Is it possible to add a javascript variable into an escape_javascript statement?

Question

I know this sounds insane. ;)

My Line :

"#{escape_javascript(content_tag(:a, "edit", :href => edit_object_payment_url(@object, "\#{payment_id}")))

Then with interpolation, I inject my variables. Payment_id is a javascript variable. Is it possible to syntactically pass that variable into this escaped_javascript statement?

Stuart M · Accepted Answer · 2013-04-12 15:14:48Z

1

Your Rails view won't have access to JavaScript variables, so you won't be able to call the Rails URL helper methods like edit_object_payment_url using JavaScript variables. But you could use JavaScript to construct the URL on the client side.

answered Apr 12, 2013 at 15:14

Stuart M

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4 Comments

Trip Over a year ago

Is it then possible to perform a ternary expression within a javascript string interpolation?

Stuart M Over a year ago

Not sure about within interpolation, but you can do "here's " + (x ? 'one' : 'a') + " string"

Trip Over a year ago

I don't believe that's true. My code : "<a href='objects/357/payments/"+ typeof payment_id === 'undefined' ? '357' : #{payment_id} + "'>Delete</a>" Still returns undefined variable payment_id

Stuart M Over a year ago

That's because, within an <a> element you're not executing JavaScript. There you are expected to be writing valid HTML, which doesn't support concatenating values with +, or interpolation for that matter. What you can do, though, is (within a <script>), run some JS code like this (using jQuery): $('a#my_link').prop('href', 'objects/357/payments/' + payment_id);

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