Dear QGIS Developer Community,I like to use a QgsExpressionContextGenerator to create the expression context for a QgsExpressionLineEdit. However, when executed in the QGIS python shell, the following code crashes my QGIS after clicking on the Expression builder widget:
from qgis.core import (
QgsExpressionContextGenerator,QgsExpressionContext,QgsExpressionContextUtils
)
from qgis.gui import QgsExpressionLineEdit
class Generator(QgsExpressionContextGenerator):
def __init__(self,*args,**kwds):
super(Generator,self).__init__(*args,**kwds)
def createExpressionContext(self)-> QgsExpressionContext:
context =
QgsExpressionContext([QgsExpressionContextUtils.globalScope()])
print(f'Generated QgsExpressionContext: {context}',flush=True)
return context
gen = Generator()
w = QgsExpressionLineEdit()
w.setExpression("'click edit button ->'")
w.registerExpressionContextGenerator(gen)
w.show()
# now click on edit button to produce a crash
grafik
Any suggestions how I can fix this?
Thanks, Benjamin
--
Benjamin Jakimow, Doctoral Researcher
Earth Observation Lab | Geography Department | Humboldt-Universität zu Berlin
e-mail: [email protected]
phone: +49 (0) 30 2093 6846
mobile: +49 (0) 157 5656 8477
fax: +49 (0) 30 2093 6848
mail: Unter den Linden 6 | 10099 Berlin | Germany
room: 2'211
web: https://hu-berlin.de/eo-lab
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