WP_REST_Font_Families_Controller::create_item( WP_REST_Request $request ): WP_REST_Response|WP_Error

Source

public function create_item( $request ) {
	$settings = $request->get_param( 'font_family_settings' );

	// Check that the font family slug is unique.
	$query = new WP_Query(
		array(
			'post_type'              => $this->post_type,
			'posts_per_page'         => 1,
			'name'                   => $settings['slug'],
			'update_post_meta_cache' => false,
			'update_post_term_cache' => false,
		)
	);
	if ( ! empty( $query->posts ) ) {
		return new WP_Error(
			'rest_duplicate_font_family',
			/* translators: %s: Font family slug. */
			sprintf( __( 'A font family with slug "%s" already exists.' ), $settings['slug'] ),
			array( 'status' => 400 )
		);
	}

	return parent::create_item( $request );
}

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