Assimalign.Extensions.Validation 1.0.0-pre.1.0.4

Assimalign Extensions Validation

• Assimalign ComponentModel Fluent Validation
• Concepts
• Getting Started
  • 1. Creating a Validation Profile
  • 2. Building a Validator
  • 3. Running Validation

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Concepts

To create a cleaner implementation to fluent validation and allow for better extensibility.

The key pattern of encapsulation follows this flow:

           Validator
(encapsulates) └─> Validation Profiles 
                            └─> Validation Items
                                        └─> Validation Rules

• Validator: The instance running the validation.
• Validation Profile: The configurable object which describes the validation items and rules.
• Validation Item: The item being described for validation. (This is usually the member or field of a Type)
• Validation Rule: The rules to be applied for a specific validation item.

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Getting Started

1. Creating a Validation Profile

First create a type and define the validation rules with the built ValidationProfile.

public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public DateTime Birthday { get; set; }
}


public class PersonValidationProfile : ValidationProfile<Person>
{

    public PersonValidationProfile()
    {
        // Specify that the validation stop of first failure
        base.ValidationMode = ValidationMode.Stop;
    }


    public override void Configure(IValidationRuleDescriptor<Person> descriptor)
    {
        descriptor.RuleFor(p => p.FirstName)
            .NotEmpty()
            .MaxLength(255);

        descriptor.RuleFor(p => p.LastName)
            .NotEmpty()
            .MaxLength(255);

        descriptor.RuleFor(p => p.Birthday)
            .LessThan(DateTime.Now)
            .NotEqual(default(DateTime));
    }
}

2. Building a Validator

Build a validator by passing the the

var validator = Validator.Create(options => 
{
    // Optional configurations
    options.ThrowExceptionOnFailure = true; 

    // Required Configurations
    options.AddProfile(new PersonValidationProfile());
});

3. Running Validation

Instantiate the type and pass it through the validator

var person = new Person() 
{
    FirstName = "Chase",
    LastName = "Crawford",
    Birthday = default(DateTime)
};

var validationResults = validator.Validate(person);