I am attempting to do some duplication checking in my MVC5/EF Code-First application. On my Create()
Asset View, I show/hide textboxes for entering a new location_dept
/location_room
via JS:
我正在尝试在我的MVC5/EF代码优先应用程序中进行一些重复检查。在我的Create()资产视图中,我将显示/隐藏文本框,以便通过JS输入新的location_dept/location_room:
<div class="form-group">
@*@Html.LabelFor(model => model.Location_Id, "Location_Id", htmlAttributes: new { @class = "control-label col-md-2" })*@
<span class="control-label col-md-2">Location:</span>
<div class="col-md-4">
@*@Html.DropDownList("Location_Id", null, htmlAttributes: new { @class = "form-control dropdown" })*@
@Html.DropDownListFor(model => model.Location_Id, (SelectList)ViewBag.Model_List, htmlAttributes: new { @class = "form-control dropdown", @id = "selectLocation" })
@Html.ValidationMessageFor(model => model.Location_Id, "", new { @class = "text-danger" })
</div>
<div class="col-md-2">
<div class="btn-group">
<button id="createNewLocation" type="button" class="btn btn-success" aria-expanded="false">CREATE NEW</button>
</div>
</div>
<div class="col-md-4">
<div id="createLocationFormContainer" style="display:none">
<form action="/createNewLocation">
<input type="text" id="textNewLocationDept" name="location_dept" placeholder="New Department" />
<input type="button" id="submitNewLocation" value="Submit" />
<input type="button" id="cancelNewLocation" value="Cancel" /><br />
<input type="text" id="textNewLocationRoom" name="location_room" placeholder="New Room" />
</form>
</div>
</div>
</div>
JS:
JS:
$('#createNewLocation').click(function () {
$('#createLocationFormContainer').show();
})
$('#cancelNewLocation').click(function () {
$('#createLocationFormContainer').hide();
})
$('#submitNewLocation').click(function () {
var form = $(this).closest('form');
var data = { location_dept: document.getElementById('textNewLocationDept').value, location_room: document.getElementById('textNewLocationRoom').value };
// CORRECTLY SHOWING
alert("Dept: " + data.location_dept + " | Room: " + data.location_room);
$.ajax({
type: "POST",
dataType: "JSON",
url: '@Url.Action("createNewLocation", "INV_Assets")',
data: data,
success: function (resp) {
if (resp.LocationRoomExists)
{
alert("Room Location [" + resp.Text + "] already exists. Please select from the DropDown.");
} else {
// FALSE
alert("LocationRoomExists: " + resp.LocationRoomExists);
// `undefined` returned for both values
alert("Department: " + resp.location_dept + " | Room: " + resp.location_room);
$ $('#selectLocation').append($('<option></option>').val(resp.ID).text(resp.LocDept + "| " + resp.LocRoom));
$('#createLocationFormContainer').hide();
var count = $('#selectLocation option').size();
$("#selectLocation").prop('selectedIndex', count - 1);
}
},
error: function () {
alert("ERROR - Something went wrong adding new Room Location [" + resp.Text + "]!");
$('#createLocationFormContainer').hide();
}
});
});
I then use a JSON POST
to my controller action to create the new INV_Location
:
然后,我使用JSON POST到我的控制器操作中来创建新的INV_Location:
[HttpPost]
public JsonResult createNewLocation(string department, string room)
{
INV_Locations location = new INV_Locations()
{
// ID auto-set during save.
location_dept = department,
location_room = room,
created_date = DateTime.Now,
created_by = System.Environment.UserName
};
var duplicateLocation = db.INV_Locations.FirstOrDefault(x => x.location_room.ToUpper() == location.location_room.ToUpper());
try
{
if (duplicateLocation == null)
{
if (ModelState.IsValid)
{
db.INV_Locations.Add(location);
db.SaveChanges();
}
}
else
{
location = duplicateLocation;
}
}
catch (Exception ex)
{
Elmah.ErrorSignal.FromCurrentContext().Raise(ex);
}
return Json(new { ID = location.Id, LocDept = location.location_dept, LocRoom = location.location_room, LocationRoomExists = (duplicateLocation != null) }, JsonRequestBehavior.AllowGet);
}
When I run the code all together, I get a result in my dropdown of undefined|undefined
. After some debugging I determined that my controller is not receiving a department
/room
value (null
).
当我一起运行这些代码时,会得到未定义|的下拉结果。经过一些调试,我确定我的控制器没有接收到一个部门/房间值(null)。
Can anyone spot what might be going wrong with my AJAX call to my controller?
谁能指出我对控制器的AJAX调用有什么问题吗?
EDIT:
编辑:
$('#selectLocation').append($('<option></option>').val(resp.ID).text(resp.LocDept + "| " + resp.LocRoom));
(“# selectLocation”).append(美元(“ <选项> < /选项>”).val(resp.ID)。text(分别地。);
1 个解决方案
#1
1
You need to make sure your parameters match that you are sending:
您需要确保您的参数与您发送的参数匹配:
var data = { department: document.getElementById('textNewLocationDept').value, room: document.getElementById('textNewLocationRoom').value };
You also need to match the data that you are returning from your controller.
您还需要匹配从控制器返回的数据。
Your action returns this:
你的行动回报:
new { ID = location.Id, LocDept = location.location_dept,
LocRoom = location.location_room,
LocationRoomExists = (duplicateLocation != null) }
So your bind needs to match the properties i.e.
所以绑定需要匹配属性。
$('#selectLocation').append($('<option></option>')
.val(resp.Id).text(resp.LocRoom + "| " + resp.LocDept ));
#1
1
You need to make sure your parameters match that you are sending:
您需要确保您的参数与您发送的参数匹配:
var data = { department: document.getElementById('textNewLocationDept').value, room: document.getElementById('textNewLocationRoom').value };
You also need to match the data that you are returning from your controller.
您还需要匹配从控制器返回的数据。
Your action returns this:
你的行动回报:
new { ID = location.Id, LocDept = location.location_dept,
LocRoom = location.location_room,
LocationRoomExists = (duplicateLocation != null) }
So your bind needs to match the properties i.e.
所以绑定需要匹配属性。
$('#selectLocation').append($('<option></option>')
.val(resp.Id).text(resp.LocRoom + "| " + resp.LocDept ));