/// <summary>
/// Gets the <see cref="PropertyValidator"/> instances for the specified <paramref name="type"/>.
/// </summary>
/// <param name="type">The <see cref="Type"/> that the validators should be retrieved for.</param>
/// <returns>An <see cref="IEnumerable{T}"/> instance, containing <see cref="IPropertyValidator"/> objects.</returns>
public IEnumerable <IPropertyValidator> GetValidators(Type type)
{
var typeDescriptor =
new AssociatedMetadataTypeTypeDescriptionProvider(type).GetTypeDescriptor(type);
var propertyDescriptors =
typeDescriptor.GetProperties();
var results =
new List <IPropertyValidator>();
foreach (PropertyDescriptor descriptor in propertyDescriptors)
{
var attributes =
descriptor.Attributes.OfType <ValidationAttribute>();
var validator =
new PropertyValidator
{
AttributeAdaptors = this.GetAttributeAdaptors(attributes),
Descriptor = descriptor
};
results.Add(validator);
}
return(results);
}
private TypeInformation CreateTypeInformation(Type type)
{
TypeInformation info = new TypeInformation();
ICustomTypeDescriptor typeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(type).GetTypeDescriptor(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))
{
if (property.Attributes.OfType <IUnvalidatable>().Any())
{
continue;
}
properties.Add(property.Name, CreatePropertyInformation(type, property));
}
}
info.Properties = properties;
return(info);
}
private object BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
Type modelType = bindingContext.ModelType;
//绑定字典
if (this.Match(modelType, typeof(IDictionary <,>)))
{
return(this.BindDictionary(controllerContext, bindingContext));
}
//绑定集合
if (this.Match(modelType, typeof(IEnumerable <>)))
{
return(this.BindCollection(controllerContext, bindingContext));
}
object model = this.CreateModel(controllerContext, bindingContext, modelType);
bindingContext.ModelMetadata.Model = model;
//针对每个描述属性的PropertyDescriptor对象调用BindProperty方法对相应属性赋值
ICustomTypeDescriptor modelTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(modelType).GetTypeDescriptor(modelType);
PropertyDescriptorCollection propertyDescriptors = modelTypeDescriptor.GetProperties();
foreach (PropertyDescriptor propertyDescriptor in propertyDescriptors)
{
this.BindProperty(controllerContext, bindingContext, propertyDescriptor);
}
return(model);
}
private static IList <Attribute> GetModelMetadataAttributes(ModelMetadata metadata)
{
var customTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(metadata.ContainerType).GetTypeDescriptor(metadata.ContainerType);
if (customTypeDescriptor != null)
{
var descriptor = customTypeDescriptor.GetProperties().Find(metadata.PropertyName, true);
return((new List <Attribute>(descriptor.Attributes.OfType <Attribute>())).ToList <Attribute>());
}
return(null);
}
private static List <IDataAnnotationsValidatorAdapter> GetAdapters(Type type)
{
var typeDescriptor =
new AssociatedMetadataTypeTypeDescriptionProvider(type).GetTypeDescriptor(type);
var adapters =
GetAdapters(null, type, typeDescriptor.GetAttributes().OfType <ValidationAttribute>());
var propertyDescriptors =
typeDescriptor.GetProperties();
foreach (PropertyDescriptor property in propertyDescriptors)
{
adapters.AddRange(GetAdapters(property, property.PropertyType, property.Attributes.OfType <ValidationAttribute>()));
}
return(adapters);
}
private object BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
//针对目标类型创建一个空Model对象
Type modelType = bindingContext.ModelType;
object model = this.CreateModel(controllerContext, bindingContext, modelType);
bindingContext.ModelMetadata.Model = model;
//针对每个描述属性的PropertyDescriptor对象调用BindProperty方法对相应属性赋值
ICustomTypeDescriptor modelTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(modelType).GetTypeDescriptor(modelType);
PropertyDescriptorCollection propertyDescriptors = modelTypeDescriptor.GetProperties();
foreach (PropertyDescriptor propertyDescriptor in propertyDescriptors)
{
this.BindProperty(controllerContext, bindingContext, propertyDescriptor);
}
return(model);
}
/// <summary>
/// 获取主键值
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="obj"></param>
/// <returns></returns>
private static BsonValue GetKeyValue <T>(T obj)
{
var type = typeof(T);
var descriptor = new AssociatedMetadataTypeTypeDescriptionProvider(type).GetTypeDescriptor(type);
if (descriptor == null)
{
return(null);
}
object id = null;
foreach (PropertyDescriptor propertyDescriptor in descriptor.GetProperties())
{
var key = propertyDescriptor.Name;
if (string.Equals(key, "id", StringComparison.OrdinalIgnoreCase))
{
id = propertyDescriptor.GetValue(obj);
break;
}
var b = false;
foreach (Attribute validationAttribute in propertyDescriptor.Attributes)
{
if (!(validationAttribute is KeyAttribute))
{
continue;
}
b = true;
break;
}
if (!b)
{
continue;
}
id = propertyDescriptor.GetValue(obj);
break;
}
return(id == null ? null : new BsonValue(id));
}
private static string GetErrorMessageForDataTypeAttribute(ModelMetadata metadata)
{
string retVal = null;
var customTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(metadata.ContainerType).GetTypeDescriptor(metadata.ContainerType);
if (customTypeDescriptor != null)
{
var descriptor = customTypeDescriptor.GetProperties().Find(metadata.PropertyName, true);
var req = (new List <Attribute>(descriptor.Attributes.OfType <Attribute>())).OfType <DataTypeAttribute>().FirstOrDefault();
if (req != null)
{
retVal = (string)req.ErrorMessageResourceType?.GetProperty(req.ErrorMessageResourceName)?.GetMethod.Invoke(null, null);
}
}
return(retVal);
}
private static string GetErrorMessage(ModelMetadata metadata)
{
string retVal = String.Empty;
var customTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(metadata.ContainerType).GetTypeDescriptor(metadata.ContainerType);
if (customTypeDescriptor != null)
{
var descriptor = customTypeDescriptor.GetProperties().Find(metadata.PropertyName, true);
var req = (new List <Attribute>(descriptor.Attributes.OfType <Attribute>())).OfType <RequiredAttribute>().FirstOrDefault();
if (req != null)
{
retVal = req.ErrorMessage;
}
}
return(retVal);
}
/// <summary>
/// Validates the specified validation context.
/// </summary>
/// <param name="validationContext">The validation context.</param>
/// <param name="metadata">The metadata.</param>
/// <returns></returns>
public IEnumerable <ValidationResult> Validate(ValidationContext validationContext, ModelMetadata metadata)
{
if (!metadata.IsRequired || VirtualPath != null)
{
yield break;
}
var customTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(metadata.ContainerType).GetTypeDescriptor(metadata.ContainerType);
if (customTypeDescriptor == null)
{
yield break;
}
var descriptor = customTypeDescriptor.GetProperties().Find(metadata.PropertyName, true);
var req = (new List <Attribute>(descriptor.Attributes.OfType <Attribute>())).OfType <RequiredAttribute>().FirstOrDefault();
if (req != null)
{
yield return(new ValidationResult(req.FormatErrorMessage(metadata.DisplayName)));
}
}
public ParameterHandler(ParameterInfo parameterInfo)
{
if (IsSimpleType(parameterInfo.ParameterType) || IsEnumerable(parameterInfo.ParameterType))
{
GetRouteValues =
new ReadOnlyCollection <RouteValueHandler>(new List <RouteValueHandler>()
{
new RouteValueHandler(parameterInfo.Name, v => v)
});
}
else
{
var type = parameterInfo.ParameterType;
var typeDesc = new AssociatedMetadataTypeTypeDescriptionProvider(type).GetTypeDescriptor(type);
var propDescs = typeDesc.GetProperties();
GetRouteValues = propDescs.OfType <PropertyDescriptor>()
.Select(desc => new RouteValueHandler(desc.Name, desc.GetValue)).ToList();
}
IsFromUri = true;
}
private object BindComplexModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
Type modelType = bindingContext.ModelType;
//绑定字典
if (this.Match(modelType, typeof(IDictionary <,>)))
{
return(this.BindDictionary(controllerContext, bindingContext));
}
//绑定集合
if (this.Match(modelType, typeof(IEnumerable <>)))
{
return(this.BindCollection(controllerContext, bindingContext));
}
object model = this.CreateModel(controllerContext, bindingContext, modelType);
bindingContext.ModelMetadata.Model = model;
//针对每个描述属性的PropertyDescriptor对象调用BindProperty方法对相应属性赋值
ICustomTypeDescriptor modelTypeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(modelType).GetTypeDescriptor(modelType);
PropertyDescriptorCollection propertyDescriptors = modelTypeDescriptor.GetProperties();
foreach (PropertyDescriptor propertyDescriptor in propertyDescriptors)
{
this.BindProperty(controllerContext, bindingContext, propertyDescriptor);
}
ModelMetadata metadata = ModelMetadataProviders.Current.GetMetadataForType(() => model, modelType);
MyCompositeModelValidator validator = new MyCompositeModelValidator(metadata, controllerContext);
foreach (ModelValidationResult result in validator.Validate(null))
{
string key = (bindingContext.ModelName ?? "") + "." + (result.MemberName ?? "");
key = key.Trim('.');
controllerContext.Controller.ViewData.ModelState.AddModelError(key, result.Message);
}
return(model);
}
public static string GetPropertyDisplayName(this ValidationContext validationContext, string propertyName)
{
if (validationContext == null)
{
throw new ArgumentNullException(nameof(validationContext));
}
if (propertyName == null)
{
throw new ArgumentNullException(nameof(propertyName));
}
if (string.IsNullOrWhiteSpace(propertyName))
{
throw new ArgumentException("Value cannot be empty or whitespace only string.", nameof(propertyName));
}
var typeDescriptor = new AssociatedMetadataTypeTypeDescriptionProvider(validationContext.ObjectType).GetTypeDescriptor(validationContext.ObjectType);
var property = typeDescriptor.GetProperties().Find(propertyName, true);
if (property == null)
{
throw new ArgumentException("Property not found", nameof(propertyName));
}
IEnumerable <Attribute> attributes = property.Attributes.Cast <Attribute>();
DisplayAttribute display = attributes.OfType <DisplayAttribute>().FirstOrDefault();
if (display != null)
{
return(display.GetName());
}
var displayName = attributes.OfType <DisplayNameAttribute>().FirstOrDefault();
if (displayName != null)
{
return(displayName.DisplayName);
}
return(propertyName);
}
