Question

我有一个应用程序，我希望志愿者能够帮助举行仪式。

我希望他们登录并点击一个按钮，这会将他们带到一个页面，显示他们的详细信息以及他们可以申请的仪式列表。我有那个页面工作，但我没办法让当前用户登录。

另外，为了澄清：我有一个志愿者实体，它持有数据，然后是一个单独的用户实体。志愿者的用户名与其用户实体相同。

我想：

将用户名与志愿者用户名进行比较并获取 VolunteerId。

2.然后，这将用于编辑/加入该特定志愿者的仪式。

这是我的志愿者控制器方法：

// GET: 
    public ActionResult VolunteerCeremony(int? id)
    {
        if (id == null)
        {
            return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
        }



        string userName = string.Empty;

        var getVolunteerId = (from u in db.Volunteers
                              where WebSecurity.CurrentUserName == u.Username
                              select u.VolunteerId).SingleOrDefault();


        Volunteer v = (Volunteer)(from k in db.Volunteers
                       where getVolunteerId == k.VolunteerId
                       select k).SingleOrDefault();


        if (v == null)
        {
            return HttpNotFound();
        }
        PopulateAssignedCeremonyData(v);
        return View(v);
    }

    // GET: 
    public ActionResult VolunteerHub()
    {
        return View();

    }


    // POST: /Player/VolunteerCeremony/5
    // To protect from overposting attacks, please enable the specific properties you want to bind to, for 
    // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
    [HttpPost]
    [ValidateAntiForgeryToken]
    public ActionResult VolunteerCeremony(int? id, string[] selectedOptions)
    {
        if (id == null)
        {
            return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
        }

        var getVolunteerId = (from u in db.Volunteers
                              where WebSecurity.CurrentUserName == u.Username
                              select u.VolunteerId).SingleOrDefault();


        var v = (Volunteer)(from k in db.Volunteers
                                  where getVolunteerId == k.VolunteerId
                                  select k).SingleOrDefault();

        try
        {
            UpdateVolunteerCeremonies(selectedOptions, v);

            db.Entry(v).State = EntityState.Modified;
            db.SaveChanges();

            return RedirectToAction("Index");
        }
        catch (RetryLimitExceededException /* dex */)
        {
            //Log the error (uncomment dex variable name and add a line here to write a log.
            ModelState.AddModelError("", "Unable to save changes. Try again, and if the problem persists, see your system administrator.");
        }


        PopulateAssignedCeremonyData(v);
        return View(v);
    }

然后是我的Razor页面，第一个我希望用户点击链接将它们带到编辑/加入仪式页面的页面：

@model PIMS.Entities.Volunteer

@{
    ViewBag.Title = "VolunteerHub";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<li>@Html.ActionLink("Join Ceremony", "VolunteerCeremony", "Volunteers", null, new { id = @model.VolunteerId })</li>

这给了我new { id = @model.VolunteerId }

然后是我想要访问的页面：

    @model PIMS.Entities.Volunteer
@using Microsoft.AspNet.Identity

@{
    ViewBag.Title = "VolunteerCeremony";
}

<head>
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>

<h2>Apply for Ceremony</h2>


@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <hr />
        @Html.ValidationSummary(true)
        @Html.HiddenFor(model => model.VolunteerId)

        <div class="form-group">
            @Html.LabelFor(model => model.Name, new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Name, new { @readonly = "readonly" })
                @Html.ValidationMessageFor(model => model.Name)
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.VolunteerRole, "Volunteer Role", new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.VolunteerRole, new { @readonly = "readonly" })
                @Html.ValidationMessageFor(model => model.VolunteerRole)

            </div>
        </div>
        </div>



        <div class="row">

            <div class="col-md-2">&nbsp;</div>
            <div class="form-group col-md-4">
                <label class="control-label">Assigned Ceremonies</label>
                @Html.ListBox("selectedOptions", (MultiSelectList)ViewBag.SelectedCeremonies, new { @class = "form-control" })
            </div>

            <div class="form-group col-md-1" style="text-align:center">
                <div class="form-group">
                    <button type="button" id="btnRight" class="btn btn-warning btn-lg">
                        <span class="glyphicon glyphicon-arrow-right"></span>
                    </button>
                </div>
                <div class="form-group">
                    <button type="button" id="btnLeft" class="btn btn-success btn-lg">
                        <span class="glyphicon glyphicon-arrow-left"></span>
                    </button>
                    <div></div>
                </div>
            </div>

            <div class="form-group col-md-4">
                <label class="control-label">Available Ceremonies</label>
                @Html.ListBox("availOptions", (MultiSelectList)ViewBag.AvailCeremonies, new { @class = "form-control" })

            </div>

            <input type="submit" id="btnSubmit" value="Save" class="btn btn-default" />


        </div>
        <div style="text-align:center;">

        </div>

}

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
    @Scripts.Render("~/bundles/multisel")
}

有没有人对此有任何经验，因为它对我的申请来说很关键！

Answer 1

在mvc中有一些叫做会话变量的东西，就像app.config变量一样，你在控制器中声明它们就像这样

<header>
  <div class="logoWrap">
    <div class="logo">
      <img src="https://lorempixel.com/50/50/" alt="random logo">
    </div>
  </div>
</header>

一旦宣布，他们将在整个会议期间继续宣布。

然后你编写了注销代码，将Session变量重置为你的代码处理的东西，因为没有人登录或只是null。

授权：用户在登录时可以编辑自己的详细信息

1 个答案: