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https://issues.apache.org/jira/browse/AIRFLOW-881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bolke de Bruin resolved AIRFLOW-881.
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Resolution: Fixed
Fix Version/s: 1.9.0
Issue resolved by pull request #2087
[https://github.com/apache/incubator-airflow/pull/2087]
> 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
> 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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