func validate() {
    do {
        let email = try emailTextField.validatedText(validationType: ValidatorType.email)
        let username = try usernameTextField.validatedText(validationType: ValidatorType.username)
        let age = try self.ageTextField.validatedText(validationType: ValidatorType.age)
        let password = try passwordTextField.validatedText(validationType: ValidatorType.password)
        let projectId = try projectIdTextField.validatedText(validationType: ValidatorType.projectIdentifier)
        let department = try self.departmentTextField.validatedText(validationType: .requiredField(field: "Department"))
        let data = RegisterData(email: email, password: password, username: username, projectID: projectId, department: department, age: Int(age)!)
        save(data)
    } catch(let error) {
        showAlert(for: (error as! ValidationError).message)
    }
}