betodealmeida commented on a change in pull request #4651: [explore] proper
filtering of NULLs and ''
URL:
https://github.com/apache/incubator-superset/pull/4651#discussion_r181228007
##########
File path: superset/connectors/base/models.py
##########
@@ -185,6 +186,34 @@ def data(self):
'verbose_map': verbose_map,
}
+ @staticmethod
+ def filter_values_handler(
+ values, target_column_is_numeric=False, is_list_target=False):
+ def handle_single_value(v):
+ # backward compatibility with previous <select> components
+ if isinstance(v, basestring):
+ v = v.strip().strip("'").strip('"')
+ if target_column_is_numeric:
+ # For backwards compatibility and edge cases
+ # where a column data type might have changed
+ v = utils.string_to_num(v)
+ if v == '<NULL>':
+ return None
+ elif v == '<empty string>':
+ return ''
+ return v
+ if isinstance(values, (list, tuple)):
+ values = [handle_single_value(v) for v in values]
+ values = handle_single_value(values)
+ if is_list_target and not isinstance(values, (tuple, list)):
+ values = [values]
Review comment:
What if `is_list_target` is true but `values` is a tuple? In this case it
would return a tuple, is that ok?
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