问题
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.
回答1:
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.
回答2:
When using
resources :users do
resources :posts
end
you will end up having urls like '/users/1/posts'
First to have username in case of id you need to write
def to_param
self.username
end
in your user model.
Or if you don't want your url to be /users/:id/posts you can create a route url using match
match ':username/posts' ,'posts#show'
which will take you to the posts controller and show action.
来源：https://stackoverflow.com/questions/11888587/show-certain-users-blog-posts-in-rails