Getting current url from a collection in Jekyll - jekyll

Question

If I want to get a page's url it's not exactly complicated:
page.url
However, what if I make a collection who's job it is to be used like an include instead of like a page?
If I make such a collection and ask for page.url it gives me the path to the collection instead of the path to the current url.
Is there a way to get the real current URL in Jekyll?
Edit: example
test.md:
---
title: Test page
permalink: /test/
---
Test page
{% for block in site.blocks %}
{% if block.whatever %}
{{ block.content }}
{% endif %}
{% endfor %}
_blocks/block.md:
---
whatever: true
---
{% page.relative_path %}
Got:
Test page
/_blocks/block.md
Expected:
Test page
test.md

Answer 1

I've been using jekyll for a short time and I'm relying on collections to build my first static portfolio site. So far all my attempts when trying to get the path to the current url simply fails.
In order to achieve the desired result, I've used Jekyll Liquid filters.
Here is how you'd get the expected result you as per your question:
test.md:
---
title: Test page
permalink: /test/
---
Test page
{% for block in site.blocks %}
{% if block.whatever %}
{{ block.content }}
{% endif %}
{% endfor %}
_blocks/block.md:
---
whatever: true
---
{{ page.relative_path | replace:'index.html', '' | remove: '_blocks/' | prepend: site.baseurl }}
Output on Test page
Test page
test.md
Update:
Perhaps the following is not the most straightforward method to get the path to the current url, but by defining relative_path: in the front-matter definitions of a document you'd also get the result you expect, of course this is something required on a per page basis.
---
whatever: true
relative_path: test.md
---
{% page.relative_path %}
So in this very specific case
{% page.relative_path %}
should output
test.md
A Jekyll's doc reminder:
As per Jekyll's doc, when you create a collection it becomes available via the site Liquid variable, pretty much like site.posts and site.pages, so you're able to use the available filters in most cases.
I hope it helps!