fix sort value (Py3)
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1 changed files with 1 additions and 1 deletions
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@ -38,7 +38,7 @@ class RelationField(BaseRelationField):
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return self.getRawValue(row)
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def getSortValue(self, row):
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return self.getValue(row)
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return self.getValue(row) or ''
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def getExportValue(self, row, format=''):
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return self.getValue(row)
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