Convert formatted phone numbers into a valid href "tel" string.
This modifier will convert a nicely formatted phone number into a numbers-only string, allowing usage inside an href.
It will convert any + symbols into 00 (for international numbers), remove (0) if it exists, and then remove all remaining non-numerical characters.
Usage
Setup:
Simply copy the Tel folder into site/addons/.
Simple Example:
// Saved data
company_phone: 123-456-789
// Usage inside template
{{ company_phone | tel }}
// Output
123456789
Real Life Example:
// Saved data
company_phone: +31 (0) 612 345 678
// Usage inside template
<p>Call Us: <a href="tel:{{ company_phone | tel }}">{{ company_phone }}</a></p>
// Output
<p>Call Us: <a href="tel:0031612345678">+31 (0) 612 345 678</a></p>