Hi,
I found that our Django vector provider written in Python does not
work anymore with QGIS 3.12.2
and Python 3.7.
I found that the problem is in QgsAbstractFeatureSource
implementation, this does not work anymore:
def getFeatures(self, request):
return QgsFeatureIterator(MyFeatureIterator(self))
It works if I keep reference to either MyFeatureIterator or
QgsFeatureIterator, both work:
def getFeatures(self, request):
self.iterator = MyFeatureIterator(self)
return QgsFeatureIterator(self.iterator )
def getFeatures(self, request):
self.iterator = QgsFeatureIterator(MyFeatureIterator(self))
return self.iterator
Any idea why it is not working and how to implement it without keeping
reference to every new iterator?
Provider source code: https://github.com/MPASolutions/django-provider
Radim
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