Looking for some guidance regarding an issue that has had me stumped for a few days now.
My company is looking to setup a blog utilizing WordPress where we'll have ~20 different authors. We have some strict layout requirements that has required me to utilize some plugins which expose their functionality through custom fields.
The problem is this: I would look to add validation when a post is published to make sure that they've populated the custom fields required for our custom layout.
I've searched for plugins which add a level of validation to custom fields but the search came up empty. I've also looked to see what actions/filters I could plugin to that would allow me to halt the save and return a "you must enter a value for ______" type of message to the user but I can't seem to locate anything which achieves this behavior.
Anybody have any ideas how to achieve this or at least point me in the direction of something similar so I can see how to achieve this. Thanks in advance!