public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
var propertyName = bindingContext.ModelName;
var rawValue = bindingContext.ValueProvider.GetValue(bindingContext.ModelName).RawValue;
var queryArgument = rawValue is string?(string)rawValue : ((string[])rawValue)[0];
var comparisonPredicate = ComparisonPredicate.Parse(queryArgument);
var filter = (IPropertyFilterInitializer)Activator.CreateInstance(bindingContext.ModelType);
filter.Initialize(propertyName, comparisonPredicate);
return(filter);
}
void IPropertyFilterInitializer.Initialize(string propertyName, ComparisonPredicate predicate)
{
Name = propertyName;
Operator = predicate.Operator;
RawValue = predicate.RawValue;
if (Operator != ComparisonOperator.Any)
{
// use converter if exists to give a chance to types (like enum) to provide a custom conversion
// TODO should use a converter specified property-wise, see http://stackoverflow.com/questions/458935/extend-a-typeconverter
var converter = TypeDescriptor.GetConverter(typeof(T));
Value = (T)(converter != null && converter.CanConvertFrom(typeof(string))
? converter.ConvertFrom(predicate.Value)
: Convert.ChangeType(predicate.Value, typeof(T)));
}
}
