ModelState.IsValid 在日期时间 post 上为 false，EF 数据库优先

Question

我正在使用 Microsoft 的 Entity Framework 6.1.3。使用数据库优先（来自 Azure SQL 服务器实例）。自动生成的实体看起来像这样 - 数据库列是 datetime2(0) 但实际上我只想保留日期但这是另一个讨论：

public partial class Liquidated
{
    public long ID { get; set; }
    public System.DateTime LiquidationDate { get; set; }
    public string Comment { get; set; }
}

自动生成的控制器：

    // POST: api/Liquidations
    [ResponseType(typeof(Liquidated))]
    public IHttpActionResult PostLiquidated(Liquidated liquidated)
    {

        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

使用 RestSharp 的单元测试：

        var client = new RestClient("http://localhost:64185/api/Liquidations");
        var request = new RestRequest(Method.POST);

        request.AddHeader("cache-control", "no-cache");
        request.AddHeader("authorization", "bearer " + token.access_token);
        request.AddHeader("content-type", "application/x-www-form-urlencoded");
        request.AddHeader("audience", "Any");
        request.AddHeader("accept-language", "en-gb");
        request.AddHeader("accept", "application/json");

        var liquidation = new Liquidated();

        liquidation.LiquidationDate = DateTime.Now;
        liquidation.Comments = "Updated group name 1";

        request.AddObject(liquidation);

        IRestResponse<Liquidated> response = client.Execute<Liquidated>(request);

但是当我检查控制器中的 ModelState 时，它无效并显示以下 LiquidationDate 格式错误：

"The value '18/04/2017 14:26:12' is not valid for LiquidationDate."

我搜索了很多帖子，试图强制格式化（这是 C# 实体和 SQL 服务器之间的日期格式化问题吗？）但我看不出我做错了什么。非常感谢任何帮助！

Answer 1

如果将 JSON 数据发布到 Web API，请确保以 ISO 8601 格式发送日期值 (2017-04-18T14:22:59Z)。否则你运行会遇到模型绑定器的问题。

将 UTC Javascript 日期对象转换为 ISO 8601 字符串（只有日期没有时间）的 JS 函数示例：

/// <summary>
/// Takes a utc js date and converts it to a iso8601 utc string
/// </summary>
GlobalJsHelpers.Iso8601FromUtc = function(utcDate) {
    //create a two digit month string (01-12)
    var month = ('0' + (utcDate.getUTCMonth() + 1)).substr(-2);
    //create a two digit day string (01-31)
    var day = ('0' + utcDate.getUTCDate()).substr(-2);
    return utcDate.getUTCFullYear() + '-' + month + '-' + day;
};

请参阅Why is RestSharp deserializing two dates differently?了解如何欺骗 RestSharp。

Answer 2

根据@DavidG 的评论，我将客户端 Liquidated class 更改为包含字符串而不是日期时间：

public partial class Liquidated
{
    public long ID { get; set; }
    public string LiquidationDate { get; set; }
    public string Comments { get; set; }
}

然后在 RestSharp 之外进行格式化：

        var client = new RestClient("http://localhost:64185/api/Liquidations");
        var request = new RestRequest(Method.POST);
        request.AddHeader("postman-token", "a95ce9b5-8c7f-e223-faa6-3768f7edd10c");
        request.AddHeader("cache-control", "no-cache");
        request.AddHeader("authorization", "bearer " + token.access_token);
        request.AddHeader("content-type", "application/x-www-form-urlencoded");
        request.AddHeader("audience", "Any");
        request.AddHeader("accept-language", "en-gb");
        request.AddHeader("accept", "application/json");

        var liquidation = new Liquidated();

        liquidation.LiquidationDate = DateTime.Now.ToString("yyyy-MM-dd");
        liquidation.Comments = "Updated group name 1";

        // request.DateFormat = "yyyy-MM-dd"; // This is ignored by RestSharp
        request.AddObject(liquidation);

        IRestResponse<Liquidated> response = client.Execute<Liquidated>(request);

已阅读 RestSharp GitHub 问题日志：https://github.com/restsharp/RestSharp/issues/629，没有支持此工具的计划。

感谢您为我指明正确的方向。

ModelState.IsValid 在日期时间 post 上为 false，EF 数据库优先

ModelState.IsValid is false on datetime post with EF Database First

c#

sql-server

restsharp

ef-database-first

entity-framework-6