Bug report #20723
QgsVectorLayer.featuresDeleted signal not emitted when deleting features programatically
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: | - | ||
| Category: | Python bindings / sipify | ||
| Affected QGIS version: | 3.4.2 | Regression?: | No |
| Operating System: | Windows 10 | Easy fix?: | No |
| Pull Request or Patch supplied: | No | Resolution: | invalid |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 28543 |
Description
The following Python code doesn't log any messages:
def this_is_a_test():
QgsMessageLog.logMessage('this is a test')
iface.activeLayer().featuresDeleted.connect(this_is_a_test)
iface.activeLayer().dataProvider().deleteFeatures([1])
History
#1
Updated by Alessandro Pasotti about 6 years ago
- Resolution set to invalid
- Status changed from Open to Closed
If you use directly the data provider you have no signals, the recommended way is using the editing buffer:
iface.activeLayer().startEditing() iface.activeLayer().dataProvider().deleteFeatures([1]) iface.activeLayer().commitChanges()
Also, check the signature of the signal: it sends a QSet of feature ids.