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.