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Mitchell Bregman

01/14/2021, 4:19 PM
Hey there, is this possible? I want to default out another parameters based on a previous parameter. In this example, let’s say 
x
is a string and I want to 
.lower()
it.
Copy code
flow = Flow("some flow")
with flow:
    x = Parameter("x")
    y = Parameter("y", default=x.foo())
The use case I will be doing this for is date specification and building dynamic dates based on a main driving parameter
z

Zanie

01/14/2021, 4:26 PM
Hmm, parameter values need to be serializable so I don’t think you can set a default that’s dependent on a runtime value like this.
Is there a case where you’d want the user to be able to configure 
y
independently of 
x
? If you want to have 
y
be based on 
x
you can just use a normal task
m

Mitchell Bregman

01/14/2021, 4:30 PM
yeah, thats what I will end up doing
thanks so much, was just curious
but yes, there is a case where 
y
can be independent…. i will just have some handling around that
and default 
y
to None
z

Zanie

01/14/2021, 4:31 PM
No problem! It’d be cool if we could take callables there but since we need to display defaults in the UI and such it becomes a bit of a security concern to execute the code on our end.
@Jim Crist-Harif — perhaps a possible use-case for the “secure execution” model 🙂
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