villebro commented on a change in pull request #14507:
URL: https://github.com/apache/superset/pull/14507#discussion_r628340951
##########
File path: superset/jinja_context.py
##########
@@ -213,6 +165,147 @@ def url_param(
self.cache_key_wrapper(result)
return result
+ def filter_values(
+ self, column: str, default: Optional[str] = None, remove_filter: bool
= True
+ ) -> List[str]:
+ """Gets a values for a particular filter as a list
+
+ This is useful if:
+ - you want to use a filter box to filter a query where the name of
filter
+ box column doesn't match the one in the select statement
+ - you want to have the ability for filter inside the main query
for speed
+ purposes
+
+ Usage example::
+
+ SELECT action, count(*) as times
+ FROM logs
+ WHERE
+ action in ({{ "'" + "','".join(filter_values('action_type')) +
"'" }})
+ GROUP BY action
+
+ :param column: column/filter name to lookup
+ :param default: default value to return if there's no matching columns
+ :param remove_filter:
+ flag indicating if superset should generate a condition for this
filter
+ :return: returns a list of filter values
+ """
+ from superset.views.utils import get_form_data
+
+ form_data, _ = get_form_data()
+ convert_legacy_filters_into_adhoc(form_data)
+ merge_extra_filters(form_data)
+
+ return_val = [
+ comparator
+ for filter in form_data.get("adhoc_filters", [])
+ for comparator in (
+ filter["comparator"]
+ if isinstance(filter["comparator"], list)
+ else [filter["comparator"]]
+ )
+ if (
+ filter.get("expressionType") == "SIMPLE"
+ and filter.get("clause") == "WHERE"
+ and filter.get("subject") == column
+ and filter.get("comparator")
+ )
+ ]
+
+ if return_val:
+ if remove_filter:
+ self.cache_key_wrapper({"filter_removed_by_vt": column})
Review comment:
I believe all filters are converted into adhoc filters that have a
unique id. IMO it would be optimal if we would collect the removed filter ids
in a dedicated `dict` on `ExtraCache` called `removed_filters` and then make it
possible to check if a filter has been removed or not without looping through
all extra cache keys.
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