PM> Install-Package FluentValidation -Version 9.3.0
PM> Install-Package FluentValidation.AspNetCore -Version 9.3.0
PM> Install-Package FluentValidation.DependencyInjectionExtensions -Version 9.3.0using FluentValidation;
using FluentValidation.AspNetCore;
public void ConfigureServices(IServiceCollection services)
{
// ..
services.AddControllers().AddFluentValidation();
services.AddTransient<IValidator<TDto>, TDtoValidator>();
// ..
}public class WithAttributeDto
{
[Required]
[MaxLength(100)]
public string Foo { get; set; }
[MaxLength(100)]
public string Bar { get; set; }
[Required]
[Range(1, 100)]
public int Fizz { get; set; }
[Range(1, 100)]
public int? Buzz { get; set; }
[Required]
[DataType(DataType.DateTime)]
[Range(typeof(DateTime), "2000-01-01", "3000-01-01")]
public DateTime StartDate { get; set; }
[Required]
[DataType(DataType.DateTime)]
[Range(typeof(DateTime), "2000-01-01", "3000-01-01")]
public DateTime EndDate { get; set; }
}
public class WithoutAttributeDto
{
public string Foo { get; set; }
public string Bar { get; set; }
public int Fizz { get; set; }
public int? Buzz { get; set; }
public DateTime StartDate { get; set; }
public DateTime EndDate { get; set; }
}
public class WithoutAttributeDtoValidator : AbstractValidator<WithoutAttributeDto>
{
public WithoutAttributeDtoValidator()
{
RuleFor(dto => dto.Foo)
.Cascade(CascadeMode.Stop)
.NotNull()
.WithMessage("Foo should not be null")
.NotEmpty()
.WithMessage("Foo should not be empty")
.MaximumLength(100)
.WithMessage("Foo should have a max length of 100");
RuleFor(dto => dto.Bar)
.Cascade(CascadeMode.Stop)
.NotEmpty()
.When(dto => dto.Bar != null, ApplyConditionTo.CurrentValidator)
.WithMessage("Bar should not be empty")
.MaximumLength(100)
.When(dto => dto.Bar != null, ApplyConditionTo.CurrentValidator)
.WithMessage("Bar should have a max length of 100");
RuleFor(dto => dto.Fizz)
.Cascade(CascadeMode.Stop)
.NotNull()
.WithMessage("Fizz should not be null")
.InclusiveBetween(1, 100)
.WithMessage("Fizz should have a value between 1 and 100");
RuleFor(dto => dto.Buzz)
.Cascade(CascadeMode.Stop)
.InclusiveBetween(1, 100)
.When(dto => dto.Buzz.HasValue, ApplyConditionTo.CurrentValidator)
.WithMessage("Buzz should have a value between 1 and 100");
RuleFor(dto => dto.StartDate)
.Cascade(CascadeMode.Stop)
.NotNull()
.WithMessage("Start date should not be null")
.InclusiveBetween(new DateTime(2000, 1, 1), new DateTime(3000, 1, 1))
.WithMessage("Start date should have a value between 2000-01-01 and 3000-01-01");
RuleFor(dto => dto.EndDate)
.Cascade(CascadeMode.Stop)
.NotNull()
.WithMessage("End date should not be null")
.InclusiveBetween(new DateTime(2000, 1, 1), new DateTime(3000, 1, 1))
.WithMessage("End date should have a value between 2000-01-01 and 3000-01-01");
}
}[POST] /api/framework-validation/test
[POST] /api/fluent-validation/test
// Request
{
"foo": "isRequired",
"bar": null,
"fizz": 24,
"buzz": 42,
"startDate": "2020-01-01T12:00:00.000Z",
"endDate": "2020-12-31T12:00:00.000Z"
}
// Response
{
"foo": "isRequired",
"bar": null,
"fizz": 24,
"buzz": 42,
"startDate": "2020-01-01T12:00:00Z",
"endDate": "2020-12-31T12:00:00Z"
}[POST] /api/framework-validation/test
// Request
{
"foo": "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901",
"bar": "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901",
"fizz": -1,
"buzz": -1,
"startDate": "1999-12-31T23:59:59.999Z",
"_endDate": "1999-12-31T23:59:59.999Z"
}
// Response
{
"type": "..",
"title": "One or more validation errors occurred.",
"status": 400,
"traceId": "..",
"errors": {
"Bar": [
"The field Bar must be a string or array type with a maximum length of '100'."
],
"Foo": [
"The field Foo must be a string or array type with a maximum length of '100'."
],
"Buzz": [
"The field Buzz must be between 1 and 100."
],
"Fizz": [
"The field Fizz must be between 1 and 100."
],
"EndDate": [
"The field EndDate must be between 01/01/2000 00:00:00 and 01/01/3000 00:00:00."
],
"StartDate": [
"The field StartDate must be between 01/01/2000 00:00:00 and 01/01/3000 00:00:00."
]
}
}[POST] /api/fluent-validation/test
// Request
{
"foo": "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901",
"bar": "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901",
"fizz": -1,
"buzz": -1,
"startDate": "1999-12-31T23:59:59.999Z",
"_endDate": "1999-12-31T23:59:59.999Z"
}
// Response
{
"type": "..",
"title": "One or more validation errors occurred.",
"status": 400,
"traceId": "..",
"errors": {
"Bar": [
"Bar should have a max length of 100"
],
"Foo": [
"Foo should have a max length of 100"
],
"Buzz": [
"Buzz should have a value between 1 and 100"
],
"Fizz": [
"Fizz should have a value between 1 and 100"
],
"EndDate": [
"End date should have a value between 2000-01-01 and 3000-01-01"
],
"StartDate": [
"Start date should have a value between 2000-01-01 and 3000-01-01"
]
}
}[POST] /api/fluent-validation/test-mixed
// Request
{
"foo": "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901",
"bar": "12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901",
"fizz": -1,
"buzz": -1,
"startDate": "1999-12-31T23:59:59.999Z",
"_endDate": "1999-12-31T23:59:59.999Z"
}
// Response
{
"type": "..",
"title": "One or more validation errors occurred.",
"status": 400,
"traceId": "..",
"errors": {
"Bar": [
"The field Bar must be a string or array type with a maximum length of '100'."
],
"Foo": [
"The field Foo must be a string or array type with a maximum length of '100'."
],
"Buzz": [
"The field Buzz must be between 1 and 100."
],
"Fizz": [
"The field Fizz must be between 1 and 100."
],
"EndDate": [
"End date should have a value between 2000-01-01 and 3000-01-01"
],
"StartDate": [
"Start date should have a value between 2000-01-01 and 3000-01-01"
]
}
}