Bring your towel and join one of the fastest growing data communities. Welcome to our second-generation open source orchestration platform, a completely rethought approach to dataflow automation.

Prefect Community

Hi All, Is there way to start a new flow using automations? I am looking to trigger a flow B when flow A has finished.

Yeah! The thread above has an answer <https://prefect-community.slack.com/archives/CL09KU1K7/p1651081351268169?thread_ts=1651081281.066399&amp;cid=CL09KU1K7|here>

Screen Shot 2022-04-27 at 2.00.11 PM.png

image.png

it's Automations day :smile: for simple use case you can do that purely from the UI

I think that might be of the same Flow though? And Milly wants another Flow

wait, Automations is a total overkill here. Why don't you just create a flow of flows using create_flow_run + wait_for_flow_run?

we have plenty of examples <https://discourse.prefect.io/tag/flow-of-flows|here>

one example
```from prefect import Flow
from prefect.storage import GitHub
from prefect.tasks.prefect import create_flow_run, wait_for_flow_run
from prefect.run_configs import LocalRun

FLOW_NAME = "04_orchestrating_flow"
STORAGE = GitHub(
    repo="anna-geller/flow-of-flows",
    path=f"flows/{FLOW_NAME}.py",
    access_token_secret="GITHUB_ACCESS_TOKEN",
)
PROJECT_NAME = "jaffle_shop"


with Flow(FLOW_NAME, storage=STORAGE, run_config=LocalRun(labels=["dev"])) as flow:
    extract_load_id = create_flow_run(
        flow_name="01_extract_load",
        project_name=PROJECT_NAME,
        task_args={"name": "Staging"},
    )
    extract_load_wait_task = wait_for_flow_run(
        extract_load_id, raise_final_state=True, task_args={"name": "Staging - wait"}
    )

    transform_id = create_flow_run(
        flow_name="02_dbt",
        project_name=PROJECT_NAME,
        raise_final_state=True,
        task_args={"name": "DBT flow"},
    )
    transform_id_wait_task = wait_for_flow_run(
        transform_id, raise_final_state=True, task_args={"name": "DBT flow - wait"}
    )
    extract_load_wait_task.set_downstream(transform_id)

    dashboards_id = create_flow_run(
        flow_name="03_dashboards",
        project_name=PROJECT_NAME,
        task_args={"name": "Dashboards"},
    )
    dashboards_wait_task = wait_for_flow_run(
        dashboards_id, raise_final_state=True, task_args={"name": "Dashboards - wait"}
    )
    transform_id_wait_task.set_downstream(dashboards_id)```

<@U02H1A95XDW> I appreciate your response but if i wanted to call flow in a flow with the API I would have done that so. If you look at my question I asked about automations.

I was genuinely just trying to help :slightly_smiling_face: both Automation and `create_flow_run` work via an API call under the hood

`create_flow_run` and setting it in a flow of flows seems a bit easier to configure and easier to troubleshoot