Class: QgsVectorLayerUndoPassthroughCommand

Undo command for vector layer in transaction group mode.

Class Hierarchy

Base classes

QgsVectorLayerUndoCommand	Base class for undo commands within a QgsVectorLayerEditBuffer.
QUndoCommand

Subclasses

QgsVectorLayerUndoPassthroughCommandAddAttribute	Undo command for adding attri to a vector layer in transaction group.
QgsVectorLayerUndoPassthroughCommandAddFeatures	Undo command for adding a feature to a vector layer in transaction group mode.
QgsVectorLayerUndoPassthroughCommandChangeAttribute	Undo command for changing attr value from a vector layer in transaction group.
QgsVectorLayerUndoPassthroughCommandChangeAttributes	Undo command for changing attributes’ values from a vector layer in transaction group.
QgsVectorLayerUndoPassthroughCommandChangeGeometry	Undo command for changing feature geometry from a vector layer in transaction group.
QgsVectorLayerUndoPassthroughCommandDeleteAttribute	Undo command for deleting attri of a vector layer in transaction group.
QgsVectorLayerUndoPassthroughCommandDeleteFeatures	Undo command for deleting features from a vector layer in transaction group.
QgsVectorLayerUndoPassthroughCommandRenameAttribute	Undo command for deleting attri of a vector layer in transaction group.
QgsVectorLayerUndoPassthroughCommandUpdate	Undo command for running a specific sql query in transaction group.

Methods

errorMessage	Returns the error message or an empty string if there's none.
hasError	Returns error status
rollBackToSavePoint	Rollback command, release savepoint or set error status save point must be set prior to call error satus should be False prior to call
setError	Set error flag and append "failed" to text
setErrorMessage	Sets the error message.
setSavePoint	Set the command savepoint or set error status.

class qgis.core.QgsVectorLayerUndoPassthroughCommand

Bases: QgsVectorLayerUndoCommand

__init__(buffer: QgsVectorLayerEditBuffer | None, text: str | None, autocreate: bool = True)

Constructor for QgsVectorLayerUndoPassthroughCommand

Parameters:

• buffer (Optional[QgsVectorLayerEditBuffer]) – associated edit buffer

• text (Optional[str]) – text associated with command

• autocreate (bool = True) – flag allowing to automatically create a savepoint if necessary

errorMessage(self) → str

Returns the error message or an empty string if there’s none.

Return type:

str

hasError(self) → bool

Returns error status

Return type:

bool

rollBackToSavePoint(self) → bool

Rollback command, release savepoint or set error status save point must be set prior to call error satus should be False prior to call

Return type:

bool

setError(self)

Set error flag and append “failed” to text

setErrorMessage(self, errorMessage: str | None)

Sets the error message.

Parameters:

errorMessage (Optional[str])

setSavePoint(self, savePointId: str | None = '') → bool

Set the command savepoint or set error status. Error satus should be False prior to call. If the savepoint given in parameter is empty, then a new one is created if none is currently available in the transaction.

Parameters:

savePointId (Optional[str] = '')

Return type:

bool