Access variable from controller within a respond_to js file

Question

I'm using Rails 3.1 and trying to add some ajax functionality (using jquery + coffeescript).

I have a respond_to block in the controller

 def edit       
    @variable = 123
    respond_to do |format|
      format.js 
    end
  end

and a file app/views/test/edit.coffee.js

The file edit.coffee.js is be picked up and is running correctly, but I can't work out how to access @variable from the javascript.

Is there a way to pass this variable in to the js.coffee script? or do update an element on the page so that I can access it from the js.coffee?

mu is too short · Accepted Answer · 2012-01-29 22:38:55Z

2

Change the name of your view file to edit.coffee.js.erb and then reference @variable ERB-style in your CoffeeScript:

some_method: ->
    console.log('<%=j @variable %>')

answered Jan 29, 2012 at 22:38

mu is too short

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Comments

NielsH · Accepted Answer · 2012-03-02 14:24:28Z

1

With rails 3.2.1 I used

edit.js.coffee

and inside the template

alert '<%=j @variable %>'

to make this work.

I didn't work with the .erb suffix.

answered Mar 2, 2012 at 14:24

NielsH

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