Filtering content

Warning another newbie question, but it is not clear to me who handles this (grav, php, twig, theme, etc). If I take the Blog example in the Antimatter Theme, when I click on a Tag for a blog item listing, it changes the url:

blog/tag:journal

and now I only get a listing of blogs that have that tag in it's yaml file.

Where is this code that ignores the MD files in the pages/blog folder that do not meet that criteria? I want to mimic that same behavior for other content types (documents, samples, guides, tutorials, videos) and am trying to figure out my best file/folder structure.

That logic is handled transparently by Grav in the Page->collection() method, specifically this bit where it removes pages that don't meed the criteria set by the taxonomy params in the URL: https://github.com/getgrav/grav/blob/develop/system/src/Grav/Common/Page/Page.php#L1866-L1884

Is is possible to disable this auto-magic filtering of collections? I have a project where I use collections extensively but not every collection display should be modifiable externally via a simple URL parameter.

I even wasn't aware of the auto-filtering until I looked at the source code of the collection() function.

Basically every non-modular collection in a Grav site can be filtered via the URL.
Could we have something like:

content:
  items:
    @self.children
    allow_taxonomy_filter: false

and also a site setting in system.yaml to default this filter off:

pages:
    allow_taxonomy_filter: false

I am happy to submit a PR for that.

It's a good idea to have this functionality. I'll add it. Thanks.

https://github.com/getgrav/grav/commit/7c6471fe2a0aa3b452e57941378c6d7323b2866e

Commited in Develop branch. will be enabled by default (so as not to break existing behavior, but you can either turn it off sitewide in user/config/system.yaml or in your page via:

title: 'All Pages'
content:
    items: 
        @self.children
    order:
        by: date
        dir: desc
    limit: 25
    pagination: true
    url_taxonomy_filters: false

Fantastic, thanks for adding that.