Avoid crash when relation disappears (#7624)

m-kuhn · 3nids · commit c4eb57d0c6fd · 2018-08-15T14:54:40.000+02:00
diff --git a/src/gui/editorwidgets/qgsrelationwidgetwrapper.cpp b/src/gui/editorwidgets/qgsrelationwidgetwrapper.cpp
@@ -48,6 +48,9 @@ void QgsRelationWidgetWrapper::setVisible( bool visible )
 
 void QgsRelationWidgetWrapper::aboutToSave()
 {
+  if ( !mRelation.isValid() )
+    return;
+
   // Calling isModified() will emit a beforeModifiedCheck()
   // signal that will make the embedded form to send any
   // outstanding widget changes to the edit buffer

Original file line number	Diff line number	Diff line change
`@@ -48,6 +48,9 @@ void QgsRelationWidgetWrapper::setVisible( bool visible )`
`48`	`48`
`49`	`49`	`void QgsRelationWidgetWrapper::aboutToSave()`
`50`	`50`	`{`
	`51`	`+ if ( !mRelation.isValid() )`
	`52`	`+ return;`
	`53`	`+`
`51`	`54`	`// Calling isModified() will emit a beforeModifiedCheck()`
`52`	`55`	`// signal that will make the embedded form to send any`
`53`	`56`	`// outstanding widget changes to the edit buffer`