rest_validate_request_arg
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WordPress REST API: Schema & Validation
In the WordPress REST API, args do the checking for you. Mark a param as required and core answers 400 restmissingcallbackparam before your callback runs. Give it a…
In the WordPress REST API, args do the checking for you. Mark a param as required and core answers 400 restmissingcallbackparam before your callback runs. Give it a…