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I'm new to Rails and didn't really understand the asset pipeline by now…

I want to let a

views/product/product.js 

automatically fire after the

views/product/index.html.erb 

was rendered for DRY reasons.

Is there a place in the asset pipeline that calls a model.js file after loading any or a partial model.erb file?

I know how to do it manually, and dropped a

app/assets/javascripts/product.js

but then i have to call a doSomethingAfterPageload() Method in new, show. delete etc. Even better, if this works for partials as well.

I'm new to Rails and didn't really understand the asset pipeline by now…

I want to let a

views/product/product.js 

automatically fire after the

views/product/index.html.erb 

was rendered for DRY reasons.

Is there a place in the asset pipeline that calls a model.js file after loading any or a partial model.erb file?

I know how to do it manually, and dropped a

app/assets/javascripts/product.js

but then i have to call a doSomethingAfterPageload() Method in new, show. delete etc. Even better, if this works for partials as well.

• javascript
• ruby-on-rails
• asset-pipeline
• actionview

Share Improve this question Follow edited Feb 20, 2014 at 16:46 Guilherme Franco 1,4831212 silver badges1919 bronze badges asked Feb 20, 2014 at 16:27 user3320429user3320429 6311 silver badge33 bronze badges

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3 Answers 3

Sorted by: Reset to default 4

The asset pipeline under a vanilla configuration is just (simplified explanation) going to take all of js files referenced in the manifest (application.js) and create single, minified, obfuscated file for production. In development, if you include the manifest in your page (should be the layout), you'll end up with js script include tags for each asset that the manifest contains.

A mon pattern is to put at yield :javascript block in your layout and then in the individual view, call the javascript function inside of a content_for :javascript do block.

Best way to add page specific javascript in a Rails 3 app?

A fancier approach would be to conditionally execute js based on the controller and action. Here's how that works: http://viget./inspire/extending-paul-irishs-prehensive-dom-ready-execution

IMO, if this js method should be called in each view of the product model, you can defined a layout for product, and called the method inside the layout file.

Taken from here: Asset Pipeline - Rails guides

If you add app/assets/javascripts/<controller>.js it will be available for that particular controller.

So if you add to app/assets/javascripts/product.js:

$(document).ready ->
  alert "page has loaded!"

It will be executed in every view of that controller, like index or edit.

Hope this helps :)

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