9

Where to start...I can find similar things on the Internet as to how, but they never seem to work with my specific way of wanting to do something. I have tried with and without partial views with very little success.

Quick rundown: I have a strongly-typed View with an Ajax form. underneath the form, I have a foreach loop that repeats a code block. I need to be able to update the code block from the forms choices (filters).

Here's my View, 'FindATeacher.cshtml', as it currently stands (after trying many different ideas):

@model Teachers.Models.OmniModel
@{
    ViewBag.Title = "FindATeacher";
    Layout = "~/Views/Shared/_Layout.cshtml";

}
<h2>Find a Teacher</h2>
@using (Ajax.BeginForm("FilterTeachers", "Home", new AjaxOptions { HttpMethod = "Post", OnSuccess = "onSuccess" }))
{
    <div id="ContentFilter">
        <div class="filterLabels">
            <p>Search by Name</p>
            <p>Filter By Instrument</p>
            <p>Filter By City</p>
        </div>
        <div class="filterObjects">
            <p>
                <input type="text" id="nameTXT" />
                <button type="submit" id="findButton">find</button>
            </p>
            <p>@Html.DropDownList("InstrumentID", (SelectList)Model.Instruments, "-- Select an Instrument --", new { id = "instrumentDD" })</p>
            <p>@Html.DropDownList("CityID", (SelectList)Model.Cities, "-- Select a City --", new { id = "cityDD" })</p>
        </div>
    </div>
}
<hr />
@foreach (var r in Model.Teachers)
{
    <div id="ContentResults">
        <div id="avatar">
            <img src="i" />
        </div>

        <div id="demographics">
            <h6>@r.Teacher</h6>
            <strong>@r.StudioName</strong>
            <p><a href="#">@r.URL</a></p>
            <p>@r.StreetAddress</p>
            <p>@r.City, @r.AddressStateID @r.Zip</p>
            <p>@r.Phone</p>
            <p>@r.EmailAddress</p>
        </div>
        <div id="studioDetails">
            <p><strong>Instrument(s) Taught</strong></p>
            <p>
                @{
    var instrumentString = r.Instruments.Aggregate("", (a, b) => a + b.Instrument + ", ");
    if (instrumentString.Length != 0)
    {
        instrumentString = instrumentString.Remove(instrumentString.LastIndexOf(","));
    }
                }
                @instrumentString
            </p>
            <br />

            @if (r.Information != "" && r.Information != null)
            {
                <p><strong>Information</strong></p>
                <p>@r.Information</p>
            }
        </div>
    </div>
}

Now here's my Controller. I get the results back correctly in the Controller, just not updating the code block:

public ActionResult FindATeacher()
        {
            Model.Instruments = new SelectList(TeacherService.GetInstrumentList(0),"InstrumentID","Instrument");
            Model.Cities = new SelectList(TeacherService.GetCityList(),"CityID","City");
            Model.Teachers = TeacherService.GetTeacherList("", 0);
            return View(Model);
        }

        [HttpPost]
        public JsonResult FilterTeachers(String teacherName, String instrumentID, String cityID)
        {
            Model.Teachers = TeacherService.GetTeacherList("John", 0, 0);
            return Json(Model.Teachers);
        }

Thanks.

4

2 回答 2

14

@VishalVaishya 提出了正确的想法，但有一种更简单的方法，它不涉及自定义 javascript 代码：AjaxOptions 有一个 UpdateTargetId 属性，AJAX 工具包将解释为意味着您希望使用从控制器。

FindATeacher.cshtml：

@using (Ajax.BeginForm("FilterTeachers", "Home", new AjaxOptions { 
    HttpMethod = "Post", UpdateTargetId = "TeacherList" }))
{
    ...
}
<hr />
<div id="TeacherList">
    @Partial("TeacherList", Model.Teachers)
</div>

教师列表.cshtml

@model IEnumerable<Teacher>
@foreach(var teacher in Model)
{
   ...
}

控制器动作：

    [HttpPost]
    public ActionResult FilterTeachers(String teacherName, String instrumentID, String cityID)
    {
        Model.Teachers = TeacherService.GetTeacherList(teacherName, instrumentID, cityID);
        return PartialView("TeacherList", Model.Teachers);
    }
于 2013-10-28T04:14:45.897 回答
3

您可以尝试以下方法：

将您的 foreach 循环分离到另一个局部视图中。并在过滤器/单击事件上加载您的部分视图，并将过滤后的参数传递给您的控制器操作。

JS 更改事件代码将是这样的：

var teacherName = ''; //get your selected teachername
var instrumentID = ''; //get your selected instrumentid
var cityID = ''; //get your selected city id

var url = '@Url.Action("FilterTeachers", "ControllerName", new { teacherName = "teacher-Name", instrumentID="instrument-ID", cityID="city-ID" })';

url = url.replace("teacher-Name", teacherName).replace("instrument-ID", instrumentID).replace("city-ID", cityID);

$('#result').load(url);
于 2013-10-28T04:07:56.500 回答