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I have a simple object with few fields that I would like to validate. I wish to allow or a specific validation schema or that all of the properties have empty values

I created the following two schemas:

 const nonEmptyUserInfoValidationSchema = Joi.object({
    url: Joi.string().uri().required(),
    username: Joi.string().required().min(usernameMinLength),
    password: Joi.string().required().min(passwordMinLength),
});

const emptyUserInfoValidationSchema = Joi.object({
    url: Joi.string().empty().required(),
    username: Joi.string().empty().required(),
    password: Joi.string().empty().required(),
});

I wish to create schema that validates if emptyUserInfoValidationSchema or nonEmptyUserInfoValidationSchema is applied but I can't figure out how to do it, any suggestions?

allowed:

{url:";, username:"some username", password:"some password"}
{url:"", username:"", password:""}

not allowed:

{url:";,  username:"", password:""}

I have a simple object with few fields that I would like to validate. I wish to allow or a specific validation schema or that all of the properties have empty values

I created the following two schemas:

 const nonEmptyUserInfoValidationSchema = Joi.object({
    url: Joi.string().uri().required(),
    username: Joi.string().required().min(usernameMinLength),
    password: Joi.string().required().min(passwordMinLength),
});

const emptyUserInfoValidationSchema = Joi.object({
    url: Joi.string().empty().required(),
    username: Joi.string().empty().required(),
    password: Joi.string().empty().required(),
});

I wish to create schema that validates if emptyUserInfoValidationSchema or nonEmptyUserInfoValidationSchema is applied but I can't figure out how to do it, any suggestions?

allowed:

{url:"http://some.url", username:"some username", password:"some password"}
{url:"", username:"", password:""}

not allowed:

{url:"http://some.url",  username:"", password:""}

• javascript
• typescript
• joi

Share Improve this question Follow edited Jan 4, 2022 at 19:17 jsejcksn 34k55 gold badges4949 silver badges7575 bronze badges asked Jan 4, 2022 at 18:55 Or YaacovOr Yaacov 3,89055 gold badges2828 silver badges5555 bronze badges

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3 Answers 3

Sorted by: Reset to default 5

Well I finally found what I was looking for joi.alternatives:

export const ansibleInfoValidationSchema = Joi.alternatives(emptyUserInfoValidationSchema , nonEmptyUserInfoValidationSchema );

seems to do the trick

I hope this helps you can use the when condition in Joi

var schema = Joi.object({
  url : Joi.any().when('username',{
    is: Joi.empty(),
    then: Joi.empty().required(),
    otherwise: Joi.string().required()
  }),
  username: Joi.when('password',{
    is: Joi.empty(),
    then: Joi.empty(),
    otherwise: Joi.string().required().min(usernameMinLength)
  })
});

here's a link to when docs Joi When Condtion

You use the .keys().and() to specify peers. This means that none of the fields specified in the .and() will exist without each other. Hence should be used as so:

const schema = Joi.object({
  url: Joi.string().uri(),
  username: Joi.string().min(usernameMinLength),
  password: Joi.string().min(passwordMinLength)
}).keys().and('url', 'username', 'password');

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