[GitHub] mjsilva opened a new pull request #5547: Adds a new macro to allow getting filters and extra_filters value in an easy way

[GitBox <gi...@apache.org>]

mjsilva opened a new pull request #5547: Adds a new macro to allow getting filters and extra_filters value in an easy way
URL: https://github.com/apache/incubator-superset/pull/5547
 
 
   We've added a new macro `filter_values` to make it easy to grab the values of a filter box when writing dynamic filter dependent queries.
   
   Usage:
   ```
   SELECT action,
   count(*) as times
   FROM logs
   WHERE action in ( {{ filter_values('action_type') }} )
   GROUP BY 1
   ```
   
   Returns:
   ```
   SELECT action,
   count(*) as times
   FROM logs
   WHERE action in ( "foo", "bar" )
   GROUP BY 1
   ```
   
   When filter box is like this:
   ![sc 2018-08-02 at 8 42 35 pm](https://user-images.githubusercontent.com/158554/43579306-f23c0494-9694-11e8-8310-3e28a311f94e.png)
   

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