flunt_dart 0.2.0

Library that provides a fluent way to use Notification Pattern.

Flunt-dart

Library that provides a fluent way to use Notification Pattern. It is based on Flunt.

Usage

Create a contract

Create a contract for a attribute ou a class.

class Customer {
  final String firstName;
  final String lastName;

  Customer(this.firstName, this.lastName);
}

class NameContract extends Contract<String> {
  NameContract(String value, String name) : super(value, name) {
      isNotEmpty("not should be empty");
      hasMaxLen(40, "should have no more than 40 chars");
      hasMinLen(3, "should have at least 3 chars");
  }
}

class CustomerContract extends Contract<Customer> {
  CustomerContract(
    Customer customer,
  ) : super(customer, "Customer") {
    addNotifiable(NameContract(customer.firstName, "First Name"));
    addNotifiable(NameContract(customer.lastName, "Last Name"));
  }
}

Use the contract

  var customer = Customer("Pedro", "Bissonho");
  var customerContract = CustomerContract(customer);

  if (customerContract.valid) {
    // The customer is valid and can be used.
  }