How to dynamically set an object key in typescript

Question

How do I create a function where a key of an object is dynamically set from the function

export const validateObjectId = (key: string = 'id'): ObjectSchema => {
  return Joi.object({
    key: Joi.string()
      .regex(/^(?=[a-f\d]{24}$)(\d+[a-f]|[a-f]+\d)/i)
      .required(),
  });
};

how do I make the key be the key of the object

I don't understand, you're validating the key property on the object? — Celsiuss
– Celsiuss, Commented Jul 16, 2020 at 23:02

Gyimah Francis · Accepted Answer · 2020-07-16 23:35:07Z

1

I've been able to find a way out using the code snippet below

export const validateObjectId = (key: string = 'id'): ObjectSchema => {
  interface Obj {
    [key: string]: Object;
  }

  const object: Obj = {};

  object[key] = Joi.string()
    .regex(/^(?=[a-f\d]{24}$)(\d+[a-f]|[a-f]+\d)/i)
    .required();
  return Joi.object(object);
};

answered Jul 16, 2020 at 23:35

Gyimah Francis

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Comments

tooomg · Accepted Answer · 2020-07-17 00:04:43Z

1

Maybe you can try the following:

export const validateObjectId = (key: string = 'id'): ObjectSchema => {
    let object: any = {};
    object[key] = Joi.string()
          .regex(/^(?=[a-f\d]{24}$)(\d+[a-f]|[a-f]+\d)/i)
          .required();
    return Joi.object(object);
}

Cheers

edited Jul 17, 2020 at 0:04

answered Jul 16, 2020 at 23:07

tooomg

4692 silver badges7 bronze badges

1 Comment

tooomg Over a year ago

I just fixed a syntax error (made object of type any and removed the var before object[key] = ...), it should be typescript-compliant now. Let me know if it still doesn't work (and what the error is if that's the case)

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