在rails中显示某些用户的博文 [英] Show certain user's blog posts in rails

问题描述

嗯，开始学习rails，当然也可以用个人博客（livejournal）来编写一个服务。我有脚本和用户模型（感谢Devise）。现在我试图显示某些用户在URL中的用户名/帖子的所有帖子，但是真的不明白如何使这种方式。
已经在路由中嵌套资源

 资源：用户做
资源：帖子
结束
  

与

  has_many：posts 
  

和

  belongs_to：user 
  

我为用户创建控制器吗？有没有正确的方法？

感谢你的回答。尝试学习轨道，但几乎每个教程，我发现结束脚手架，这不是很有帮助。

编辑1：感谢匹配的想法，我解决了一半的问题。另一个（未解决的）一半是选择某些用户写的帖子

编辑2：添加

  @user = User.where（：username => params [：username]）
 @posts = @ user.posts 
  

对于控制器，但我在帖子控制器中有undefined方法`posts'错误。

解决方案

当您使用其中时，您将从查询中获取一组对象，而不是单个对象。

由于此您的 @user 变量中没有帖子方法。

也许你应该更改为这样的东西，只能检索一个用户：

  @ user = User.find_by_username（params [：username]）
  

这样你只有一个用户查询，您可以使用 .posts relashionship无错误。

Well, started to learn rails and of course started by writing a service with personal blogs (something like livejournal). I have posts scaffold and user model (thanks to Devise). Now I'm trying to show all posts by certain user with something like /username/posts in url but really can't understand how to make this rails-way. Already made nested resources in routes

resources :users do 
  resources :posts 
end

and connected user and post models with

has_many :posts

and

belongs_to :user

Should I create controller for user or not? Is there any proper way for this?

P.S. Thanks for the answer. Trying to study rails but almost every tutorial I found ends with scaffolding and that's not very helpful.

Edit 1: Thanks to the "match" idea I solved half of the problem. The other (unsolved) half is selecting posts written by certain user

Edit 2: Added

@user = User.where(:username => params[:username])
@posts = @user.posts

To controller, but I have "undefined method `posts'" error in posts controller.

解决方案

When you use where you get an array of objects from the query, not a single object.
And because of this you don't have the posts method on your @user variable.
Maybe you should change to something like this, to retrieve only one user:

@user = User.find_by_username(params[:username])

This way you have only one user queried and you can use the .posts relashionship without errors.

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