Source
File: wp-includes/rest-api/class-wp-rest-request.php
public function sanitize_params() {
$attributes = $this->get_attributes();
// No arguments set, skip sanitizing.
if ( empty( $attributes['args'] ) ) {
return true;
}
$order = $this->get_parameter_order();
$invalid_params = array();
foreach ( $order as $type ) {
if ( empty( $this->params[ $type ] ) ) {
continue;
}
foreach ( $this->params[ $type ] as $key => $value ) {
if ( ! isset( $attributes['args'][ $key ] ) ) {
continue;
}
$param_args = $attributes['args'][ $key ];
// If the arg has a type but no sanitize_callback attribute, default to rest_parse_request_arg.
if ( ! array_key_exists( 'sanitize_callback', $param_args ) && ! empty( $param_args['type'] ) ) {
$param_args['sanitize_callback'] = 'rest_parse_request_arg';
}
// If there's still no sanitize_callback, nothing to do here.
if ( empty( $param_args['sanitize_callback'] ) ) {
continue;
}
$sanitized_value = call_user_func( $param_args['sanitize_callback'], $value, $this, $key );
if ( is_wp_error( $sanitized_value ) ) {
$invalid_params[ $key ] = $sanitized_value->get_error_message();
} else {
$this->params[ $type ][ $key ] = $sanitized_value;
}
}
}
if ( $invalid_params ) {
return new WP_Error(
'rest_invalid_param',
/* translators: %s: List of invalid parameters. */
sprintf( __( 'Invalid parameter(s): %s' ), implode( ', ', array_keys( $invalid_params ) ) ),
array(
'status' => 400,
'params' => $invalid_params,
)
);
}
return true;
}