public bool BindModel(HttpActionContext actionContext, ModelBindingContext bindingContext)
{
if (!CanBindType(bindingContext.ModelType))
{
return(false);
}
if (!bindingContext.ValueProvider.ContainsPrefix(bindingContext.ModelName))
{
return(false);
}
//创建针对目标类型的空对象
var ins = DynamicModelBuilder.GetInstance <IContact>(parent: bindingContext.ModelType, propAttrProvider: () =>
{
return(new List <PropertyCustomAttributeUnit>
{
new PropertyCustomAttributeUnit
{
prop_name = "phone",
attrs = new List <PropertyCustomAttribute>
{
new PropertyCustomAttribute
{
attr_type = "System.ComponentModel.DataAnnotations.RequiredAttribute,System.ComponentModel.DataAnnotations, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35",
ctor_arg_types = "",
ctor_arg_values = new object[0],
error_msg = "姓名不能为空",
error_msg_res_name = "",
error_msg_res_type = ""
}
}
}
});
});
//bindingContext.Model = Activator.CreateInstance(bindingContext.ModelType);
bindingContext.Model = ins;
//创建针对目标类型的ComplexModelDto
//创建ModelBindingContext，并将ComplexModelDto作为Model，驱动新一轮的Model绑定
ComplexModelDto dto = new ComplexModelDto(bindingContext.ModelMetadata, bindingContext.PropertyMetadata.Values);
ModelBindingContext subContext = new ModelBindingContext(bindingContext)
{
ModelMetadata = actionContext.GetMetadataProvider().GetMetadataForType(() => dto, typeof(ComplexModelDto)),
ModelName = bindingContext.ModelName
};
actionContext.Bind(subContext);
//从ComplexModelDto获取相应的值并为相应的属性赋值
foreach (KeyValuePair <ModelMetadata, ComplexModelDtoResult> item in dto.Results)
{
ModelMetadata propertyMetadata = item.Key;
ComplexModelDtoResult dtoResult = item.Value;
if (dtoResult != null)
{
PropertyInfo propertyInfo = bindingContext.ModelType.GetProperty(propertyMetadata.PropertyName);
if (propertyInfo.CanWrite)
{
propertyInfo.SetValue(bindingContext.Model, dtoResult.Model);
}
}
}
return(true);
}
private bool TryBind(HttpActionContext actionContext, ModelBindingContext bindingContext)
{
return(actionContext.Bind(bindingContext, Binders));
}