我有一个ActionResult TabNotes,它返回一个选项卡的视图,该选项卡在网格中显示来自数据库的注释。在选项卡上是ActionResult CreateNote的按钮,该按钮返回PartialView,并在保存注释后将我重定向回ActionResult TabNotes,
return RedirectToAction("TabNotes", new { modelEntity = "Phrase", id = itemId});
但是,使用此重定向转到操作结果TabNotes时,它不会显示网格。 javascript给出以下错误
Uncaught ReferenceError: $ is not defined (anonymous function)
Uncaught ReferenceError: ko is not defined (anonymous function)
第一次进入ActionResult时不会发生这种情况。使用断点在ActionResult选项卡的以下部分中:
[...]
Model.Grid.url = Url.Action("TabNoteData", new { id = Model.meta.entity, itemId = Model.meta.id.Value});
}
return View("TabNotes", Model);
}
第一次和第二次在模型中提供相同的输入值。该错误从何而来?
编辑:Firebug显示以下错误:
prompt aborted by user
throw Components.Exception...by user", Cr.NS_ERROR_NOT_AVAILABLE); nsPrompter.js (regel 462 <Systeem>
$ is not defined
$(document).ready(function(){$('#tblTN...tes/44?cmd=refresh" id="TNPhrase44"> 44?mod...=Phrase (regel 2)
ko is not defined
var viewModel=ko.mapping.fromJ...],"buttons":[],"PostAction":null}}); 44?mod...=Phrase (regel 12)
以下是javascript和代码
@model test.Web.Framework.Areas.Administration.Models.TabNotesModel
@using (UI.DocumentReadyScript())
{
if (Model.meta.id.HasValue)
{
UI.jQuery("#tbl" + Model.meta.modelname).flexigrid(Model.Grid);
}
}
<form method="post" action="@Url.Action("TabNotes", new { cmd = "refresh" })" id="@Model.meta.modelname">
<div class="ui-state-highlight ui-corner-all highlight" data-bind="visible: meta.message">
<span class="ui-icon ui-icon-info"></span><strong data-bind="text: meta.message">
</strong>
</div>
@using (UI.BeginBlock("Administation.TabNotes", UI.Label("Notes", "Notes").ToString(), test.Web.Framework.Core.enumIcons.pencil, false, false))
{
<table id="@("tbl" + Model.meta.modelname)">
</table>
}
</form>
<script type="text/javascript">
(function() {
var viewModel=ko.mapping.fromJS(@Html.Raw(UI.JavascriptEncode(Model)));
viewModel.getData=function() { return ko.mapping.toJSON( this ); };
viewModel.setData=function(data){
$('#tbl'+this.meta.modelname()).flexigrid( data.Grid);
ko.mapping.updateFromJS(this,data);
};
$('#@Model.meta.modelname').koform({viewmodel: viewModel , validate : {errorElement:'p' } } );
$('#@Model.meta.modelname').koform('applyBindings');
$('#load-partial').click(function() {
$('#partial').load('@Url.Action("CreateNote", "Entity", new {itemId = @Model.meta.id, modelEntity = "Phrase"})');
});
})();
</script>
<div id="partial"></div>
<button type="button" id="load-partial">Create Note</button>
'
public ActionResult CreateNote(
[ModelBinder(typeof(Models.JsonModelBinder))]
NoteModel Model, string cmd, long? itemId, string modelEntity)
{
if (cmd == "Save")
{
Model.meta.message = "Note saved";
test.Database.User User = UserRepository.GetUser(1);
Entity entity = NotesRepository.GetEntity("Phrase");
NotesRepository.StoreNote(Model.subject, Model.text, User, entity, itemId);
return RedirectToAction("TabNotes", new { modelEntity = "Phrase", id = itemId});
}
Model.meta.modelname = "CreateNote";
Model.meta.JsViewModelType = "EditNoteModel";
Model.meta.PostAction = Url.Action("CreateNote", new { cmd = "Save", itemId = itemId});
return PartialView("CreateNotePartial",Model);
}
'
public ActionResult TabNotes([ModelBinder(typeof(Models.JsonModelBinder))]
TabNotesModel Model, string cmd, string modelEntity, long? id)
{
if (modelEntity != null)
{
Model.meta.entity = modelEntity;
}
Entity entity = NotesRepository.GetEntity(Model.meta.entity);
if (id.HasValue)
{
Model.meta.id = id;
}
if (Model.meta.id.HasValue)
{
Model.meta.modelname = "TN" + Model.meta.entity + Model.meta.id.Value.ToString();
Dictionary<string, object> defaultValues = new Dictionary<string, object>();
defaultValues.Add("Entity", entity.EntityId);
defaultValues.Add("ItemId", Model.meta.id.Value);
Entity noteEntity = NotesRepository.GetEntity("Note");
var grid = UI.GetEntityFlexiGrid(noteEntity, true, true, true, true, defaultValues);
grid.buttons.Clear();
//grid.buttons.Add(new Button { onpress = "CreateNote", action = Url.Action("CreateNote"), name = "CreateNote", postdata = new { meta = Model.meta }});
grid.title = "";
Model.Grid = grid;
Model.Grid.url = Url.Action("TabNoteData", new { id = Model.meta.entity, itemId = Model.meta.id.Value});
}
return View("TabNotes", Model);
}
'
public GridResult TabNoteData(string id, long itemId, FlexigridRequest request, string cmd)
{
GridResult returnValue = null;
var entity = NotesRepository.GetEntity(id);
Entity noteEntity = NotesRepository.GetEntity("Note");
//var Acess = UIRepository.GetEntityAccess(id);
FlexigridConfiguration grid;
Dictionary<string, object> defaultValues = new Dictionary<string, object>();
defaultValues.Add("Entity", entity.EntityId);
defaultValues.Add("ItemId",itemId);
grid = UI.GetEntityFlexiGrid(noteEntity, true, true, true, true, defaultValues);
IQueryable q = NotesRepository.GetNotes(entity.EntityId, itemId);
var sortField = entity.EntityFields.SingleOrDefault(c => c.Name == request.sortname);
if (sortField == null)
{
request.sortname = grid.sortname;
}
IQueryable qdata = null;
if (!string.IsNullOrEmpty(request.sortname) && request.sortname != "undefined")
{
switch (request.sortorder)
{
case enumFlexigridRequestSortOrder.asc:
qdata = q.OrderBy(request.sortname + " ascending");
break;
case enumFlexigridRequestSortOrder.desc:
qdata = q.OrderBy(request.sortname + " descending");
break;
}
}
if (!string.IsNullOrEmpty(request.query) && !string.IsNullOrEmpty(request.qtype))
{
qdata = qdata.Where(request.qtype.SanitizeFieldExpression() + ".Contains(@0)", request.query);
}
if (request.q != null && request.q.Length > 0)
{
for (int i = 0; i < request.q.Length; i++)
{
var type = UIRepository.GetType(id);
var property = type.GetProperty(request.q[i]);
System.ComponentModel.TypeConverter tc = System.ComponentModel.TypeDescriptor.GetConverter(property.PropertyType);
string sv = request.v[i];
if (sv == null || sv == "null")
{
qdata = qdata.Where(request.q[i].SanitizeFieldExpression() + "=@0", (object)null);
}
else
{
object v = tc.ConvertFromString(sv);
qdata = qdata.Where(request.q[i].SanitizeFieldExpression() + "=@0", v);
}
}
}
string settingName = "Grid." + id + ".Rp";
var setting = UIRepository.GetQuery<test.Database.UserSetting>().SingleOrDefault(uc => uc.CreatedById == CurrentUser.UserId && uc.Name == settingName);
if (setting == null)
{
setting = UIRepository.Create<test.Database.UserSetting>();
setting.Name = settingName;
setting.Value = request.rp.ToString();
UIRepository.Add(setting);
}
else
{
if (request.rp.ToString() != setting.Value)
{
setting.Value = request.rp.ToString();
UIRepository.Update(setting);
}
}
int rowId = 0;
var datarows = new List<object>();
foreach (var record in qdata.Skip((request.page - 1) * request.rp).Take(request.rp).GetData())
{
var cellValues = new List<object>();
foreach (var gc in grid.colModel.OrderBy(c => c.di))
{
cellValues.Add(gc.ToString(UI, record));
}
var row = new { id = rowId, cell = cellValues.ToArray() };
datarows.Add(row);
rowId++;
}
returnValue = Grid(request.page, qdata.Count(), datarows.ToList());
return returnValue;
}
c#参考方案
该错误只能是以下三种情况之一:
您的JavaScript文件未正确加载到页面中
您有一个拙劣的jQuery版本。发生这种情况的原因是有人编辑了核心文件,或者插件可能覆盖了$变量。
您需要在页面完全加载之前以及jQuery完全加载之前运行JavaScript。
您应该检查Firebug网络面板,以查看文件是否已正确加载。如果不是,它将以红色突出显示并在其旁边显示“ 404”。如果文件加载正确,则意味着问题是第2个。
确保所有JavaScript代码都在代码块中运行,例如:
$(document).ready(function () {
//your code here
});
这将确保在初始化jQuery之后加载您的代码。
最后要检查的一件事是确保在加载jQuery之前没有加载任何插件。插件扩展了“ $”对象,因此,如果您在加载jQuery核心之前先加载插件,则将得到所描述的错误。
因此,为避免这种情况,您可以使用如下所示的“保镖”功能:
( function($) {
//We can now use $ as I implemented the bodyguard!
$(document).ready(function() {
//your code...
});
} ) ( jQuery );
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