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Make fields with const pre-fiiled and readonly #3843

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@linpc linpc commented Aug 26, 2023

Reasons for making this change

fixes #2600

If fields have const definition, make the value as pre-filled default and also make the fields readonly. (current logic will just ignore the const value and leave blank input for users.

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Checklist

  • I'm updating documentation
  • I'm adding or updating code
    • I've added and/or updated tests. I've run npm run test:update to update snapshots, if needed.
    • I've updated docs if needed
    • I've updated the changelog with a description of the PR
  • I'm adding a new feature
    • I've updated the playground with an example use of the feature

@@ -177,6 +185,8 @@ export function computeDefaults<T = any, S extends StrictRJSFSchema = RJSFSchema
defaults = mergeObjects(defaults!, schema.default as GenericObjectType) as T;
} else if (DEFAULT_KEY in schema) {
defaults = schema.default as unknown as T;
} else if (CONST_KEY in schema) {
defaults = schema.const as unknown as T;
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Const are different than defaults in that they should ALWAYS be set regardless of those values of the experimental_defaultFormStateBehavior.emptyObjectFields that restrict how defaults are set. I'm not entirely sure the best approach to updating maybeAddDefaultToObject() to understand the difference. I'm curious to see what you come up with. Maybe passing parentConsts along side of parentDefaults?

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Prefilled, readonly text field for const string types
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