Home › Forums › Backend Issues (wp-admin) › Set WordPress excerpt and post thumbnail based on custom field › Reply To: Set WordPress excerpt and post thumbnail based on custom field
I was curious because you said that
acf/save_post is not working. ACF4 uses
acf_save_post, but if you’re using ACF5 then there isn’t any reason it shouldn’t be working.
The code used when using
acf/save_post should be different. For one thing acf passes your action function the post ID so you don’t need to go through the trouble of figuring out what it is.
When using acf/save_post or save_post hooks, there is a change of creating an infinite loop and you need to remove the action and add it again. This is probably the cause of your internal server error. https://codex.wordpress.org/Plugin_API/Action_Reference/save_post#Avoiding_infinite_loops
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