public static PropertyRule HasPropertyRule <T, TProperty>(
this AbstractValidator <T> validator,
Expression <Func <T, TProperty> > expression)
{
var propertyRule = validator
.OfType <PropertyRule>()
.SingleOrDefault(rule => rule.Member == expression.GetMember());
var propertyName = expression.GetMember().Name;
Assert.IsNotNull(propertyRule, $"Expects a property rule for {propertyName}, but it is not defined");
return(propertyRule);
}
public static PropertyValidatorContext PropertyContext <TModel, TProperty>(
this AbstractValidator <TModel> validator,
TModel model,
Expression <Func <TModel, TProperty> > expression)
{
var propertyRule = validator
.OfType <PropertyRule>()
.SingleOrDefault(rule => rule.Member == expression.GetMember());
var projector = expression.Compile();
var value = projector(model);
var validationContext = new ValidationContext <TModel>(model, new PropertyChain(),
ValidatorOptions.ValidatorSelectors.DefaultValidatorSelectorFactory());
return(new PropertyValidatorContext(validationContext, propertyRule,
expression.GetMember().Name, value));
}