Question

I have a vote model with “like”, “dislike” actions. I have a route for each of these actions. When I call the actions, I’m returning a json response. My problem is that first, I need to figure out how to send the query to my like/dislike actions. I need to access ruby/rails variables from my javascript (I’m sending an ajax request using jquery’s $.getJSON), so that for example I can create the request for the correct item. Help much appreciated.

Answer 1

A popular technique is to attach data to the dom. For example (pseudocode follows):

<% items.each do |item| %>
  <div class="like_button" data-item-id="<%= item.id %>">Like</div>
<% end %>

and in the JavaScript:

$(".like_button").on("click", function() {
  var item_id = $(this).data('item-id'); // from the dom
  // construct Ajax request for item_id
});