Valide

Installation

Valide is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "Valide"

Usage

From your ViewController set up everything first. Start with the validation names for the fields.

struct ValidationNames {
    static let nameField: String = "nameField"
    static let emailField: String = "emailField"
    static let nonEmptyField: String = "nonEmptyField"
}

Set up the rules you need. (You can create your own rules as well). Fields can have multiple rules to adhere to.

let requiredRule = RequiredRule()
let emailRule = EmailRule()
let emptyFieldRule = NonEmptyFieldRule()
    
let minCharsRule = MinCharsRule()
minCharsRule.minChars = 3
    
let maxCharsRule = MaxCharsRule()
maxCharsRule.maxChars = 50

Set validation name to field and add rules:

self.name.validationName = ValidationNames.nameField
self.name.addRule(requiredRule)
self.name.addRule(minCharsRule)
self.name.addRule(maxCharsRule)

self.emailField.validationName = ValidationNames.emailField
self.emailField.addRule(requiredRule)
self.emailField.addRule(emailRule)

self.nonEmptyField.validationName = ValidationNames.nonEmptyField
self.nonEmptyField.addRule(emptyFieldRule)
self.nonEmptyField.addRule(requiredRule)

When handling validation, usually by pressing a button, call the validate() method. This returns a closure with a success and error.

Upon receiving an error, the name of the field is returned as well as the error defined in the *Rule file. These can also be customised to your liking.

self.name.validate({
        print("namefield validates")
    }, error: { (validationName, error) -> () in
        print("\(validationName) handle: \(error)")
})
    
self.emailField.validate({
        print("emailField validates")
    }, error: { (validationName, error) -> () in
        print("\(validationName) handle: \(error)")
})
    
self.nonEmptyField.validate({
        print("nonEmptyField validates")
    }, error: { (validationName, error) -> () in
        print("\(validationName) handle: \(error)")
})

For now; start with validating of the last element in your UI. So the last validation you code, is the first element on screen. I have not found a better way to do this. (If you do - please let me know)

You can then check the .isValid() on the field you are validating. This returns a tuple with three properties.

func isValid() -> (isValid:Bool, validationName: String, error: String?)

So then you can check self.nonEmptyField.isValid().isValid property.

if self.nonEmptyField.isValid().isValid {
	print("Field validates!")
	// Do something...
}

Author

Sidney de Koning, [email protected]

License

Valide is available under the MIT license. See the LICENSE file for more info.