Ruby - Rails - Pass text to javascript

Question

Why isn\'t this passing text to javascript/jquery.? @i[:error] definitely has a string in it, I can print that on console.

js.erb file -

&l         


        

Answer 1

Yes, it's probably because of the line break. You can fix it by using escape_javascript.

Escapes carriage returns and single and double quotes for JavaScript segments.

So:

$('#error').text("<%= escape_javascript(@i[:error]) %>");

Answer 2

If you specify what debugger says it would be easier to understand the problem. This code for erb views works fine:

<% @i = {} %>
<% @i[:error] = "Error" %>  

<% unless @i[:error].blank? %>
  <script>
    $(document).ready(function() {
      $('#error').text('<%= @i[:error] %>'); // Works fine
    });
  </script>
<% end %>

Pay attention that emptiness of string is checked by blank? method, I think it look much nicer than using != operator.