[jira] [Updated] (AIRFLOW-881) Create SubDagOperator within DAG context manager without passing dag param

["Aizhamal Nurmamat kyzy (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AIRFLOW-881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Aizhamal Nurmamat kyzy updated AIRFLOW-881:
-------------------------------------------
    Labels: subdag  (was: )

Adding 'operators' component and 'subdag' label for component refactor.

> Create SubDagOperator within DAG context manager without passing dag param
> --------------------------------------------------------------------------
>
>                 Key: AIRFLOW-881
>                 URL: https://issues.apache.org/jira/browse/AIRFLOW-881
>             Project: Apache Airflow
>          Issue Type: Improvement
>          Components: operators, subdag
>            Reporter: Daniel Huang
>            Assignee: Daniel Huang
>            Priority: Trivial
>              Labels: subdag
>             Fix For: 1.9.0
>
>
> Currently, the following raises a {{Please pass in the `dag` param}} exception:
> {code}
> with DAG('my_dag', default_args=default_args) as dag:
>     op = SubDagOperator(task_id='my_subdag', subdag=subdag_factory(...))
> {code}
> But the SubDagOperator should be aware if it's in the context manager of a dag without having to specify {{dag=dag}} when initializing the operator. Similar to how the {{@apply_defaults}} decorator does it (https://github.com/apache/incubator-airflow/blob/fb0c5775cda4f84c07d8d5c0e6277fc387c172e6/airflow/utils/decorators.py#L50).



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