Question

Essentially, I have a binary voting system Like/Dislike. Thee class is called Like It has polymorphic associations to likeable:

class Like < ActiveRecord::Base
     belongs_to :likeable, polymorphic: true
end

and we have the class Comment, which also has polymorphic associations to commentable and can be liked

class Comment < ActiveRecord::Base
     belongs_to :commentable, polymorphic: true
     has_many :likes, :as :likeable
end

We have the class Section, which can also be liked and commented on

class Section < ActiveRecord::Base
    has_many :likes, as: :likeable
    has_many :comments, as: commentable
end

However, on the page section#show I display the Section information, the section likes, and then the comments (from a comments/comments partial). Here is the Section#show view:

<h1><%= exercise.name %></h1>
<p><%= exercise.description %></p>
<%= render 'likes/like_button' %>
<%= render 'comments/comments' %>
<%= render 'comments/comment_form' %>

However, I want the ability to vote on each comment.

The following code is from the _comments.html.erb – What currently doesn’t work is the rendering of the _like_button.html.erb because it doesn’t apply to the comment at hand.

<% @comments.each do |comment| %>
    <%= comment.content %>
    <%= render 'likes/like_button' %>
<hr />
<% end %>

And here is the _like_button.html.erb partial

<% if @like.nil? %>
    <%# No record of Like in table %>
    <%= form_for [@likeable, Like.new] do |f| %>
    <%= f.submit "Like" %>
    <%= f.submit "Dislike" %>
    <% end %>
<% else %>
    <%# Marks current chosen option, if the opposite option is chosen, the record is updated to reflect the descion by the user %>
    <%= form_for [@likeable, @like] do |f| %>
        <% if @like.is_liked %>
            Currently Liked!
            <%= f.submit "Dislike" %>
        <% else %>
            <%= f.submit "Like" %>
            Currently Disliked!
        <% end %>
    <% end %>
<% end %>

So ultimately, I just want to know how to make it possible to vote on a comment from within the Section#show view
Thanks!

Answer 1

Try this:

<% @comments.each do |comment| %>
    <%= comment.content %>
    <%= render 'likes/like_button', :like => comment.like, :likeable => comment %>
<hr />
<% end %>

<% if like.nil? %>
    <%# No record of Like in table %>
    <%= form_for [likeable, Like.new] do |f| %>
    <%= f.submit "Like" %>
    <%= f.submit "Dislike" %>
    <% end %>
<% else %>
    <%# Marks current chosen option, if the opposite option is chosen, the record is updated to reflect the descion by the user %>
    <%= form_for [likeable, like] do |f| %>
        <% if like.is_liked %>
            Currently Liked!
            <%= f.submit "Dislike" %>
        <% else %>
            <%= f.submit "Like" %>
            Currently Disliked!
        <% end %>
    <% end %>
<% end %>