Improve query params manipulation

[piljac1]

This pull request adds the following:

1. The current_full_url cascade contextual variable which behaves the same as current_url but includes query parameters
2. An add_query_param modifier which adds the specified key/value pair to the URL as a valid query param
3. A set_query_param modifier which adds the specified key/value pair to the URL (or updates the matching key) as a valid query param
4. A remove_query_param modifier which removes the query param matching the specified key (if it exists) from the URL

Usage

{{ url add_query_param="category|dogs" }}
{{ url set_query_param="category|dogs" }}
{{ url remove_query_param="category" }}

<!-- or -->

{{ url add_query_param:category:dogs }}
{{ url set_query_param:category:dogs }}
{{ url remove_query_param:category }}

Todo list

• Add a current_full_url cascade contextual variable which returns the complete URL
• Add an add_query_param modifier which adds the specified key/value pair to the URL as a valid query param
• Add a set_query_param which adds the specified key/value pair to the URL (or updates the matching key) as a valid query param
• Add a remove_query_param which removes the query param matching the specified key (if it exists) from the URL
• Make sure to preserve the anchor tag if it was specified

As for the implementation, there's a way of doing it with regex, but it's not much shorter, so contact me if you want a regex version (already saved a version aside for the setQueryParam modifier).

[jasonvarga]

This is great.

If you could apply the simple style changes listed here, that would be great.

https://github.styleci.io/analyses/ZlMv6b?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link

[piljac1]

This is great.

If you could apply the simple style changes listed here, that would be great.

https://github.styleci.io/analyses/ZlMv6b?utm_campaign=vcs-integration-link&utm_medium=referral&utm_source=github-build-link

Done !

[jasonvarga]

Awesome, thanks!