Duplication of injected JS for nested async templates

[vanboom]

I have a tabbed UI where a CREATE action can add tabs. The tabs are dynamically loaded using render_async when the user clicks on the tab label. Consider something like this...

Each tab is loaded asynchronously, so the view layout contains:

= content_for(:render_async)

However, because the CREATE function can add a new tab to the UI, the asynchronous view partial also contains:

= content_for(:render_async)

This is causing duplication of the injected Javscript when the view is rendered because it is being injected at the layout level and within the partial for each tab.

Possible solution: what if the render_async method accepted an option to specify the content tag? This would provide control over where the injected Javascript would go. Of course, the option would default to :render_async for backward compatibility. I will experiment with this on my fork and offer a PR if I can get something working.

[nikolalsvk]

This should now be possible to avoid with 2.1.7 version! Big thanks to @vanboom for making a feature of customizing content_for name a reality 🍰 🎉 !

BTW, there is also a Discord channel where you can post suggestions and get help quickly. I'd be happy to see you there as well. 💚