CODEWITHSUNDEEP
ruby-on-rails
oobie11
oobie11

Reputation: 925

How do I link to a post associated with a user (rails 4)?

First part:

I have an index page that lists all the posts in my app. I want to be able to click on the links title and have it redirect me to the posts show page. Here is my index page.

<% provide(:title, "All Posts") %>
<% @posts.each do |post| %>
    <div>
        <h2><%= link_to post.title.titleize, post %> by <%= post.author.name.titleize %></h2>
        <div><%= post.body %></div>
    </div>
<% end %>

When I try to go to my index page I get

undefined method `post_path' for #<#<Class:0x007fc6df41ff98>:0x007fc6df436e78>

I pretty sure its because of the post in my link_to, but I dont know what I would put there to make it go to the right place. When I run rake routes it shows that the posts#show action is

user_post GET    /users/:user_id/posts/:id(.:format)      posts#show

so I tried replacing post with user_post_path(post) but then I get

No route matches {:action=>"show", :controller=>"posts", :user_id=>#<Post id: 4, title: "werwef", body: "erfwerfwerf", user_id: 3, created_at: "2013-08-16 20:05:43", updated_at: "2013-08-16 20:05:43">, :id=>nil, :format=>nil} missing required keys: [:id]

What should it be changed to?

Second part:

I have <%= post.author.name.titleize %> to print out the users name that posted the post, and Im getting it from a method I defined in my post model

def author
    User.find(self.user_id)
end

Is this the best way to do this? Before I made the method, I tried post.user.name, but that didn't work and just told me there was no method for user defined. Thanks for the help.

Upvotes: 2

Views: 1683

Answers (1)

Justin D.
Justin D.

Reputation: 4976

First Part

Since these are nested paths, have you considered passing the User as well as the Post? Your final URL expects a user_id as well as a post_id, so you may need to call the following:

<%= link_to user_post_path(post.user, post) %>

The documentation is here: Rails Guide on Nested Resources

Extracted from this SO question.

Second Part

You might miss the association calls :

Post.rb

belongs_to :user

User.rb

has_many :posts

And then you can use post.user

Upvotes: 4

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