Decimal

Use decimal validation when you need base-10 precision (for example money and amounts) and want to avoid binary floating-point rounding effects.

gt

Strictly greater than the specified number.

Parameters

• num: Decimal - exclusive lower bound
• message: ((Decimal) -> LocalizedStringResource)? - optional custom error message builder

let greaterThan = FormCraftValidationRules()
  .decimal()
  .gt(num: 10)

greaterThan.validate(value: 15) // ✅ is valid
greaterThan.validate(value: 5)  // ❌ is not valid

gte

Greater than or equal to the specified number.

Parameters

• num: Decimal - inclusive lower bound
• message: ((Decimal) -> LocalizedStringResource)? - optional custom error message builder

let greaterOrEqual = FormCraftValidationRules()
  .decimal()
  .gte(num: 10)

greaterOrEqual.validate(value: 10) // ✅ is valid
greaterOrEqual.validate(value: 5)  // ❌ is not valid

lt

Strictly less than the specified number.

Parameters

• num: Decimal - exclusive upper bound
• message: ((Decimal) -> LocalizedStringResource)? - optional custom error message builder

let lessThan = FormCraftValidationRules()
  .decimal()
  .lt(num: 100)

lessThan.validate(value: 50)   // ✅ is valid
lessThan.validate(value: 150)  // ❌ is not valid

lte

Less than or equal to the specified number.

Parameters

• num: Decimal - inclusive upper bound
• message: LocalizedStringResource? - error message if the value is greater

let lessOrEqual = FormCraftValidationRules()
  .decimal()
  .lte(num: 100)

lessOrEqual.validate(value: 100) // ✅ is valid
lessOrEqual.validate(value: 101) // ❌ is not valid

positive

Positive number (greater than zero).

Parameters

• message: LocalizedStringResource? - error message if the value is not positive

let positive = FormCraftValidationRules()
  .decimal()
  .positive()

positive.validate(value: 42)   // ✅ is valid
positive.validate(value: -10)  // ❌ is not valid

nonNegative

Zero or positive.

Parameters

• message: LocalizedStringResource? - error message if the value is negative

let nonNegative = FormCraftValidationRules()
  .decimal()
  .nonNegative()

nonNegative.validate(value: 0)   // ✅ is valid
nonNegative.validate(value: -1)  // ❌ is not valid

negative

Negative number (less than zero).

Parameters

• message: LocalizedStringResource? - error message if the value is not negative

let negative = FormCraftValidationRules()
  .decimal()
  .negative()

negative.validate(value: -5) // ✅ is valid
negative.validate(value: 5)  // ❌ is not valid

nonPositive

Zero or negative.

Parameters

• message: LocalizedStringResource? - error message if the value is positive

let nonPositive = FormCraftValidationRules()
  .decimal()
  .nonPositive()

nonPositive.validate(value: 0)  // ✅ is valid
nonPositive.validate(value: 10) // ❌ is not valid

multipleOf

Checks that the value is divisible by the specified multiplier.

Parameters

• mult: Decimal - multiplier (divisor). If zero, validation fails
• message: ((Decimal) -> LocalizedStringResource)? - optional custom error message builder

let multipleOf = FormCraftValidationRules()
  .decimal()
  .multipleOf(mult: 5)

multipleOf.validate(value: 20) // ✅ is valid
multipleOf.validate(value: 7)  // ❌ is not valid