Consider this form model:
public class NewUserForm
{
public string Password { get; set; }
public string PasswordRepeated { get; set; }
}
I am using NHibernate Validator, which easily lets me validate that
the password is set, like so:
public class NewUserForm
{
[NotEmpty]
public string Password { get; set; }
public string PasswordRepeated { get; set; }
}
Then I wanted to validate that the password was properly repeated. My
first attempt went like this:
public class NewUserForm
{
[NotEmpty]
public string Password { get; set; }
[SameAs("Password")]
public string PasswordRepeated { get; set; }
}
That is, by implementing my own validation attribute with a
corresponding `IInitializableValidator` - but then I have access to
only the value of `PasswordRepeated` in the `IsValid` method, which
makes it impossible to compare the passwords.
Then I made my own validator at the class level, like this:
[ValidateClass(typeof(PasswordMustBeRepeated))]
public class NewUserForm
{
[NotEmpty]
public string Password { get; set; }
public string PasswordRepeated { get; set; }
}
- implementing the necessary logic in `PasswordMustBeRepeated` which
would be called by my custom class-level validation attribute. That
worked, but then there doesn't seem to be a way to give back
information on _which_ property caused an error in the event that the
validation fails.
Has anyone got any suggestions on how I can validate that
`PasswordRepeated` is equal to `Password` and be able to know
afterwards that it was during the validation of `PasswordRepeated`
that the validation failed?
Perhaps I could add a special `IRuleArgsWithPropertyName` to allow for
specifying the name of a property whose name should be reported as the
name of the property for which the validation failed? That would allow
me to implement the special validation like this:
public class NewUserForm
{
[NotEmpty]
public string Password { get; set; }
public string PasswordRepeated { get; set; }
[AssertTrue(PropertyName = "PasswordRepeated")]
public bool PasswordIsProperlyRepeated
{
get { return Password == PasswordRepeated; }
}
}
Any suggestions?
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