禁止在某些情况下需要的验证属性 [英] Disable Required validation attribute under certain circumstances

问题描述

我想知道是否可以禁用某些控制器操作必需的验证属性。我想知道这一点，因为在我的编辑形式之一，我不要求用户对他们已经指定previously字段中输入值。不过，我再实现逻辑，当他们输入一个值，它使用了一些特殊的逻辑更新模型，如散列值等。

I was wondering if it is possible to disable the Required validation attribute in certain controller actions. I am wondering this because on one of my edit forms I do not require the user to enter values for fields that they have already specified previously. However I then implement logic that when they enter a value it uses some special logic to update the model, such as hashing a value etc.

如何解决这个问题的任何建议吗？

Any sugestions on how to get around this problem?

编辑：

是的客户端验证是一个问题在这里，因为它不会允许他们提交表单不输入值。

And yes client validation is a problem here to, as it will not allow them to submit the form without entering a value.

推荐答案

这问题可以很容易地通过使用视图模型解决。查看模型是专门针对给定视图的需求类。因此，例如你的情况，你可以有以下视图模型：

This problem can be easily solved by using view models. View models are classes that are specifically tailored to the needs of a given view. So for example in your case you could have the following view models:

public UpdateViewView
{
    [Required]
    public string Id { get; set; }

    ... some other properties
}

public class InsertViewModel
{
    public string Id { get; set; }

    ... some other properties
}

，这将在其相应的控制器操作用于：

which will be used in their corresponding controller actions:

[HttpPost]
public ActionResult Update(UpdateViewView model)
{
    ...
}

[HttpPost]
public ActionResult Insert(InsertViewModel model)
{
    ...
}

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