ASP.NET MVC - 混合自定义和默认模型绑定

发布于 2024-07-23 10:38:12 字数 1119 浏览 10 评论 0原文

我有一个类型：

public class IssueForm
{
    Order Order {get; set;}
    Item Item {get; set;}
    Range Range {get; set;}
}

由于订单和项目的要求，我创建了一个自定义模型绑定器，但范围仍然可以使用默认模型绑定器。

有没有办法从我的自定义模型绑定程序中调用默认模型绑定程序以返回 Range 对象？我想我只需要正确设置 ModelBindingContext，但我不知道如何设置。

编辑

查看第一个评论和答案 - 似乎从默认模型绑定程序继承可能有用。

到目前为止，为了为我的设置添加更多细节，我有：

public IssueFormModelBinder : IModelBinder
{
    public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
    {
        Order = //code to pull the OrderNumber from the context and create an Order
        Item = //code to pull the ItemNumber from the context and create an Item

        IssueForm form = IssueFormFactory.Create(Order, Item);

        form.Range = // ** I'd like to replace my code with a call to the default binder **

        return form
    }
}

这可能是一种愚蠢的方法......这是我的第一个模型活页夹。只是指出我当前的实现。

编辑#2

因此，如果我可以像“我已经完成绑定”方法一样挂载并使用属性调用 Factory 方法，那么覆盖 BindProperty 的答案将起作用。

我想我真的应该看看 DefaultModelBinder 实现并停止愚蠢。

原文

I have a type:

public class IssueForm
{
    Order Order {get; set;}
    Item Item {get; set;}
    Range Range {get; set;}
}

I created a custom model binder due to requirements on Order and Item, but Range could still use the Default Model Binder.

Is there a way from within my custom model binder to call the default model binder to return a Range object? I think I just have to just setup ModelBindingContext correctly, but I don't know how.

EDIT

Looking at the first comment and answer -- it seems like inheriting from the default model binder could be useful.

To add more specifics for my setup so far I have:

public IssueFormModelBinder : IModelBinder
{
    public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
    {
        Order = //code to pull the OrderNumber from the context and create an Order
        Item = //code to pull the ItemNumber from the context and create an Item

        IssueForm form = IssueFormFactory.Create(Order, Item);

        form.Range = // ** I'd like to replace my code with a call to the default binder **

        return form
    }
}

This might be a stupid way of doing it... this is my first model binder. Just pointing out my current implementation.

EDIT #2

So the answers to override BindProperty will work if I can hook into like a "I'm all done binding" method and call the Factory method with the properties.

I guess I really should look at the DefaultModelBinder implementation and quit being stupid.

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泅人 2024-07-30 10:38:13

覆盖 DefaultModelBinder 中的 BindProperty：

public class CustomModelBinder:DefaultModelBinder
        {
            protected override void BindProperty( ControllerContext controllerContext, ModelBindingContext bindingContext, System.ComponentModel.PropertyDescriptor propertyDescriptor )
            {
                if (propertyDescriptor.PropertyType == typeof(Range))
                {
                    base.BindProperty(controllerContext, bindingContext, propertyDescriptor);
                }
                // bind the other properties here
            }
        }

override the BindProperty from the DefaultModelBinder:

public class CustomModelBinder:DefaultModelBinder
        {
            protected override void BindProperty( ControllerContext controllerContext, ModelBindingContext bindingContext, System.ComponentModel.PropertyDescriptor propertyDescriptor )
            {
                if (propertyDescriptor.PropertyType == typeof(Range))
                {
                    base.BindProperty(controllerContext, bindingContext, propertyDescriptor);
                }
                // bind the other properties here
            }
        }

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月隐月明月朦胧 2024-07-30 10:38:13

尝试这样的事情：

public class CustomModelBinder :  DefaultModelBinder {
    protected override void BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor) {
        if(propertyDescriptor.Name == "Order") {
            ...
            return;
        }

        if(propertyDescriptor.Name == "Item") {
            ...
            return;
        }

        base.BindProperty(controllerContext, bindingContext, propertyDescriptor);
    }

}

Try something like this:

public class CustomModelBinder :  DefaultModelBinder {
    protected override void BindProperty(ControllerContext controllerContext, ModelBindingContext bindingContext, PropertyDescriptor propertyDescriptor) {
        if(propertyDescriptor.Name == "Order") {
            ...
            return;
        }

        if(propertyDescriptor.Name == "Item") {
            ...
            return;
        }

        base.BindProperty(controllerContext, bindingContext, propertyDescriptor);
    }

}

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