Magento extension that adds code before_body_end OR header based on route/uri I select

Question

We were Googling to find an extension that maybe existed that adds code (or not_ based on certain routes.

Based on the router it either adds some code in before_body_end or header. Much like Config->Miscellaneous Scripts only with a little more granularity.

We have come across some solutions to add custom code to a router via extension.

But I was wondering if a more robust solution already exists. Where one would select the route from a dropdown list (of routes) and then enter the code or external JS one would want to add. And if not, how would we begin the task of setting this up.

Almost sounds like a great idea ;)

Links

Adding external JS

Magento routes

Answer 1

You could use an "extension" called Mage_Widget¹, if the UI is not too complicated for your needs.

As widget type, I choose "static block" and create a static block that contains the script(s) to be added. The block can be selected in the "Widget Options" tab.

Using "Display On", I select a route (can also be a specific CMS page or specific product).

The "Block Reference" references the parent block: Page Bottom is the label for before_body_end, Page Top the label for after_body_start.

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^{1) This is a core module, just open "CMS > Widget Instances" in the admin panel}