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Support General My custom metabox stops working on WP 4.9.8 Reply To: My custom metabox stops working on WP 4.9.8

#11329

FED
Participant

Ok, I’m having some trouble updating my custom field to override the format_single_value method in the RWMB_Choice_Field. I’m extending the RWMB_Input_List_Field class because I want a list of checkboxes. Basically, I want to be able to pre-fill the checkbox options after a user as applied a Category to a CPT.

However, I’m getting Undefined index: multiple when I try to do that. I guess that makes sense because I’m using multiple values, but trying to override the format_single_value method. Is there another method in RWMB_Input_List_Field that I should be using instead?

Thanks in advance.

P.S. I can make a new post if that is preferred.