Class: QgsValueMapFieldFormatter

Field formatter for a ValueMap field.

A value relation field formatter looks up the values a map.

The map is defined in the configuration as dictionary under the key “map”:

{ "map": { 1: "one", 2: "two", 3: "three" } }

Values that are not on the map will be wrapped in parentheses. So with the above configuration:

• 3 => “three”

• 5 => “(5)”

Class Hierarchy

Base classes

QgsFieldFormatter

A field formatter helps to handle and display values for a field.

Attributes

NULL_VALUE

Will be saved in the configuration when a value is NULL.

class qgis.core.QgsValueMapFieldFormatter

Bases: QgsFieldFormatter

__init__()

Default constructor of field formatter for a value map field.

__init__(a0: QgsValueMapFieldFormatter)

Parameters:

a0 (QgsValueMapFieldFormatter)

NULL_VALUE: str = '{2839923C-8B7D-419E-B84B-CA2FE9B80EC7}'

Will be saved in the configuration when a value is NULL. It’s the magic UUID {2839923C-8B7D-419E-B84B-CA2FE9B80EC7}