Hi devs,
I'm struggling with a maybe simple issue..
In a plugin I have added a QgsFieldExpressionWidget connected to a
QgsMapLayerComboBox..
What I am currently trying to do without any result is to get a list of
the field values filtered with the result of the expression added
In a *normal* QgsFieldComboBox I achive it as follows:
# QgsMapLayerComboBox
lay1 = self.Field1.layer()
# QgsFieldComboBox
lay1_f = self.Field1.currentField()
# create the list of the selected fields
f1 = []
for i in lay1.getFeatures():
f1.append(i[lay1_f])
so f1 is a list of the selected filed..
In the API I saw that QgsFieldExpressionWidget returns a tuple
(Expression text, if expression is used, is expression is valid)..
the expression text is accessible with the currentText() method.. but if
I add an expression the above method doesn't work (e.g. if I try to
divide by 10 the field AAA:
KeyError
'AAA / 10'
so I'm not able to combine the expression added as filter for the field
Someone has any suggestions?
Thanks in advance
Cheers
Matteo
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