notify_user: User notification plugin module

In blockr.core: Graphical Web-Framework for Data Manipulation and Visualization

User notification plugin module

Description

During the evaluation cycle of each block, user notifications may be generated to inform in case of issues such as errors or warnings. These notifications are provided in a way that display can be controlled and adapted to specific needs. The default notify_user plugin simply displays notifications via shiny::showNotification(), with some ID management in order to be able to clear no longer relevant notifications via shiny::removeNotification().

Usage

notify_user(server = notify_user_server, ui = NULL)

notify_user_server(id, board, ...)

Arguments

server, ui	Server/UI for the plugin module
id	Namespace ID
board	Reactive values object
...	Extra arguments passed from parent scope

Value

A plugin container inheriting from notify_user is returned by notify_user(), while the UI component (e.g. notify_user_ui()) is expected to return shiny UI (i.e. shiny::tagList(); if available) and the server component (i.e. notify_user_server()) is expected to return a shiny::reactiveVal() or shiny::reactive() which evaluates to a list containing notifications per block and notification type (i.e. "message", "warning" or "error").

blockr.core documentation built on June 8, 2025, 1:43 p.m.