d9k opened a new issue, #20991:
URL: https://github.com/apache/superset/issues/20991
#### How to reproduce the bug
`superset_config_docker.py`:
```
def filter_value_first(
self, column: str, default = None, remove_filter: bool = False
):
return self.filter_values(column, default, remove_filter)[0]
JINJA_CONTEXT_ADDONS = {
"filter_value_first": filter_value_first,
}
```
sql query template:
```
{% set val = filter_value_first('my_filter') %}
```
### Expected results
`filter_value_first` returns first value from filter.
### Actual results
Error:
```
filter_value_first() missing 1 required positional argument: 'column'
```
### Environment
(please complete the following information):
- superset version: `1.5.0rc4`
### Additional context
So I can't use `self` argument.
How can I get existing jinja template processor object in `my
filter_value_first()` function?
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