main-validator.dart

class Validator {

  String text; ///the text to validate. This will be the controller.text value
  TypesValidator _validator;  //the validation object where we'll define our rules on
  DataType type;  ///the object that will do the validation for us 

  Validator(this.text,this.type){
    _validator = new TypesValidator(text,type);   //initialise the object to do validation
    this.create();    //define the rules to our validator object which will be a singleton that will handle multi-validation
  }

  TypesValidator get validator => _validator;   //a get to access the validation object

  TypesValidator create(){

    _validator.ruleFor('name', ()=>text)
        ..notEmpty()
        ..withMessage('Please enter a name')
        ..length(2, 30)
        ..withMessage('Please enter a reasonable name');

    _validator.ruleFor('email', ()=>text)
        ..notEmpty()
        ..withMessage('Email cannot be empty')
        ..emailAddress()
        ..withMessage('Enter a valid email');

    _validator.ruleFor('text', ()=>text)
        ..notEmpty()
        ..withMessage('Cannot be empty');

    _validator.ruleFor('phone', ()=>text)
        ..notEmpty()
        ..withMessage('Phone number cannot be empty')
        ..matches('[0-9]{0,14}\$')
        ..withMessage('Phone number doesn\'t seem correct');

    _validator.ruleFor('int', ()=>text)
        ..matches('(?<=\\s|^)[-+]?\\d+(?=\\s|\$)')
        ..withMessage('Enter a valid number');
    
        
    return _validator;

  }