Class: QgsVectorLayerUndoPassthroughCommand

class qgis.core.QgsVectorLayerUndoPassthroughCommand(buffer: QgsVectorLayerEditBuffer, text: str, autocreate: bool = True)

Bases: qgis._core.QgsVectorLayerUndoCommand

Constructor for QgsVectorLayerUndoPassthroughCommand

Parameters:
  • buffer – associated edit buffer
  • text – text associated with command
  • autocreate – flag allowing to automatically create a savepoint if necessary

Undo command for vector layer in transaction group mode.

New in version 3.0: 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.

Signals

Attributes

errorMessage(self) → str

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

New in version 3.0.

hasError(self) → bool

Returns error status

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

setError(self)

Set error flag and append “failed” to text

setErrorMessage(self, errorMessage: str)

Sets the error message.

New in version 3.0.

setSavePoint(self, savePointId: str = '') → 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.