Class: QgsMapLayerDependency

Models dependencies with or between map layers.

A dependency is defined by a layer ID, a type and an origin. The two combinations of type/origin that are currently supported are:

• PresenceDependency && FromProvider: virtual layers for instance which may depend on other layers already loaded to work

• DataDependency && FromUser: dependencies given by the user, mainly to represent database triggers

List of all members, including inherited members

Constructor

__init__

Enums

Origin
Type

Methods

layerId	Returns the ID of the layer this dependency depends on
origin	Returns the dependency origin
type	Returns the dependency type

class qgis.core.QgsMapLayerDependency

Bases: object

__init__(layerId: str | None, type: QgsMapLayerDependency.Type = QgsMapLayerDependency.DataDependency, origin: QgsMapLayerDependency.Origin = QgsMapLayerDependency.FromUser)

Standard constructor

Parameters:

• layerId (Optional[str])

• type (QgsMapLayerDependency.Type = QgsMapLayerDependency.DataDependency)

• origin (QgsMapLayerDependency.Origin = QgsMapLayerDependency.FromUser)

__init__(a0: QgsMapLayerDependency)

Parameters:

a0 (QgsMapLayerDependency)

DataDependency = 2

FromProvider = 0

FromUser = 1

class Origin(*values)

Bases: IntEnum

FromProvider = 0

FromUser = 1

PresenceDependency = 1

class Type(*values)

Bases: IntEnum

DataDependency = 2

PresenceDependency = 1

layerId(self) → str

Returns the ID of the layer this dependency depends on

Return type:

str

origin(self) → QgsMapLayerDependency.Origin

Returns the dependency origin

Return type:

QgsMapLayerDependency.Origin

type(self) → QgsMapLayerDependency.Type

Returns the dependency type

Return type:

QgsMapLayerDependency.Type