Question

我正在尝试构建一个自动完成功能，但是我在修补部分方面遇到了麻烦。

首先，我的观点包括这个字段：

<p>@Html.TextBoxFor(_item => _item.mCardName, Model.mCardName, new { @class = "cardText", id = "card_name"} )  </p>

很简单。接下来，javascript调用：

<script type="text/javascript">
    $(function() {
        $('#card_name').autocomplete({
            minlength: 5,
            source: "@Url.Action("ListNames", "Card")",
            select: function (event, ui) {
                $('#card_name').text(ui.item.value);
            },
        });
    });
</script>

调用此方法：

public ActionResult ListNames(string _term)
{
    using (BlueBerry_MTGEntities db = new BlueBerry_MTGEntities())
    {
        db.Database.Connection.Open();

        var results = (from c in db.CARD
                   where c.CARD_NAME.ToLower().StartsWith(_term.ToLower())
                   select new {c.CARD_NAME}).Distinct().ToList();

        JsonResult result = Json(results.ToList(), JsonRequestBehavior.AllowGet);

        return Json(result, JsonRequestBehavior.AllowGet);
    }
}

如果我插入“Power”字样，JSON数据会像这样回发：

{"ContentEncoding":null,"ContentType":null,"Data":[{"CARD_NAME":"Power Armor"},{"CARD_NAME":"Power Armor (Foil)"},{"CARD_NAME":"Power Artifact"},{"CARD_NAME":"Power Conduit"},{"CARD_NAME":"Power Conduit (Foil)"},{"CARD_NAME":"Power Leak"},{"CARD_NAME":"Power Matrix"},{"CARD_NAME":"Power Matrix (Foil)"},{"CARD_NAME":"Power of Fire"},{"CARD_NAME":"Power of Fire (Foil)"},{"CARD_NAME":"Power Sink"},{"CARD_NAME":"Power Sink (Foil)"},{"CARD_NAME":"Power Surge"},{"CARD_NAME":"Power Taint"},{"CARD_NAME":"Powerleech"},{"CARD_NAME":"Powerstone Minefield"},{"CARD_NAME":"Powerstone Minefield (Foil)"}],"JsonRequestBehavior":0,"MaxJsonLength":null,"RecursionLimit":null}

出于参考目的，以下是两个运行的脚本：

<script src="/Scripts/jquery-2.0.3.js"></script>
<script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>

但是没有显示任何内容。我希望看到结果显示像普通的自动完成一样。任何人都可以帮我解决问题吗？

修改

我一直在研究这个问题。我已经在那里发布了新的javascript，控制器方法和获得的结果。但事情仍然不起作用，我将不胜感激任何帮助。

Answer 1

对于自动填充，我使用javascriptserializer类。代码就是这样的。

My.Response.ContentType = "application/json"
Dim serializer As JavaScriptSerializer = New JavaScriptSerializer
Dim dt As DataTable = GetDataTable("proc_name", My.Request.QueryString("term"))
Dim orgArray As ArrayList = New ArrayList
For Each row As DataRow In dt.Rows
    Dim thisorg As New thisOrg
        thisorg.id = row("organization_child_id")
        thisorg.value = row("organization_name")
        orgArray.Add(thisorg)
Next
My.Response.Write(serializer.Serialize(orgArray))

Public Class thisOrg
    Public id As Integer
    Public value As String
End Class

基本上只需要一个数据表，将一系列对象添加到数组中，然后对其进行序列化。

Answer 2

最后！休息一下后，我得到了答案。

看到了吗？

public ActionResult ListNames(string _term)
{
    using (BlueBerry_MTGEntities db = new BlueBerry_MTGEntities())
    {
        db.Database.Connection.Open();

        var results = (from c in db.CARD
                   where c.CARD_NAME.ToLower().StartsWith(_term.ToLower())
                   select new {c.CARD_NAME}).Distinct().ToList();

        JsonResult result = Json(results.ToList(), JsonRequestBehavior.AllowGet);

        return Json(result, JsonRequestBehavior.AllowGet);
    }
}

碰巧，我正在构建另一个Json对象的Json对象。这就是数据未正确传递的原因。

我重建了这个方法，让它运行起来，然后像这样改进它：

public JsonResult ListCardNames(string term)
{
    using (BlueBerry_MagicEntities db = new BlueBerry_MagicEntities())
    {
        db.Database.Connection.Open();

        var results = from cards in db.V_ITEM_LISTING
                      where cards.CARD_NAME.ToLower().StartsWith(term.ToLower())
                      select cards.CARD_NAME + " - " + cards.CARD_SET_NAME;

        JsonResult result = Json(results.ToList(), JsonRequestBehavior.AllowGet);

        return result;
    }

我的javascript动作：

<script type="text/javascript">
    $(function() {
        $('#searchBox').autocomplete({
            source: function(request, response) {
                $.ajax({
                    url: "@Url.Action("ListCardNames")",
                    type: "GET",
                    dataType: "json",
                    data: { term: request.term },
                    success: function(data) {
                        response($.map(data, function(item) {
                            return { label: item, value1: item };
                        }));
                    }
                });
            },
            select:
                function(event, ui) {
                    $('#searchBox').val(ui.item);
                    $('#cardNameValue').val(ui.item);
                    return false;
                },
            minLength: 4
        });
    });
</script>

现在一切都像魅力一样。

自动完成：使用json数据显示结果

2 个答案: