joi-decimal

Joi extension for Decimal type.

Useful to validate any scientific / financial number.

⚠️ do not use .precision() for now as it doesn't work as expected. It will be fixed in v1.2.0.

Usage

const BaseJoi = require('@hapi/joi');
const DecimalExtension = require('joi-decimal');
const Joi = BaseJoi.extend(DecimalExtension);
 
const schema = Joi.decimal().greater(100.0);
 
const result = schema.validate(101.00);
// result.error === null -> valid

API

• decimal - inherits from Any
  • decimal.finite()
  • decimal.greater(limit)
  • decimal.integer()
  • decimal.less(limit)
  • decimal.max(limit)
  • decimal.min(limit)
  • decimal.multiple(base)
  • decimal.nan()
  • decimal.negative()
  • decimal.positive()
  • decimal.precision(sd, rm)
  • decimal.zero()
• List of errors
  • decimal.base
  • decimal.finite
  • decimal.greater
  • decimal.integer
  • decimal.less
  • decimal.max
  • decimal.min
  • decimal.multiple
  • decimal.nan
  • decimal.only
  • decimal.negative
  • decimal.positive
  • decimal.precision
  • decimal.ref
  • decimal.zero

decimal - inherits from Any

Generates a schema object that matches a Decimal type (as well as a JavaScript string or number that can be converted to Decimal type). If the validation convert option is on (enabled by default), a string or number will be converted to a Decimal, if specified. Also, if convert is on and decimal.precision() is used, the value will be converted to the specified precision as well.

const dec = Joi.decimal();
dec.validate('0.046875', (err, value) => { });

Possible validation errors: decimal.base

decimal.finite()

Requires the number to be finite.

const schema = Joi.decimal().finite();

Possible validation errors: decimal.finite

decimal.greater(limit)

Specifies that the value must be greater than limit or a reference.

const schema = Joi.decimal().greater(5.000);

const schema = Joi.object({
  min: Joi.decimal().required(),
  max: Joi.decimal().greater(Joi.ref('min')).required()
});

Possible validation errors: decimal.greater, decimal.ref

decimal.integer()

Requires the number to be an integer (no floating point).

const schema = Joi.decimal().integer();

Possible validation errors: decimal.integer

decimal.less(limit)

Specifies that the value must be less than limit or a reference.

const schema = Joi.decimal().less(10);

const schema = Joi.object({
  min: Joi.decimal().less(Joi.ref('max')).required(),
  max: Joi.decimal().required()
});

Possible validation errors: decimal.less, decimal.ref

decimal.max(limit)

Specifies the maximum value where:

• limit - the maximum value allowed or a reference.

const schema = Joi.decimal().max(10);

const schema = Joi.object({
  min: Joi.decimal().max(Joi.ref('max')).required(),
  max: Joi.decimal().required()
});

Possible validation errors: decimal.max, decimal.ref

decimal.min(limit)

Specifies the minimum value where:

• limit - the minimum value allowed or a reference.

const schema = Joi.decimal().min(2);

const schema = Joi.object({
  min: Joi.decimal().required(),
  max: Joi.decimal().min(Joi.ref('min')).required()
});

Possible validation errors: decimal.min, decimal.ref

decimal.multiple(base)

Specifies that the value must be a multiple of base (or a reference):

const schema = Joi.decimal().multiple(3);

Possible validation errors: decimal.multiple, decimal.ref

decimal.nan()

Requires the number to be NaN.

const schema = Joi.decimal().nan();

Possible validation errors: decimal.nan

decimal.negative()

Requires the number to be negative.

const schema = Joi.decimal().negative();

Possible validation errors: decimal.negative

decimal.positive()

Requires the number to be positive.

const schema = Joi.decimal().positive();

Possible validation errors: decimal.positive

decimal.precision(sd, rm)

Specifies the maximum precision where:

• sd - the number of significant digits on which to round.
• rm - the rounding mode to use.

const schema = Joi.decimal().precision(2, 5);

Possible validation errors: decimal.precision

decimal.zero()

Requires the number to be zero.

const schema = Joi.decimal().zero();

Possible validation errors: decimal.zero

List of errors

decimal.base

The value is not a Decimal or could not be cast to a Decimal.

decimal.finite

The number was not finite.

decimal.greater

The number is lower or equal to the limit that you set.

Additional local context properties:

{
    limit: number // Minimum value that was expected for this number
}

decimal.integer

The number is not a valid integer.

decimal.less

The number is higher or equal to the limit that you set.

Additional local context properties:

{
    limit: number // Maximum value that was expected for this number
}

decimal.max

The number is higher than the limit that you set.

Additional local context properties:

{
    limit: number // Maximum value that was expected for this number
}

decimal.min

The number is lower than the limit that you set.

Additional local context properties:

{
    limit: number // Minimum value that was expected for this number
}

decimal.multiple

The number could not be divided by the base you provided.

Additional local context properties:

{
    base: number // The number of which the input is supposed to be a multiple of
}

decimal.nan

The number is not NaN.

decimal.negative

The number was positive.

decimal.only

Only some values were allowed, the input didn't match any of them.

Additional local context properties:

{
    values: Array<any> // Contains the list of the valid values that were expected
}

decimal.positive

The number was negative.

decimal.precision

The arguments (sd and/or rm) are not numbers.

decimal.ref

A reference was used in one of decimal.greater(), decimal.less(), decimal.max(), decimal.min() or decimal.multiple() and the value pointed to by that reference in the input is not a valid Decimal or could not be cast to a Decimal.

decimal.zero

The number is not zero.