BP_REST_Notifications_Endpoint::create_item( WP_REST_Request $request )

	public function create_item( $request ) {
		// Setting context.
		$request->set_param( 'context', 'edit' );

		$notification_id = bp_notifications_add_notification( $this->prepare_item_for_database( $request ) );

		if ( ! is_numeric( $notification_id ) ) {
			return new WP_Error(
				'bp_rest_user_cannot_create_notification',
				__( 'Cannot create new notification.', 'buddyboss' ),
				array(
					'status' => 500,
				)
			);
		}

		$notification  = $this->get_notification_object( $notification_id );
		$fields_update = $this->update_additional_fields_for_object( $notification, $request );

		if ( is_wp_error( $fields_update ) ) {
			return $fields_update;
		}

		$retval = $this->prepare_response_for_collection(
			$this->prepare_item_for_response( $notification, $request )
		);

		$response = rest_ensure_response( $retval );

		/**
		 * Fires after a notification is created via the REST API.
		 *
		 * @param BP_Notifications_Notification $notification The created notification.
		 * @param WP_REST_Response              $response     The response data.
		 * @param WP_REST_Request               $request      The request sent to the API.
		 *
		 * @since 0.1.0
		 */
		do_action( 'bp_rest_notifications_create_item', $notification, $response, $request );

		return $response;
	}