Pass instance variable to js Rails

Question

In my search controller I have an instance variable, @results. I set it to return a dummy result, 'foo'.

In my search.html.erb view... I set window.results = <%= raw @results.to_json %>.

At the top of my search.js asset file, I console.log(results) and get undefined, but when I get into the devtools after the page load, results is populated with 'foo'. The console.log statement is also wrapped in a jquery ready function.

What gives?

Steve · Accepted Answer · 2015-01-16 00:12:02Z

4

Rails assets are precompiled so they don't have access to instance variables coming from the controller. Embed the Javascript directly into your view using a script tag and access the @results just like you did. You could also initiate a call to an external Javascript file.

answered Jan 16, 2015 at 0:12

Steve

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Kyle Carlson Over a year ago

That's my case too, but I want to have the same JS in multiple views (not everywhere). When I put my JS in an external file, the ERB doesn't evaluate. Any ideas?

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