使用FluentValidation库自动进行属性验证过程 [英] Automate the validation process on properties using FluentValidation Library
本文介绍了使用FluentValidation库自动进行属性验证过程的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
很奇怪,有可能避免为每个需要验证的字段编写规则,例如,除Remarks
外,所有属性都必须经过验证.而且我在考虑避免为每个属性编写RuleFor
.
Wondering is there a possibility to avoid writing rules for every fields that needs to get validated, for an example all the properties must be validated except Remarks
. And I was thinking to avoid writing RuleFor
for every property.
public class CustomerDto
{
public int CustomerId { get; set; } //mandatory
public string CustomerName { get; set; } //mandatory
public DateTime DateOfBirth { get; set; } //mandatory
public decimal Salary { get; set; } //mandatory
public string Remarks { get; set; } //optional
}
public class CustomerValidator : AbstractValidator<CustomerDto>
{
public CustomerValidator()
{
RuleFor(x => x.CustomerId).NotEmpty();
RuleFor(x => x.CustomerName).NotEmpty();
RuleFor(x => x.DateOfBirth).NotEmpty();
RuleFor(x => x.Salary).NotEmpty();
}
}
推荐答案
在这里:
public class Validator<T> : AbstractValidator<T>
{
public Validator(Func<PropertyInfo, bool> filter) {
foreach (var propertyInfo in typeof(T)
.GetProperties()
.Where(filter)) {
var expression = CreateExpression(propertyInfo);
RuleFor(expression).NotEmpty();
}
}
private Expression<Func<T, object>> CreateExpression(PropertyInfo propertyInfo) {
var parameter = Expression.Parameter(typeof(T), "x");
var property = Expression.Property(parameter, propertyInfo);
var conversion = Expression.Convert(property, typeof(object));
var lambda = Expression.Lambda<Func<T, object>>(conversion, parameter);
return lambda;
}
}
它可以这样使用:
private static void ConfigAndTestFluent()
{
CustomerDto customer = new CustomerDto();
Validator<CustomerDto> validator = new Validator<CustomerDto>(x=>x.Name!="Remarks"); //we specify here the matching filter for properties
ValidationResult results = validator.Validate(customer);
}
这篇关于使用FluentValidation库自动进行属性验证过程的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文