Question

尝试将json集合绑定到列表但失败了。不确定为什么。当做这样的单个对象时：

控制器

[HttpPost]
public void Permissions_Set(Permission permissions_JSON)
{
    //foreach (var permission_from_view in permissions_JSON)
    //{
    //    //doStuff
    //}
}

查看

<script>

    var data2 = { id: 1, user_id: 8, project_id: 1, mode: 3 };
    $.ajax({
        url: "Home/Permissions_Set",
        dataType: 'json',

        type: 'POST',
        data: data2,
        success: function () {
        }
    });
</script>

对象绑定正确。然而，当我使用这样的列表集合时：

控制器

[HttpPost]
public void Permissions_Set(IList<Permission> permissions_JSON)
{
    //foreach (var permission_from_view in permissions_JSON)
    //{
    //    //doStuff
    //}
}

查看

var data = { permissions_JSON: [{ id: 1, user_id: 8, project_id: 1, mode: 3 }, { id: 1, user_id: 8, project_id: 2, mode: 1 }, { id: 1, user_id: 8, project_id: 3, mode: 1 }] };
$.ajax({
    url: "Home/Permissions_Set",
    dataType: 'json',

    type: 'POST',
    data: data,
    success: function () {
    }
});

它能够弄清楚我的集合中有3个对象，但无法将数据绑定到每个对象。因此，每个对象的int为0（int的默认值）

这是模型

public class Permission
{
    public int id { get; set; }
    public int user_id { get; set; }
    public int project_id { get; set; }
    public int mode { get; set; }
}

Answer 1

设置内容类型并将集合添加到对象中就可以了解

    var bob = {permissions_JSON:[{ id: 1, user_id: 8, project_id: 1, mode: 3}]};
request.permissions_JSON = bob;

$.ajax({
    url: "Home/Permissions_Set",
    dataType: 'json',
    type: 'POST',
    contentType: 'application/json;',
    data: JSON.stringify(bob),
    success: function (data) {
        console.log(data);
    }
});

Answer 2

您应将传统参数设置为true：

var data = { permissions_JSON: [{ id: 1, user_id: 8, project_id: 1, mode: 3 }, { id: 1, user_id: 8, project_id: 2, mode: 1 }, { id: 1, user_id: 8, project_id: 3, mode: 1 }] };
$.ajax({
    url: "Home/Permissions_Set",
    dataType: 'json',
    type: 'POST',
    data: data,
    traditional: true,
    success: function () {
    }
});

单个对象绑定但列表集合没有绑定

2 个答案: