Support » Plugins and Hacks » How to check for duplicate values in Meta Box before publishing?
5 years ago
How to achieve the below scenario?
I have a created a meta box named Links with the plugin More Fields in Post type POST, where it will be filled with a website URL.
When i create a new post, if the entered url in the meta box Links is a duplicate value then i need to be warned before publishing, so that i can change the link thus avoiding any duplicate values.
Your help will be highly appreciated. Please find the below image for reference.