我的附件服务发生错误，无法找到附件'ID'=

Question

我有我的附件模型与test_suite模型相关。我可以将文件上传到我的数据库。我能够看到我上传的文件的内容。我实现了一个服务方法和URL，当我想要看到该文件是正确的。但是，我得到 “无法找到 '身份证'=附件”

控制器/ attachment_controller.rb：

def serve 
     @attachment = Attachment.find(params[:id]) # this is the line generating the error 
     send_data(@attachment.file_contents, :filename => "#{@attachment.attach_file_name}", 
              :type => @attachment.attach_content_type, 
              :size => @attachment.attach_file_size, 
              :disposition => "inline") 
end 

的routes.rb：

resources :test_suites do 
    resources :attachments, :only => [:create, :new, :destroy,:show] do 
     get "serve" # since serve is not a restfull route, it need to be under it's resource 
    end 
    end 

模型/附件。 RB：

class Attachement < ApplicationRecord 
    belongs_to :test_suite 
    has_attached_file :attach 

    validates_attachment_content_type :attach, :content_type => ["text/xml", "text/plain","text/html"], :message => 'File must be txt, xml, or html' 

    # create a function that sets the uploadedFile object attributes to our newly created file. 
    def attach=(attach) 
     # read allows us to process the data and read from it 
     self.file_contents = attach.read 
     self.attach_file_name = attach.original_filename 
     self.attach_content_type = attach.content_type 
     self.attach_file_size = attach.size 
    end 
end 

视图/ test_suites/show.html.erb：

<% test_suite.attachments.each do |attachment| %> 
    <p><%= link_to attachment.attach_file_name.split('.').first, test_suite_attachement_serve_path(test_suite,attachment)%> </p> 

<% end %> 

Answer 1

在成员块添加它

resources :test_suites do 
    resources :attachments, :only => [:create, :new, :destroy,:show] do 
    member do 
     get :serve # since serve is not a restfull route, it need to be under it's resource 
    end 
    end 
end 

，这将产生以下为您

/test_suites/attachments/:id/serve