使用AJAX将动态数据传递给mvc控制器

How can I pass dynamic data with an AJAX call to an MVC Controller?

如何通过AJAX调用将动态数据传递给MVC控制器？

Controller:

控制器：

public JsonResult ApplyFilters(dynamic filters){
   return null;
}

The AJAX call:

AJAX电话：

$(':checkbox').click(function (event) {
    var serviceIds = $('input[type="checkbox"]:checked').map(function () {
        return $(this).val();
    }).toArray();

    //alert(serviceIds);

    $.ajax({
        type: 'GET',
        url: '/home/ApplyFilters',
        data: JSON.stringify({
            name: serviceIds
        }),
        contentType: 'application/json',

        success: function (data) {
            alert("succeeded");
        },
        error: function (err, data) {
            alert("Error " + err.responseText);
        }
    });

    //return false;
});

Ideally would be that the filters would contain the serviceIds as a property

理想情况下，过滤器将包含serviceIds作为属性

For example like this: filters.ServiceIds. I got another filter for a date range and that one would be added like so: filters.DateRange.

例如：filter.ServiceIds。我有一个日期范围的另一个过滤器，其中一个将添加如下：filters.DateRange。

And server side get the filter as a dynamic object in the ApplyFilters()

服务器端将过滤器作为ApplyFilters（）中的动态对象

1 个解决方案

#1

Ad far as i know the default ASP MVC model binder cannot accomplish such a thing.

据我所知，默认的ASP MVC模型绑定器无法完成这样的事情。

Fortunately there are numerous solutions, here are two of them :

幸运的是有很多解决方案，其中有两个：

1. Here is the first one, it converts your JSON data into a IDictionary<string, object> instance before passing it to your controller action. You would end up with :

1.这是第一个，它将您的JSON数据转换为IDictionary 实例，然后将其传递给您的控制器操作。你会最终得到：

public JsonResult ApplyFilters(IDictionary<string, object> filters)
{
   return null;
}

2. The second approach enables your controller action to receive a JsonValue instance. Making your action looks like this one :

2.第二种方法使您的控制器操作能够接收JsonValue实例。让你的行动看起来像这样：

public JsonResult ApplyFilters([DynamicJson]JsonValue filters)
{
   return null;
}

3. Based on the previous tutorials, you could create your own custom model binder returning a dynamic object. The following code has been taken from the first proposal and modified to generate a dynamic object. It is just to illustrate the idea, don't use it as is :

3.根据之前的教程，您可以创建自己的自定义模型绑定器，返回动态对象。以下代码取自第一个提案并已修改以生成动态对象。它只是为了说明这个想法，不要按原样使用它：

public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
    if (!controllerContext.HttpContext.Request.ContentType.StartsWith("application/json", StringComparison.OrdinalIgnoreCase))
    {
        return null;
    }

    controllerContext.HttpContext.Request.InputStream.Position = 0;
    using (var reader = new StreamReader(controllerContext.HttpContext.Request.InputStream))
    {
        var json = reader.ReadToEnd();
        if (string.IsNullOrEmpty(json))
        {
            return null;
        }
        dynamic result = new ExpandoObject();
        var deserializedObject = new JavaScriptSerializer().DeserializeObject(json) as IDictionary<string, object>;
        if (deserializedObject != null)
        {
            foreach (var item in deserializedObject)
            {
                ((IDictionary<string, object>)result).Add(item.Key, item.Value);
            }
        }
        return result;
    }
}

These solutions rely on building a custom model binder to handle this particuliar scenario :

这些解决方案依赖于构建自定义模型绑定器来处理这种特殊情况：

Custom model binder is just an implementation of the IModelBinder interface in charge of parsing JSON posted data and converting them into another format.
自定义模型绑定器只是IModelBinder接口的一个实现，负责解析JSON发布的数据并将它们转换为另一种格式。
ASP MVC framework is told to use these specific custom model binders by registering them (with ModelBinders.Binders.Add or using a dedicated attribute (CustomModelBinderAttribute).
ASP MVC框架被告知通过注册它们（使用ModelBinders.Binders.Add或使用专用属性（CustomModelBinderAttribute））来使用这些特定的自定义模型绑定器。

1 个解决方案

#1

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