Is there a way to get a context inside .default(() => {...}) ?

[AlimovSV]

The library allows specifying the context when using getDefault method:

schema.getDefault({
  context: { ... }
});

but I don't see any way to get a passed context inside the field.default(() => { ... } method. The whole example:

const schema =  Yup.object({
  from: Yup.string().default(() => moment().tz(>> get timezone here <<).startOf('day').toISOString()),
  until: Yup.string().default(() => moment().tz(>> get timezone here <<).endOf('day').toISOString()),
}),

schema.getDefault({ context: { timezone: 'UTC' });

// -->> should return `{ from: '...', until: '...' }` where from and until is a begin/end of day in UTC timezone

Please help, thanks for any advice!

[Edleychris]

Here's how you can modify your example to use the context:

const schema = Yup.object({ from: Yup.string().default((_, { context }) => moment().tz(context.timezone).startOf('day').toISOString()), until: Yup.string().default((_, { context }) => moment().tz(context.timezone).endOf('day').toISOString()), });

const defaultValues = schema.getDefault({ context: { timezone: 'UTC' }}); console.log(defaultValues); // { from: '2023-04-25T00:00:00.000Z', until: '2023-04-25T23:59:59.999Z' }

the default function takes two arguments: the first argument represents the value of the field (which is not used in this case), and the second argument represents the context object. The context.timezone property is used to get the timezone for the moment().tz() function calls. I hope this helps.

[AlimovSV]

@Edleychris thank you for your reply! Unfortunately, your code doesn't work for me (latest yup@1.1.1).

schema.getDefault({ context: { timezone: 'UTC' }});
Uncaught:
TypeError: Cannot destructure property 'context' of 'undefined' as it is undefined.
    at StringSchema.<anonymous> (REPL3:1:165)
    at StringSchema._getDefault (/Users/falcon/Repositories/gosource/parks/parks-products-frontend/node_modules/yup/index.js:796:62)
    at StringSchema.getDefault (/Users/falcon/Repositories/gosource/parks/parks-products-frontend/node_modules/yup/index.js:802:19)
    at /Users/falcon/Repositories/gosource/parks/parks-products-frontend/node_modules/yup/index.js:1793:57
    at Array.forEach (<anonymous>)
    at ObjectSchema._getDefault (/Users/falcon/Repositories/gosource/parks/parks-products-frontend/node_modules/yup/index.js:1783:17)
    at ObjectSchema.getDefault (/Users/falcon/Repositories/gosource/parks/parks-products-frontend/node_modules/yup/index.js:802:19)

In the master, I see that getDefault has been calling without any arguments: https://github.com/jquense/yup/blob/master/src/schema.ts#L610-L620 that explains why I see a null-reference error. What yup version did you try?

[AlimovSV]

Any news?

[AlimovSV]

@jquense Thank you very much, I hope this change will be released soon.