Validator.String

Validators for strings.

Validators

notEmpty : String -> Validator String String

Checks if a string is empty (white spaces allowed).

notBlank : String -> Validator String String

Checks if a string is empty (white spaces are not allowed).

isEmail : String -> Validator String String

Checks if a string is valid email. This validator works for most emails, but it is not 100%.

isPhoneJp : String -> Validator String String

Checks if a string is a valid Japanese phone number.

Note: I only added japanese regex, because that's what I use, but you can easily use your own regex, or send me a Pull Request.

isUrl : String -> Validator String String

Checks if a string is valid URL.

hasLetter : String -> Validator String String

Checks if a string contains at least one letter.

letterOnly : String -> Validator String String

Checks if a string only contains letters (white spaces are not allowed).

hasNumber : String -> Validator String String

Checks if a string contains at least one number.

numberOnly : String -> Validator String String

Checks if a string only contains numbers.

minLength : String -> Int -> Validator String String

Checks if a string is longer than or equal to a given value.

maxLength : String -> Int -> Validator String String

Checks if a string is shorter than or equal to a given value.

regexValidator : String -> Maybe Regex -> String -> Validated String

Custom string validator using a regular expression.

isInt : String -> String -> Validated Int

Checks if a string can be casted to an integer, and if so, it returns the value.

isFloat : String -> String -> Validated Float

Checks if a string can be casted to a float and if so, it returns the value.