Creating Forms That Submit POST Requests

Here are some requirements for using a <form method="post">. See the AMP documentation for more details.

• The action-xhr attribute is required in order to submit a POST request. The form will then use XHR, without a page refresh. This enables using a template or an amp-live-list to display the response.

• In the back-end handler for this request, you may use wp_send_json(), or a function that calls that. Like wp_send_json_success() (example).

• Otherwise, call wp_redirect() at the end of the back-end handler. The plugin will intercept the redirect, add response headers, and call wp_send_json_success().

• There's no need to enqueue the required amp-form script, as this plugin will do that when it finds a <form>. The same applies to all components.