Dejavu Docs

Validation Rules

RevoValidation provides a comprehensive set of validation rules that can be used individually or combined using the pipe (| ) separator.

Example Usage

Using String Literal Syntax:

// Combine multiple rules using pipe separator
let rules: Rules = "required|email|length:5"

// Validate a string
let result = rules.validate("user@example.com")

// Check if valid
if result.count == 0 {
    print("Validation passed!")
} else {
    print("Errors: \(result.errorMessage)")
}

Copied!

Using Rule Classes Programmatically:

// Create a rule instance
let requiredRule = RuleRequired()

// Validate a string
let isValid = requiredRule.isValid("some text")

if isValid {
    print("Validation passed!")
} else {
    print("Error: \(requiredRule.errorMessage)")
}

// Combine multiple rules
let rules = Rules([
    RuleRequired(),
    RuleEmail(),
    RuleLenght(6)
])

let validationResult = rules.validate("user@example.com")

Copied!

Basic Rules

required

Ensures the field is not empty.

email

Validates that the value is a valid email address format.

url

Validates that the value is a valid URL format.

numeric

Validates that the value contains only numeric characters.

Length and Format Rules

length:6

Validates that the value has a minimum length. Replace 6 with your desired minimum length.

regexp:pattern

Validates that the value matches a custom regular expression pattern.

Character Rules

containsNumber

Validates that the value contains at least one numeric character.

containsSpecialChars

Validates that the value contains at least one special character (non-alphanumeric).

Date and Age Rules

age:18

Validates that the date value represents an age of at least the specified years. Replace 18 with your desired minimum age.

Uniqueness Rules

unique:value1,value2

Validates that the value is not in the provided comma-separated list of existing values.

National Identification Rules

nif:ES

Validates a National Identification Number (NIF) for the specified country. Supported countries: ES (Spain), PT (Portugal), DO (Dominican Republic).

Combining Rules

required|email|length:5

Combine multiple rules using the pipe (| ) separator. All rules must pass for validation to succeed.

required+email

Use the plus (+ ) separator to create combined rules that are evaluated together.