gpeb-filter-with-default-value.php: Added snippet to load Entries Block with a provided default value on a filter.

[saifsultanc]

Context

⛑️ Ticket(s): https://secure.helpscout.net/conversation/2565332084/64616?folderId=3808239

Summary

Setup default value for a filter in the Filters block.

Applied the wp_safe_redirect logic as on core we do when we manually "apply" a filter (here)

[claygriffiths]

I like the scrappiness of a redirect here, but it's pretty jank.

My inclination is to introduce a new method in GPEB that handles rgget( 'filters' ) and wraps it with a filter hook.

https://github.com/gravitywiz/gp-entry-blocks/blob/master/includes/class-gf-queryer.php#L363

You'll also likely want to update any $_GET['filters'] in class-filters.php for the block itself so the Filters form is populated.