在铁路机上,我想允许用户相互传递信息。 因此,我有一个用户模式,可以做到:
has_many :messages
我认为,<代码>Message模型将有一个,从 Field, 包含发送该编码的用户的id,另一个是to field, 其中包含其向用户发送的用户查询。 问答模式的最佳做法是什么? 如果我这样提出:
<代码>铁路g模型 信息:integer to:integer name:string content:text
我如何将其与用户联系起来? 鉴于<代码>从 和到各外地参照现有用户,我是否应当将其与2个用户联系起来? 我如何代表这一关系? 在电文模式中,我会谈什么关系? <代码>标签_to :user?
我认为,应当有一种办法,让铁路公司管理对我而言的用户id,以便我不必自己制造田地。
User
has_many :sent_messages, :class_name => "Message", :foreign_key => from
has_many :received_messages, :class_name => "Message", :foreign_key => to
Message
belongs_to :sender, :class_name => User , :foreign_key => from
belongs_to :receiver, :class_name => User :foreign_key => to
如果你想要你,你或许会这样做。
has_many :sent_messages, :class_name => Message , :foreign_key => from
has_many :received_messages, :class_name => Message , :foreign_key => to
与此类似:。 铁路模型具有多个外壳:。
collection_select and select Rails helpers: Which one should I use? I can t see a difference in both ways. Both helpers take a collection and generates options tags inside a select tag. Is there a ...
We ve deployed our rails app to EC2. In our setup, we have two proxies on small instances behind round-robin DNS. These run nginx load balancers for a dynamically growing and shrinking farm of web ...
As part of a web application I need an auth-code to pass as a URL parameter. I am currently using (in Rails) : Digest::SHA1.hexdigest((object_id + rand(255)).to_s) Which provides long strings like : ...
I ve installed RubyCAS-Client version 2.1.0 as a plugin within a rails app. It s working, but I d like to remove the ?ticket= in the url. Is this possible?
I have a these 3 models: class User < ActiveRecord::Base has_many :permissions, :dependent => :destroy has_many :roles, :through => :permissions end class Permission < ActiveRecord::...
I m building an xml document from a hash. The xml attributes need to be in order. How can this be accomplished? hash.to_xml
guys which text editor is good for Rubyonrails? i m using Windows and i was using E-Texteditor but its not free n its expired now can anyone plese tell me any free texteditor? n which one is best an ...
I’m developing an application dedicated to generate statistical reports, I would like that user after saving their stat report they save sql queries too. To do that I wrote the following module: ...