Date Interval String for Craft

Takes a string & turns it into a ISO 8601 Interval String. Useful for time duration properties for schema.org

See here: https://schema.org/totalTime

Usage

####As a Filter {{ "15 Minutes" | dateIntervalString }}

{{ someVariable | dateIntervalString }}

Example

<time datetime="{{ "15 minutes" | dateIntervalString }}" itemprop="totalTime">15 minutes</time>

Compiles to:

<time datetime="PT15M" itemprop="totalTime">15 minutes</time>