Required Conditions Fulfilled

[Aternus]

Is there a way to check whether all required plugins have been installed before continuing with the theme code execution?

I would like to halt (gracefully) and show an error message on the front end for users without the required plugins.

[jrfnl]

Duplicate of #484 #485 and #550.

You can use TGM_Plugin_Activation::get_instance()->is_tgmpa_complete(), but as this method is meant for internal use, it will report false if there are plugins which need updates or optional plugins which haven't been installed.

Alternatively - in your case this might be the better option - you can pass your list of required plugins through a foreach() checking each with the WP native is_plugin_active().

Hope this helps.