CODEWITHSUNDEEP
node.jsmongoosejoi
Ravi Singh
Ravi Singh

Reputation: 1119

How can I validate "number of digits" from joi using nodejs?

i want that if the number of digits in the input field in less/more than 14(for example) then joi should return an error.

how can i do this with the type of number not for string.

Upvotes: 13

Views: 56385

Answers (10)

Muhammad Fatkurozi
Muhammad Fatkurozi

Reputation: 31

Pass value with the string type, and use these schema rules:

Joi.string().length(14).required()

Upvotes: 1

Владимир Ефанов
Владимир Ефанов

Reputation: 681

You can use custom validator

Joi.object({
phone: Joi
    .string()
    .custom((value, helper) => {
        // you can use any libs for check phone
        if (!checkPhone(value)) {
            return helper.message("phone is incorrect"); 
        } // this is what was added
        return value

    })
}).validate({
   phone: '+79002940163'
});

Docs: https://github.com/hapijs/joi/blob/master/API.md#anycustommethod-description

Upvotes: 4

pati51
pati51

Reputation: 315

For Mobile number:

mobile: Joi.number().integer().min(10 ** 9).max(10 ** 10 - 1).required().messages({
        'number.min': 'Mobile number should be 10 digit.',
        'number.max': 'Mobile number should be 10 digit'
    })

For other digit check:

yourparam: Joi.number().integer().min(1000).max(9999).required().messages({
        'number.min': 'OTP should be 4 digit.',
        'number.max': 'OTP should be 4 digit'
    })

Upvotes: 3

Anas Ali
Anas Ali

Reputation: 87

minCount: Joi.number().strict()

if you are using @hapi/joi

Upvotes: 1

Diego
Diego

Reputation: 558

Joi converts strings if it can by default, that's all in the documentation. Globally disable convert or use strict on that specific schema.

Upvotes: 0

Manoj Rana
Manoj Rana

Reputation: 3450

Validation for 10 digit numeric mobile number with custom error message are given below

joi.string().regex(/^[0-9]{10}$/).messages({'string.pattern.base': `Phone number must have 10 digits.`}).required()

Upvotes: 4

waseem asgar
waseem asgar

Reputation: 742

Validation for 10 digit numeric mobile number are given below

joi.string().length(10).pattern(/^[0-9]+$/).required(),

You should change the rule as per your requirement. pattern(your regex) is used to accept only digits, length() is used to validate how many character validation accepts and only work with string function.

Upvotes: 19

JimblyJambles
JimblyJambles

Reputation: 129

Unfortunately, Hapi/joi doesn't presently have a digit count check for numbers. While Sachin Shah is correct that you must convert the number to a string, you must also pass a regex to the validator to ensure that only numeric values are allowed:

joi.string().length(14).regex(/^\d+$/)

Upvotes: 3

Sachin Shah
Sachin Shah

Reputation: 4533

You can use it's min and max methods. 

joi.number().min(14)
joi.number().max(14)

If it's fine with string then you can do this also. 

joi.string().length(14).required()

And while you read the data for db operation, you can use + with value. It will convert your string into integer. But make sure your db allows this big value as a integer if database is mysql. I suggest you to user string as a data type. 

let obj = {
    number: +req.body.number
}

Upvotes: -3

udhaya kumar
udhaya kumar

Reputation: 136

For example birth_year an integer between 1900 and 2013

birth_year: Joi.number()
        .integer()
        .min(1900)
        .max(2013)

You can use like this for number with joi. For reference Official Readme

Like this u can pass your min and max values to validate

Upvotes: 0

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