有人创建了一个表单,用户可以在其中通过单击按钮从活动存储和Amazon S3中删除他们以前上传的图像?我在这里使用这个问题作为指南,但我的应用程序设置略有不同。图像保存为数组(请参阅控制器参数(。
表单呈现删除按钮和图像,但是当单击删除按钮时,我收到错误"找不到带有'id'=eyJfcmFpbHM的空间..." 并且我的set_space方法中的这一行突出显示
@space = Space.find(params[:id])
这是相关代码
控制器
class SpacesController < ApplicationController
before_action :set_space, except: [:index, :new, :create]
before_action :authenticate_user!, except: [:show]
def update
if @space.update(space_params)
flash[:notice] = "Saved!"
else
flash[:notice] = "Something went wrong. Please check your submission and try again."
end
redirect_back(fallback_location: request.referer)
end
def delete_image_attachment
@space_image = ActiveStorage::Blob.find_signed(params[:id])
@space_image.purge_later
redirect_to listing_space_path(@space)
end
private
def set_space
@space = Space.find(params[:id])
end
def space_params
params.require(:space).permit(:space_name, :space_type, :description, space_image: [])
end
end
带有删除按钮/图标的视图
<div>
<% if @space.image.attached? %>
<% @space.image.each do |image| %>
<%= image_tag image %>
<span>
<%= link_to '<- Remove', delete_image_attachment_space_url(image.signed_id),
method: :delete,
data: { confirm: 'Are you sure?' } %>
<i class="fas fa-trash"></i>
</span>
<% end %>
<% end %>
</div>
路线.rb
resources :spaces, except: [:edit] do
member do
get 'listing'
delete :delete_image_attachment
end
end
set_space
正在寻找空间对象的 id
对delete_image_attachment
的调用传递image.signed_id
,即空间图像对象的id
,而不是空间对象的id
。
假设已在Space和SpaceImage类上以标准方式设置导航,则可以从图像对象中找到空间对象。因此,请进行这些更改...
before_action :set_space, except: [:index, :new, :create, :delete_image_attachment]
def delete_image_attachment
@space_image = ActiveStorage::Blob.find_signed(params[:id])
@space_image.purge_later
redirect_to listing_space_path(@space_image.space)
end
这会将正确的空间 ID 传递给listing_space_path。