<@ULVA73B9P> I am trying to use `prefect deploymen...
# ask-marvin
c
@Marvin I am trying to use
prefect deployment run
to run a flow with the main parameter being an object named "request". How do I pass down the required object parameters?
m
To pass an object as a parameter when using
prefect deployment run
, you should follow these steps: 1. Define Parameters in the Flow: Ensure that your flow is defined to accept parameters, specifically a parameter named "request" in your case. This is done using the
parameters
argument in the flow definition. 2. Use Deployment CLI: When running the deployment using the CLI, you can pass parameters in JSON format. This allows you to structure complex objects, such as dictionaries, which can represent your "request" object. Here's a basic example:
Copy code
python
from prefect import flow

@flow
def my_flow(request):
    print(request)

# Assuming you have this flow deployed, you can run it using:
# prefect deployment run my-flow-deployment --param '{"request": {"key1": "value1", "key2": "value2"}}'
3. CLI Command: Use the
--param
flag followed by a JSON string to pass the parameters when you run the deployment. If your "request" object is complex, serialize it to JSON before passing it. For more details, check the Prefect documentation on deployments. If you have any specific issues with JSON serialization or parameter passing, let me know.
c
Can you give me an example CLI command?