I would like to organize the verification of model fields so that all validation of all fields of a model class takes place in one validator class, which in turn returns an array of objects with a description of errors found, if any.
I found three validation methods:
- Using the class - ValidationAttribute;
This method seemed to me inappropriate because it involves the use of a single attribute to validate a single field. I want to create a class that will validate all the required fields at once, while causing validation error information for each field.
- Using the interface - IValidatableObject
This method satisfies my need to simultaneously check all fields and provide all validation errors found, but I don’t like the idea that the implementation of validation should be directly in the model class.
- Using the interface - IModelValidator
Using the IModelValidator interface, you can create a custom attribute for validating model data that can be applied to the model property:
public class LanguageValidator : Attribute, IModelValidator { public IEnumerable<ModelValidationResult> Validate(ModelValidationContext context) { throw new NotImplementedException(); } } As far as I understand, this method suggests the possibility of creating a validator in the form of an attribute with the possibility of validating all the fields of a class and the possibility of returning the corresponding array of errors found. In all the examples I found, this method was applied only to the class fields.
Tell me :
Is it possible using the IModelValidator interface to create validation attributes that would be applied not to the model properties but to the model class itself?
If there is any way to create a validation attribute that would allow within itself to validate all the fields of a class at once, while returning an array of all errors found for each of the fields?
