[GitHub] [airflow] uranusjr commented on issue #26016: Allow template resolution of a upstream string passed via XComArg

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

uranusjr commented on issue #26016:
URL: https://github.com/apache/airflow/issues/26016#issuecomment-1230382822

   In 2.4.0 we’ll roll out some helper methods to transform XCom values, specifically there’s `map()` that can be used to iterate through the list of values. So if we provide a helper function to render a template file, you could write something like
   
   ```python
   # Illustrative only, actual module and function to be implemented.
   from airflow.utils.templates import render_as_template
   
   @task
   def return_templates():
      return [
         'This is a template {{ ds }}',
         'this_is_a_template.sql'
      ]
   
   SnowflakeOperator.partial(task_id='run_sql_files').expand(
       return_templates().map(render_as_template)
   )
   ```
   
   Would this make sense?


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