manage_blocks: Plugin module for managing board blocks

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

Plugin module for managing board blocks

Description

Logic and user experience for adding/removing blocks to the board can be customized or enhanced by providing an alternate version of this plugin. The default implementation provides a modal-based UI with simple shiny inputs such as drop-downs and text fields.

Usage

manage_blocks(server = manage_blocks_server, ui = manage_blocks_ui)

manage_blocks_server(id, board, update, ...)

manage_blocks_ui(id, board)

Arguments

server, ui	Server/UI for the plugin module
id	Namespace ID
board	The initial board object
update	Reactive value object to initiate board updates
...	Extra arguments passed from parent scope

Details

Updates are mediated via the shiny::reactiveVal() object passed as update, where block updates are communicated as list entry blocks with components add and rm, where

• add may be NULL or a block object (block IDs may not already exist),

• rm may be NULL or a string (of existing block IDs).

Value

A plugin container inheriting from manage_blocks is returned by manage_blocks(), while the UI component (e.g. manage_blocks_ui()) is expected to return shiny UI (i.e. shiny::tagList()) and the server component (i.e. manage_blocks_server()) is expected to return NULL.

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