回形针 - 如何访问保存的文件

Question

每一个！我正在使用回形针上传文件

class Model 
    include Mongoid::Document 
    include Mongoid::Paperclip 

    has_many :myfiles 
end 

class Myfile 
    include Mongoid::Document 
    include Mongoid::Paperclip 

    belongs_to :model 
    has_mongoid_attached_file :file, 
    :path => ":rails_root/public/uploads/:class/:id/:basename.:extension", 
end 

我的问题是如何访问保存后上传的文件？我想：

@model.myfiles.first.path 
@model.myfiles.first.url 

提示错误：

NoMethodError: undefined method `path' for #<Myfile:0x007fd22b336f80> 

非常感谢您的帮助！

Answer 1

试试:)

@model.myfiles.first.file.path 
@model.myfiles.first.file.url 

可以委托这些领域，如果想

class Myfile 
    include Mongoid::Document 
    include Mongoid::Paperclip 

    belongs_to :model 
    has_mongoid_attached_file :file, 
    :path => ":rails_root/public/uploads/:class/:id/:basename.:extension" 

    delegate :url, :path, to: :file, allow_nil: true, prefix: false 
end 

然后你可以使用

@model.myfiles.first.path 
@model.myfiles.first.url