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Schematics schema should take custom validation functions #12705
Description
Activity
As I understand schematics uses
inquirerinside. We could usevalidationproperty with reference to a file and a function. And call it after json schema validation pass."x-prompt": { "message": "Insert a name", "validate": "./validation#checkNameUniqness" },Function should accept options that was inserted by user before.
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Bug Report or Feature Request (mark with an
x)Desired functionality
I would like to be able to specify validation functions for options of a schematic in the schema. JSON Schema does have some built-in validation, but this doesn't cover everything.
Here are a couple of examples that are not covered by JSON Schema:
A workaround is to perform this type of validation within the schematic function itself, however, this is not the best possible user experience when using the prompt system. As a user, I would expect my input to be validated as I enter it, then re-prompted for if necessary. With this workaround, a user would need to re-invoke the program from the beginning if their input is found invalid within the schematic function.