private static bool TryGetProviderFromAttributes(Type modelType, out ModelBinderProvider provider)
{
ExtensibleModelBinderAttribute attr = TypeDescriptorHelper.Get(modelType).GetAttributes().OfType <ExtensibleModelBinderAttribute>().FirstOrDefault();
if (attr == null)
{
provider = null;
return(false);
}
if (typeof(ModelBinderProvider).IsAssignableFrom(attr.BinderType))
{
provider = (ModelBinderProvider)Activator.CreateInstance(attr.BinderType);
}
else if (typeof(IExtensibleModelBinder).IsAssignableFrom(attr.BinderType))
{
Type closedBinderType = (attr.BinderType.IsGenericTypeDefinition) ? attr.BinderType.MakeGenericType(modelType.GetGenericArguments()) : attr.BinderType;
IExtensibleModelBinder binderInstance = (IExtensibleModelBinder)Activator.CreateInstance(closedBinderType);
provider = new SimpleModelBinderProvider(modelType, binderInstance)
{
SuppressPrefixCheck = attr.SuppressPrefixCheck
};
}
else
{
string errorMessage = String.Format(CultureInfo.CurrentCulture, MvcResources.ModelBinderProviderCollection_InvalidBinderType,
attr.BinderType, typeof(ModelBinderProvider), typeof(IExtensibleModelBinder));
throw new InvalidOperationException(errorMessage);
}
return(true);
}
internal static void GetRequiredPropertiesCollection(Type modelType, out HashSet <string> requiredProperties, out HashSet <string> skipProperties)
{
requiredProperties = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
skipProperties = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
// Use attributes on the property before attributes on the type.
ICustomTypeDescriptor modelDescriptor = TypeDescriptorHelper.Get(modelType);
PropertyDescriptorCollection propertyDescriptors = modelDescriptor.GetProperties();
BindingBehaviorAttribute typeAttr = modelDescriptor.GetAttributes().OfType <BindingBehaviorAttribute>().SingleOrDefault();
foreach (PropertyDescriptor propertyDescriptor in propertyDescriptors)
{
BindingBehaviorAttribute propAttr = propertyDescriptor.Attributes.OfType <BindingBehaviorAttribute>().SingleOrDefault();
BindingBehaviorAttribute workingAttr = propAttr ?? typeAttr;
if (workingAttr != null)
{
switch (workingAttr.Behavior)
{
case BindingBehavior.Required:
requiredProperties.Add(propertyDescriptor.Name);
break;
case BindingBehavior.Never:
skipProperties.Add(propertyDescriptor.Name);
break;
}
}
}
}
internal static IModelBinder GetBinderFromAttributes(Type type, Func <string> errorMessageAccessor)
{
AttributeCollection allAttrs = TypeDescriptorHelper.Get(type).GetAttributes();
CustomModelBinderAttribute[] filteredAttrs = allAttrs.OfType <CustomModelBinderAttribute>().ToArray();
return(GetBinderFromAttributesImpl(filteredAttrs, errorMessageAccessor));
}
private static bool TryGetProviderFromAttributes(Type modelType, out ModelBinderProvider provider)
{
ModelBinderAttribute attr = TypeDescriptorHelper.Get(modelType).GetAttributes().OfType <ModelBinderAttribute>().FirstOrDefault();
if (attr == null)
{
provider = null;
return(false);
}
// TODO, 386718, remove the following if statement when the bug is resolved
if (attr.BinderType == null)
{
provider = null;
return(false);
}
if (typeof(ModelBinderProvider).IsAssignableFrom(attr.BinderType))
{
provider = (ModelBinderProvider)Activator.CreateInstance(attr.BinderType);
}
else
{
throw Error.InvalidOperation(SRResources.ModelBinderProviderCollection_InvalidBinderType, attr.BinderType.Name, typeof(ModelBinderProvider).Name, typeof(IModelBinder).Name);
}
return(true);
}
private TypeInformation CreateTypeInformation(Type type)
{
TypeInformation info = new TypeInformation();
ICustomTypeDescriptor typeDescriptor = TypeDescriptorHelper.Get(type);
info.TypeDescriptor = typeDescriptor;
info.Prototype = CreateMetadataPrototype(
AsAttributes(typeDescriptor.GetAttributes()),
containerType: null,
modelType: type,
propertyName: null
);
Dictionary <string, PropertyInformation> properties =
new Dictionary <string, PropertyInformation>();
foreach (PropertyDescriptor property in typeDescriptor.GetProperties())
{
// Avoid re-generating a property descriptor if one has already been generated for the property name
if (!properties.ContainsKey(property.Name))
{
properties.Add(property.Name, CreatePropertyInformation(type, property));
}
}
info.Properties = properties;
return(info);
}
protected virtual void SetProperty(ControllerContext controllerContext, ExtensibleModelBindingContext bindingContext, ModelMetadata propertyMetadata, ComplexModelDtoResult dtoResult)
{
PropertyDescriptor propertyDescriptor = TypeDescriptorHelper.Get(bindingContext.ModelType).GetProperties().Find(propertyMetadata.PropertyName, true /* ignoreCase */);
if (propertyDescriptor == null || propertyDescriptor.IsReadOnly)
{
return; // nothing to do
}
object value = dtoResult.Model ?? GetPropertyDefaultValue(propertyDescriptor);
propertyMetadata.Model = value;
// 'Required' validators need to run first so that we can provide useful error messages if
// the property setters throw, e.g. if we're setting entity keys to null. See comments in
// DefaultModelBinder.SetProperty() for more information.
if (value == null)
{
string modelStateKey = dtoResult.ValidationNode.ModelStateKey;
if (bindingContext.ModelState.IsValidField(modelStateKey))
{
ModelValidator requiredValidator = ModelValidatorProviders.Providers.GetValidators(propertyMetadata, controllerContext).Where(v => v.IsRequired).FirstOrDefault();
if (requiredValidator != null)
{
foreach (ModelValidationResult validationResult in requiredValidator.Validate(bindingContext.Model))
{
bindingContext.ModelState.AddModelError(modelStateKey, validationResult.Message);
}
}
}
}
if (value != null || TypeHelpers.TypeAllowsNullValue(propertyDescriptor.PropertyType))
{
try
{
propertyDescriptor.SetValue(bindingContext.Model, value);
}
catch (Exception ex)
{
// don't display a duplicate error message if a binding error has already occurred for this field
string modelStateKey = dtoResult.ValidationNode.ModelStateKey;
if (bindingContext.ModelState.IsValidField(modelStateKey))
{
bindingContext.ModelState.AddModelError(modelStateKey, ex);
}
}
}
else
{
// trying to set a non-nullable value type to null, need to make sure there's a message
string modelStateKey = dtoResult.ValidationNode.ModelStateKey;
if (bindingContext.ModelState.IsValidField(modelStateKey))
{
dtoResult.ValidationNode.Validated += CreateNullCheckFailedHandler(controllerContext, propertyMetadata, value);
}
}
}
private static void EnsureNoBindAttribute(Type modelType)
{
if (TypeDescriptorHelper.Get(modelType).GetAttributes().OfType <BindAttribute>().Any())
{
string errorMessage = String.Format(CultureInfo.CurrentCulture, MvcResources.ModelBinderProviderCollection_TypeCannotHaveBindAttribute,
modelType);
throw new InvalidOperationException(errorMessage);
}
}
internal static void GetRequiredPropertiesCollection(
HttpActionContext actionContext,
ModelBindingContext bindingContext,
out HashSet <string> requiredProperties,
out Dictionary <string, ModelValidator> requiredValidators,
out HashSet <string> skipProperties
)
{
requiredProperties = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
requiredValidators = new Dictionary <string, ModelValidator>(
StringComparer.OrdinalIgnoreCase
);
skipProperties = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
// Use attributes on the property before attributes on the type.
ICustomTypeDescriptor modelDescriptor = TypeDescriptorHelper.Get(
bindingContext.ModelType
);
PropertyDescriptorCollection propertyDescriptors = modelDescriptor.GetProperties();
HttpBindingBehaviorAttribute typeAttr = modelDescriptor
.GetAttributes()
.OfType <HttpBindingBehaviorAttribute>()
.SingleOrDefault();
foreach (PropertyDescriptor propertyDescriptor in propertyDescriptors)
{
string propertyName = propertyDescriptor.Name;
ModelMetadata propertyMetadata = bindingContext.PropertyMetadata[propertyName];
ModelValidator requiredValidator = actionContext
.GetValidators(propertyMetadata)
.Where(v => v.IsRequired)
.FirstOrDefault();
requiredValidators[propertyName] = requiredValidator;
HttpBindingBehaviorAttribute propAttr = propertyDescriptor.Attributes
.OfType <HttpBindingBehaviorAttribute>()
.SingleOrDefault();
HttpBindingBehaviorAttribute workingAttr = propAttr ?? typeAttr;
if (workingAttr != null)
{
switch (workingAttr.Behavior)
{
case HttpBindingBehavior.Required:
requiredProperties.Add(propertyName);
break;
case HttpBindingBehavior.Never:
skipProperties.Add(propertyName);
break;
}
}
else if (requiredValidator != null)
{
requiredProperties.Add(propertyName);
}
}
}
protected override System.ComponentModel.ICustomTypeDescriptor GetTypeDescriptor(Type type)
{
var descriptor = TypeDescriptorHelper.Get(type);
if (descriptor == null)
{
descriptor = base.GetTypeDescriptor(type);
}
return descriptor;
}
private static ModelBinderAttribute GetModelBinderAttribute(Type modelType)
{
ModelBinderAttribute modelBinderAttribute;
if (!_modelBinderAttributeCache.TryGetValue(modelType, out modelBinderAttribute))
{
modelBinderAttribute = TypeDescriptorHelper.Get(modelType).GetAttributes().OfType <ModelBinderAttribute>().FirstOrDefault();
_modelBinderAttributeCache.TryAdd(modelType, modelBinderAttribute);
}
return(modelBinderAttribute);
}
internal static bool TryGetProviderFromAttributes(Type modelType, out ModelBinderProvider provider)
{
ModelBinderAttribute attr = TypeDescriptorHelper.Get(modelType).GetAttributes().OfType <ModelBinderAttribute>().FirstOrDefault();
if (attr == null)
{
provider = null;
return(false);
}
return(TryGetProviderFromAttribute(modelType, attr, out provider));
}
internal static bool IsRequiredDataMember(Type containerType, IEnumerable <Attribute> attributes)
{
DataMemberAttribute dataMemberAttribute = attributes.OfType <DataMemberAttribute>().FirstOrDefault();
if (dataMemberAttribute != null)
{
// isDataContract == true iff the container type has at least one DataContractAttribute
bool isDataContract = TypeDescriptorHelper.Get(containerType).GetAttributes().OfType <DataContractAttribute>().Any();
if (isDataContract && dataMemberAttribute.IsRequired)
{
return(true);
}
}
return(false);
}
private TypeInformation CreateTypeInformation(Type type)
{
TypeInformation info = new TypeInformation();
ICustomTypeDescriptor typeDescriptor = TypeDescriptorHelper.Get(type);
info.TypeDescriptor = typeDescriptor;
info.Prototype = CreateMetadataPrototype(AsAttributes(typeDescriptor.GetAttributes()), containerType: null, modelType: type, propertyName: null);
Dictionary <string, PropertyInformation> properties = new Dictionary <string, PropertyInformation>();
foreach (PropertyDescriptor property in typeDescriptor.GetProperties())
{
properties.Add(property.Name, CreatePropertyInformation(type, property));
}
info.Properties = properties;
return(info);
}
internal static bool TryGetProviderFromAttributes(HttpParameterDescriptor parameterDescriptor, out ModelBinderProvider provider)
{
Contract.Assert(parameterDescriptor != null, "parameterDescriptor cannot be null.");
Type modelType = parameterDescriptor.ParameterType;
ModelBinderAttribute attr = parameterDescriptor.GetCustomAttributes <ModelBinderAttribute>().FirstOrDefault();
if (attr == null)
{
attr = TypeDescriptorHelper.Get(modelType).GetAttributes().OfType <ModelBinderAttribute>().FirstOrDefault();
}
if (attr == null)
{
provider = null;
return(false);
}
return(TryGetProviderFromAttribute(modelType, attr, out provider));
}
protected virtual ICustomTypeDescriptor GetTypeDescriptor(Type type)
{
return(TypeDescriptorHelper.Get(type));
}