Passing error/warning messages from a meta box to admin_notices

Posted by Prem Tiwari | Updated on

You can do this by hand, but WP natively does it like this for settings errors:

  1. add_settings_error() to create message.
  2. Then set_transient('settings_errors', get_settings_errors(), 30);
  3. settings_errors() in admin_notices hook to display (will need to hook for non-settings screens).

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