erikringsmuth/app-router

regular expression + data binding

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#27 opened on Oct 1, 2014

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enhancementhelp wanted

Description

I think app-router could use regular expressions in order to match path variables. Regex with named captures would be great but Javascript doesn't support them natively (xregexp is a js library that support named captures). Even simple native capture groups (by index number) would be great.

An example:

<!-- url -->
http://www.example.com/demo/15

<!-- route, notice variables attribute  -->
<!-- first capure [word (\w+)], second capture [number (\d+)] -->
<app-route path="/^\/(\w+)\/(\d+)$/i" regex variables="word number" import="/pages/regex-page.html"></app-route>

<!-- data binding -->
<regex-page word="demo" number="15"></order-page>

It's much more powerful than actual path variable data binding (using semicollon like :pathArg1). Thank you for app-router.

Contributor guide

Tech stack
javascripthtmlweb components
Domain
frontend
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.
over 1 week
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.
mostly clear
Prerequisites
app router internalsregular expressionsWeb Components basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
The issue requests adding regular expression support to app router path matching, with an example using HTML attributes. Begin by examining the current route parsing logic in the repository (likely in app router.html). Then evaluate how to integrate regex patterns while maintaining backward compatibility. Consider adapting existing regex libraries or implementing native regex matching.