CODEWITHSUNDEEP
javascriptruby-on-railshaml
user1139144
user1139144

Reputation:

Rails & Haml - Passing data to javascript

I am trying to pass data from my haml views to javascript. In my welcome controller I have index method. In my index.html.haml view file I have the below:

:javascript
  window.putalert = "#{ "Data" }";

and in my welcome.js.coffee I have:

jQuery ->
        alert putalert

However, the above is not working. I am getting Uncaught ReferenceError: putalert is not defined.

Any suggestions on how to solve this?

The error message in chrome debugging is 

(function() {

  jQuery(function() {
    return alert(putalert);
Uncaught ReferenceError: putalert is not defined
  });

}).call(this);

Upvotes: 1

Views: 5745

Answers (2)

Austin Lin
Austin Lin

Reputation: 2564

One really nice way to handle data for JavaScript in general is to use the data attributes on HTML tags. Then using something like jQuery you can pull that info. It's a little cleaner than injecting it into the js.

More info: http://ejohn.org/blog/html-5-data-attributes/

Upvotes: 0

Michael Koper
Michael Koper

Reputation: 9791

You can inject javascript with the :javascript haml tag. You can insert Ruby with #{}. Try something like this:

:javascript
  window.putalert = "#{ "Data" }";

You could even insert coffeescript in your views if you want (You have to use tilt for this):

:coffee
  @putalert = "#{ "Data" }"

Here a reference of the haml filters: http://haml.info/docs/yardoc/file.REFERENCE.html

Upvotes: 3

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