yogthos/Selmer

Is it possible to apply a filter to the output of a tag?

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#234 opened on Jun 16, 2020

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 (2 comments) (0 reactions) (0 assignees)Clojure (670 stars) (86 forks)batch import
enhancementhelp wantedquestion

Description

I have a custom tr tag that returns internationalized strings from a dictionary, and I'd like to apply a Selmer filter to its output. Is that possible?

As a simple example: say {% tr core/greeting %} parses to Hello or Hola depending on a user's current language preference, and I'd like to then apply |upper to the output of that tag.

Contributor guide

Tech stack
None
Domain
backenddeveloper experience
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
Basic understanding of Selmer tagsFamiliarity with Clojure macros
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the Selmer tag rendering pipeline in selmer.parser to determine if filters can be applied to tag outputs. Consider extending the tag compilation to support filter chaining, or propose a workaround using a custom filter that wraps the tag call.