Access collections using bracket notation

[hacknug]

Is your feature request related to a problem? Please describe.
I'm trying to create an include that renders the navigation for a given collection.

This collection is contextual and linked directly to the one and only tag each page is set to. tags[0] holds the name of my collection eg: apples.

I can access collections.apples with no issues (as expected) but I can not write collections[ "apples" ] (nor collections[ tags[0] ], of course).

Describe the solution you'd like
I'd like to be able to use bracket notation to access collections as exposed.

Describe alternatives you've considered
Using a shortcode that takes tags[0] as an argument would solve my issue if I was able to access all collections inside the shortcode function (maybe this is already possible and I've missed it?).

Additional context
Ended up adding a shortcode that takes collections and tags[0] as arguments so I could search and replace with a regex.

[pieterbeulque]

What templating engine are you working with?

[hacknug]

Liquid. Sorry, forgot to mention that 😅

[zachleat]

Looks like there are some limitations with Liquidjs here.

I added a bunch of tests here, you can have a look: https://github.com/11ty/eleventy/blob/master/test/TemplateRenderLiquidTest.js#L980

The ones prefixed with test.skip are failures.

The short answer here is that you need to remove your spaces around your quoted strings. collections["apples"] works but collections[ "apples" ] fails.

Also test[ref] works but test[ref[0]] fails. You could probably work around this by assigning ref[0] to a new value before you use it.

This might improve when the liquid upgrade ships #469. I’ll try to unskip the tests when that happens.