CODEWITHSUNDEEP
htmlruby-on-railsfor-loopruby-on-rails-4
Joseph
Joseph

Reputation: 103

How do I rearrange order of comments?

I'm making a comment system, and it's a little messed up. It's listing comments from old to new, when I need it to go in the reverse order (newest on top). How do I do this?

Code: (/app/views/comments/_comment.html.erb)

<%= div_for comment do %>
        <p>
                <strong>
                        Posted <%= time_ago_in_words(comment.created_at) %> ago
                </strong>
                <br/>
                <%= comment.body %>
        </p>
<% end %>

Edit: Here is the comments controller:

class CommentsController < ApplicationController
    def create
        @post = Post.find(params[:post_id])
        @comment = @post.comments.create(params[:comment].permit(:commenter, :body))
        respond_to do |format|
            format.html { redirect_to @post }
            format.js
        end
    end
end

Upvotes: 0

Views: 149

Answers (2)

Mohammad AbuShady
Mohammad AbuShady

Reputation: 42899

Using default scopes can easily be confusing, because if I tried Comment.order(:id) I would actually get select * from comments order by created_at desc, id asc which might take time in debugging wondering why aren't they ordered by id, and to avoid that you need to do something like Comment.unscoped.order(:id) which is annoying if you ask me, instead i would prefer doing a scope that i could invoke only when i know i need it

scope :chronological_order -> { order(created_at: :desc) }

Then call it 

Comment.chronological_order

of course you can pick whatever scope name you prefer.

Upvotes: 0

apneadiving
apneadiving

Reputation: 115541

In your Comment model, add:

default_scope -> { order('created_at DESC') }

This way, @post.comments will be properly ordered.

Upvotes: 1

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