Fix trigger ui enum parameter field is a dictionary when param.value is null#58682
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pierrejeambrun merged 1 commit intoapache:mainfrom Dec 1, 2025
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* return 'null' when param.value is null, rather than typeof(null) * added 'null' to list of enum types
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Looks good to me, thanks
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Backport successfully created: v3-1-test
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Closes: #56427
Problem
When an Enum is used as a parameter in a DAG definition with no default value (or any Param, with no value or type), the field is rendered as a dictionary which might be confusing.
This is the trigger form's parameters with an enum with no default values, and an empty paramter.
Solution
Now the enum is a drop down, and the empty parameter is a string field
This solves the enum issue, and addresses null values, yet I am unsure if this should be the intended behavior when handling missing default values. Browsing the docs, Param either has default value, or a type defined.
Anyway, I'm open to ideas!