Is there a way to map new filter to existing filter?

[mckingho]

liquid-rust version: 0.21.4
rust version: 1.49.0
OS: Any

I want to add a custom filter called url_param_escape, which is exactly the same function of a standard filter url_encode in the module. Can I bind new filter name to existing filter so that both filter name are valid and function the same way?

Edit:
This is my solution. originalFilter is the struct of original filter that impl Filter trait.

#[derive(Clone, ParseFilter, FilterReflection)]
#[filter(
    name = "alias_name",
    description = "Alias of original filter.",
    parsed(originalFilter)
)]
pub struct AliasFilter;

[epage]

All of the filters are exposed and can be added to the parser like the default set does: https://github.com/cobalt-org/liquid-rust/blob/master/src/parser.rs#L109

You'll have to use a newtype to give it a new name.

Whats the motivation for renaming?

[mckingho]

url_param_escape is a filter supported in shopify. It is very similar to url_encode. Before I posted this question, I want to find a way to do some alias mapping rather than duplicate all the codes from url_encode. Because I want to support both filters, not renaming.

But I just review shopify's document, there is slight difference between two filters. So I am going to write a custom one instead.

[epage]

Either way, if you are up for contributing it back, that'd be great! We are working on having the official liquid filters, shopify, jekyll, and custom, see https://github.com/cobalt-org/liquid-rust/tree/master/crates/lib/src