private static bool VerifyValueUsability(ControllerContext controllerContext, ModelStateDictionary modelState, string modelStateKey, Type elementType, object value)
{
if (value == null && !TypeHelpers.TypeAllowsNullValue(elementType))
{
if (modelState.IsValidField(modelStateKey))
{
// a required entry field was left blank
string message = GetValueRequiredResource(controllerContext);
modelState.AddModelError(modelStateKey, message);
}
// we don't care about "you must enter a value" messages if there was an error
return(false);
}
return(true);
}
private static void AddValueRequiredMessageToModelState(
ControllerContext controllerContext,
ModelStateDictionary modelState,
string modelStateKey,
Type elementType,
object value
)
{
if (
value == null &&
!TypeHelpers.TypeAllowsNullValue(elementType) &&
modelState.IsValidField(modelStateKey)
)
{
modelState.AddModelError(
modelStateKey,
GetValueRequiredResource(controllerContext)
);
}
}
private static IEnumerable <ModelState> GetFaultedModelStates(ModelStateDictionary modelState, string[] groupNames, object model)
{
var props = GetPropertyMap(string.Empty, model, new List <object>());
IEnumerable <string> validatedPropertyNames = props
.Where(pdm => pdm.Property.Attributes.OfType <ValidationGroupAttribute>()
.Where(vg => groupNames.Intersect(vg.GroupNames, StringComparer.OrdinalIgnoreCase).Any()).Any()
).Select(pd => pd.Key).ToArray();
IEnumerable <ModelState> faulted = modelState.Where(ms => validatedPropertyNames.Contains(ms.Key) && !modelState.IsValidField(ms.Key)).Select(ms => ms.Value).ToArray();
return(faulted);
}
