CODEWITHSUNDEEP
ruby-on-rails
Bob Sumo
Bob Sumo

Reputation: 207

Displaying all comments for a ruby on rails blog

I'm another Rails newbie and have followed the Ruby tutorial on creating a blog.

Each post has many comments and the comments belong to the posts.

I can see the comments in the individual blogs and have created a show link to show the individual comment.

What I'd really like to do is create an index page for comments which shows all of them. I created an index action in the comments controller:

 def index
     @title = "All comments"
     @comments = Comment.all
end

And an accompanying index page,

All comments

<% @comments.each do |comment| %> Comment: <%= @comment.body %>

<% end %>

But I get an error:

undefined method `body' for nil:NilClass

My routes file:

resources :posts do resources :comments end

I'd really appreciate it if someone could point me in the right direction - I think my issue is that my comments are nested in the posts.

Thanks,

Bob

Upvotes: 0

Views: 1053

Answers (2)

William
William

Reputation: 3529

So in your loop in the view file, you are iterating over the @comments array, creating a comment object for each of the comments in @comments. As such, try

<% @comments.each do |comment| %> Comment: <%= comment.body %>

Upvotes: 1

McStretch
McStretch

Reputation: 20675

You should be using the comment passed into the block:

<% @comments.each do |comment| %> Comment: <%= comment.body %>

You're currently calling @comment.body, and @comment is nil because it is undefined in your controller and elsewhere.

Upvotes: 1

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