Free plugin for using a meta / custom field as a location rule. *Depends on ACF 4+.*
This add-on to Advanced Custom Fields (ACF) makes it possible to add location rules for the custom fields / meta fields of any post.
Using this plugin, you can create any custom field and make another set of custom fields, depend on the value of this custom field.
We decided to create this plugin, as we often face problems when trying to deploy our ACF fields from test to production, due to the nature of the other location rules. The built in location rules in ACF are mostly based on IDs, but IDs are rarely the same in test as in production.
This software is licensed under the GNU General Public License version 3. See gpl.txt included with this software for more detail.
Please note, that this plugin is an unofficial Advanced Custom Fields-plugin.