Platform Variables

Platform Variables is the term used in GeoHazardWatch for dynamic values that can be inserted into pages. These are also known as WikiVariables (the JSPWiki term).

Variable Types

GeoHazardWatch supports three categories of variables:

Configuration Values

Configuration Values come from the system configuration and are accessed using the ConfigAccessorPlugin. These are static values set by administrators.

Syntax: [{ConfigAccessor property='ngdpbase.property.name'}] will show:

Examples:

Application name
Base URL
Feature flags
System limits

See Configuration System for details on available configuration properties.

Contextual Variables

Contextual Variables are dynamic values that depend on the current user session or page being viewed.

Syntax: [{$variablename}]

Examples:

Variable	Description	Example Output
`[{$pagename}]`	Current page title	Platform Variables
`[{$username}]`	Current user	Anonymous
`[{$requestcontext}]`	Current action	{$requestcontext}

System Variables

System Variables are dynamic values about the platform itself, independent of user or page context.

Syntax: [{$variablename}]

Examples:

Variable	Description	Example Output
`[{$applicationname}]`	Platform name	GeoHazardWatch
`[{$totalpages}]`	Total page count	133
`[{$uptime}]`	Server uptime	21h 51m 13s
`[{$timestamp}]`	Current timestamp	2026-06-06T02:55:42.961Z

Using Variables

Variables are inserted into pages using the JSPWiki syntax:

The current page is [{$pagename}] and you are logged in as [{$username}].

This platform ([{$applicationname}]) has [{$totalpages}] pages.

Variable Plugins

Several plugins provide variable functionality:

Plugin	Purpose
Using VariablesPlugin	Display all available variables
ConfigAccessorPlugin	Access configuration values
Current Time Plugin	Display formatted date/time
Using UptimePlugin	Display server uptime
Using TotalPagesPlugin	Display page count

Viewing Available Variables

Use the Using VariablesPlugin to see all available variables:

[{VariablesPlugin}]