Class: QgsVectorLayerUndoPassthroughCommandChangeAttribute

class qgis.core.QgsVectorLayerUndoPassthroughCommandChangeAttribute(buffer: QgsVectorLayerEditBuffer, fid: int, field: int, newValue: Any)

Bases: QgsVectorLayerUndoPassthroughCommand

Constructor for QgsVectorLayerUndoPassthroughCommandChangeAttribute

Parameters
  • buffer – associated edit buffer

  • fid – feature ID of feature

  • field

  • newValue

Undo command for changing attr value from a vector layer in transaction group.

Methods

errorMessage

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

redo

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.

undo

errorMessage(self)str

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

New in version 3.0.

redo(self)
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.

undo(self)