Question

我有一个员工控制器并尝试将记录添加到MongoDB中的员工文档中。但问题是记录只插入了一次。当我添加新记录时，它不会插入。

这是我的代码

public class Employee
{
    [BsonId]
    public ObjectId EmployeeId { get; set; }
    public string EmployeeName { get; set; }
}

public ActionResult Create()
{
    return View(new Employee());
}

控制器

[HttpPost]
public ActionResult Create(Employee employee)
{
    var collection = GetEmployeeCollection();

    collection.CreateIndex(new IndexKeysBuilder().Ascending("EmployeeNameUnique"), IndexOptions.SetUnique(true));
    collection.Insert(employee);

    return RedirectToAction("Index");
}

public MongoCollection<Employee> GetEmployeeCollection()
    {
        var con = new MongoConnectionStringBuilder(ConfigurationManager.ConnectionStrings["MongoDBConnection"].ConnectionString);
        var server = MongoServer.Create(con);
        var db = server.GetDatabase(con.DatabaseName);

        return db.GetCollection<Employee>("employee");
    }

Answer 1

问题是因为唯一的名称约束。我放弃了约束，它工作正常。

collection.DropAllIndexes()

记录仅在MongoDB文档中插入一次

1 个答案: