[processing] Fix exception from field wrappers when "selected feature…

…s only" is checked for a vector layer
qgis · Jun 25, 2019 · 4a4b922 · 4a4b922
1 parent efeb8b5
commit 4a4b922
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/python/plugins/processing/gui/wrappers.py b/python/plugins/processing/gui/wrappers.py
@@ -1541,11 +1541,12 @@ def postInitialize(self, wrappers):
 
     def parentValueChanged(self, wrapper):
         value = wrapper.parameterValue()
-        if value in self.parent_file_based_layers:
+        if isinstance(value, str) and value in self.parent_file_based_layers:
             self.setLayer(self.parent_file_based_layers[value])
         else:
             self.setLayer(value)
-            self.parent_file_based_layers[value] = self._layer
+            if isinstance(value, str):
+                self.parent_file_based_layers[value] = self._layer
 
     def setLayer(self, layer):
         if isinstance(layer, QgsProcessingFeatureSourceDefinition):