Develop Reference

Jquery Autocomplete not populating after error thrown

I am running a ASP.Net MVC application and using jQuery's Autocomplete in one of the textboxes to populate contract numbers after the 6th digit/character.
It is working flawlessly, until after an error is thrown for a validation check.
My code :
$(document).ready(function () {
$("#ContractNumber").autocomplete({
source: '#Url.Action("GetContractId")',
open: function () { $('ul.ui-autocomplete').hide().fadeIn() },
close: function () { $('ul.ui-autocomplete').show().fadeOut() },
minLength:6
});
});
The code that redirects to the correct controller to get the contract number is here:
$(document).ready(function () {
//$('body').on('focus', "#ContractNumber", function () {
$("#ContractNumber").autocomplete({
source: function (request, response) {
$.ajax({
url: "/PurchaseRequestDetail/GetContractId",
minLength: 1,
data: { Prefix: request.term },
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
response($.map(data, function (item) {
return { label: item.Name, value: item.Name };;
}))
}
})
}
});
Here is the autocomplete that is working fine, before the error:
I wanted this autocomplete to work, on focus of the textbox, whether a validation error thrown or not.
validation error:
The code that checks for ModelState if contract number is not found :
if (contractNo is null)
{
// row.ContractId = foundList.ContractId;
db.PurchaseRequestDetail.Add(newRow);
db.SaveChanges();
}
else if (contractNo != null)
{
if (foundList is null)
{
ModelState.AddModelError("ContractNumber", "Contract Number not in the database.");
// reload the drop down lists, they don't survive the trip to the server and back
viewModel.ContractList = GetContractList(viewModel.ContractId);
return View("CreateEdit", viewModel);
}
}
Any pointers in correcting this would be helpful.
TIA.

Asp .net ajax autocomplete not working. Webmethod is not getting called

Can somebody tell me why WebMethod is not firing in one page alone, this same code works in another page, but not in the page which i want it to work. I shifted this entire code into a new page and it works perfectly fine there, but if i use it in my actual page, it doesn't fire the webmethod. Not sure what's happening.
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.10.0.min.js" type="text/javascript"></script>
<script src="http://ajax.aspnetcdn.com/ajax/jquery.ui/1.9.2/jquery-ui.min.js" type="text/javascript"></script>
<link href="http://ajax.aspnetcdn.com/ajax/jquery.ui/1.9.2/themes/blitzer/jquery-ui.css" rel="Stylesheet" type="text/css" />
<script type="text/javascript">
$(function () {
$("[id$=txtSkill]").autocomplete({
source: function (request, response) {
$.ajax({
url: '<% =ResolveUrl("HRMCareerEAF.aspx/GetSkills") %>',
data: "{ 'prefix': '" + request.term + "'}",
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
response($.map(data.d, function (item) {
return {
label: item.split('-')[0],
val: item.split('-')[1]
}
}))
},
error: function (response) {
alert(response.responseText);
},
failure: function (response) {
alert(response.responseText);
}
});
},
select: function (e, i) {
$("[id$=hfSkillID]").val(i.item.val);
},
minLength: 1
});
});
</script>
<asp:TextBox ID="txtSkill" runat="server" style="text-align: center" />
[WebMethod(EnableSession = true)]
public static string[] GetSkills(string prefix)
{
HRMRecruitmentProcessDAL obj = new HRMRecruitmentProcessDAL();
DataSet ds = obj.BindMstcommon(HttpContext.Current.Session["CandidateID"].ToString(), "GetSkillsDD", "%" + prefix + "%");
List<string> skills = new List<string>();
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
skills.Add(string.Format("{0}-{1}", ds.Tables[0].Rows[i]["Skill_Desc"].ToString(), ds.Tables[0].Rows[i]["skill_id"].ToString() + "|" + ds.Tables[0].Rows[i]["Skill_GroupID"].ToString())); //ds.Tables[0].Rows[i]["Skill_GroupDesc"].ToString() + " : " +
}
return skills.ToArray();
}

Can you please check few things
1) check if you are able to call the api using rest api testing tools like postman
2) If you are able to access it can you please check if web developer tool console if it has any error like 404(Not found) or 500(Internal server error)
3) Modify your
data: "{ 'prefix': '" + request.term + "'}",
to
data: JSON.stringify({ prefix: request.term }),
Please check value of '<% =ResolveUrl("HRMCareerEAF.aspx/GetSkills") %>'
Also I am not sure but try getting rid of (EnableSession = true).

Thank you soo much for the support.
I found out the problem and solution.
Actual problem is that auto complete doesn't work after partial page postback and my txtskill is in 3rd view of asp:multiview which refreshes only the part of page inside my updatepanel.
Jquery methods do not bind if the page postbacks partially. I got solution in the following link.
Jquery Auto complete extender not working after postback
My altered code is as follows.
<script type="text/javascript">
$(function () {
SetAutoComplete();
});
$(document).ready(function () {
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_initializeRequest(InitializeRequest);
prm.add_endRequest(EndRequest);
// Place here the first init of the autocomplete
SetAutoComplete();
});
function InitializeRequest(sender, args) {
}
function EndRequest(sender, args) {
// after update occur on UpdatePanel re-init the Autocomplete
SetAutoComplete();
}
function SetAutoComplete() {
$("[id$=txtSkill]").autocomplete({
source: function (request, response) {
$.ajax({
url: '<% =ResolveUrl("HRMCareerEAF.aspx/GetSkills") %>',
data: JSON.stringify({ prefix: request.term }),
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
response($.map(data.d, function (item) {
return {
label: item.split('-')[0],
val: item.split('-')[1]
};
}))
}
});
},
select: function (e, i) {
$("[id$=hfSkillID]").val(i.item.val);
},
minLength: 1
});
}
</script>
Thank yo soo much for the support.

C# Webservice json data jquery ui with custom formatting

I'm using asp.net webservice to use it in jQuery UI autocomplete plugin and here is the data I'm getting.
{"d":[
{
"__type":"WebS.Model.SearchModel",
"MainCommodityId":1,
"MainCommodityName":"Pulses",
"SubcommodityId":3,
"SubCommodityName":"Urid Dal",
"BrandId":3,
"BrandName":"President"
},
{
"__type":"WebS.Model.SearchModel",
"MainCommodityId":1,
"MainCommodityName":"Pulses",
"SubcommodityId":1,
"SubCommodityName":"Red Gram",
"BrandId":4,
"BrandName":"President"
}
]
}
This is the script I'm using:
$(document).ready(function () {
$(".input-search").autocomplete({
source: function (request, response) {
$.ajax({
url: '/WebServices/GetAllBrandNames.asmx/getAllBrands',
data: "{ 'data': '" + request.term + "'}",
dataType: "json",
contentType: "application/json; charset=utf-8",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
response($.map(data.d, function (item) {
return {
value: item.BrandName,
label: item.SubCommodityName
}
}))
},
error: function (response) {
alert('error');
},
failure: function (response) {
alert('faii');
}
});
},
select: function (e, i) {
console.log(i.MainCommodityId);
console.log(i.SubcommodityId);
console.log(i.BrandId);
},
minLength: 1
}).autocomplete("instance")._renderItem = function (ul, item) {
return $("<li></li>")
.data("item.autocomplete", item)
.append("<a>" + "" + item.BrandName + " in " + item.MainCommodityName + " - " + item.SubCommodityName + "</a>")
.appendTo(ul);
};
});
The issues are:
When I tried to enter keyword say: pre the aforesaid output is coming in json. However, the list is returning only one "President" item where it should display 2 items.
The list is displaying "undefined in undefined - undefined" instead of values after adding .autocomplete("instance")._renderItem function.
console.logs are also undefined after selecting an item.
How can these issues fixed?

The default behavior of the select event is to update the input with ui.item.value. This code runs after your event handler.
Simply prevent the default action on select and focus using event.preventDefault() or by return false and use _renderItem for custom dropdown.
focus: function(event, ui) {
// prevent autocomplete from updating the textbox
event.preventDefault(); // or return false;
}
select: function(event, ui) {
// prevent autocomplete from updating the textbox
event.preventDefault();
//do something
}
References:
jQuery UI Autocomplete Examples
Example 2

Finally, I was able to achieve what I wanted. Answering my question as it may helpful to someone.
javascript:
$(document).ready(function () {
$(".input-search").autocomplete({
source: function (request, response) {
$.ajax({
url: '/WebServices/GetAllBrandNames.asmx/getAllBrands',
data: "{ 'data': '" + request.term + "'}",
dataType: "json",
type: "POST",
contentType: "application/json; charset=utf-8",
success: function (data) {
response($.map(data.d, function (item) {
// don't forget to $.map to (data.d where d is the top node
return {
// assign values from json response for further use
brandid: item.BrandId,
brand: item.BrandName,
maincommodityid: item.MainCommodityId,
maincommodity: item.MainCommodityName,
subcommodityid: item.SubcommodityId,
subcommodity: item.SubCommodityName
}
}));
},
error: function (response) {
alert('Server Error. Please try again.');
},
failure: function (response) {
alert('Failed to get result');
}
});
},
focus: function (event, ui) {
// prevent autocomplete from updating the textbox
event.preventDefault();
},
select: function (event, ui) {
// prevent autocomplete from updating the textbox
event.preventDefault();
// do further action here such as assigning id to hidden field etc.
$(".input-search").val(ui.item.brand);
// navigate to the selected item's url ex: /catalogue/1/1/pulses/red-gram/4/president
var str = "/catalogue/" + ui.item.maincommodityid + "/" +
ui.item.subcommodityid + "/" + $.trim(ui.item.maincommodity.replace(/\s+/g, '-').toLowerCase()) + "/" +
$.trim(ui.item.subcommodity.replace(/\s+/g, '-').toLowerCase()) + "/" + ui.item.brandid + "/" +
$.trim(ui.item.brand.replace(/\s+/g, '-').toLowerCase());
window.location = str;
},
minLength: 3
}).autocomplete("instance")._renderItem = function (ul, item) {
// get values and create custom display
var $a = $("<a></a>");
$("<strong></strong>").text(item.brand).appendTo($a);
$("<span></span>").text(" in ").appendTo($a);
$("<span></span>").text(item.subcommodity).appendTo($a);
return $("<li></li>").append($a).appendTo(ul);
};
});
CSS:
ul.ui-front {
z-index: 1200; // change z-index according to your UI.
}

Usually I do this way and Its work.
$(document).ready(function () {
var jsondata=array();
$.post("/WebServices/GetAllBrandNames.asmx/getAllBrands",{data: request.term},function(data){
var data=JSON.parse(data);
$.each(data.d, function( index, value ) {
jsondata[index].value=value;
});
$(".input-search").autocomplete({
source:jsondata,
//other property and events
})
});
I mean apply source JSON after completing request because sometimes if AJAX takes some time to load execution pointer still execute rest of code without waiting for response.
I did not test this code but I always do this way and never get your kind of error. Good Luck

show a dialog box , when hovering over the auto complete records

I have the following JavaScript code to do an autocomplete:
$("#Technology2_Tag").autocomplete({
source: function (request, response) {
$.ajax({
url: "#Url.Content("~/Switch/AutoComplete2")",
dataType: "json",
minLength: 2, delay: 2000,
data: {
term: request.term,
SearchBy: $("#ChoiceTag").prop("checked") ? $("#ChoiceTag").val() : $("#ChoiceName").val(),
},
success: function (data) {
response(data);
}
});
},
});
And I am returning the autocomplete records as JSON:
public ActionResult AutoComplete2(string term, string SearchBy)
{
if (SearchBy == "Tag")
{
var tech = repository.AllFindTechnolog(term).OrderBy(p => p.Tag).Select(a => new { label = a.Tag }).ToList();
return Json(tech, JsonRequestBehavior.AllowGet);
}
else
{
var tech = repository.FindActiveResourceByName(term, true).OrderBy(p => p.RESOURCENAME).Select(a => new { label = a.RESOURCENAME }).ToList();
return Json(tech, JsonRequestBehavior.AllowGet);
}
}
But my question is how I can show a dialog the contains additional info about the record, when the user hovers over an autocomplete record.
what i am thinking of is as follows:
when the user hovers over any autocomplete record, to fire a JavaScript function.
the function calls an action method, that returns JSON.
to build the dialog box using the returned JSON object.

First you need to create a div let's say with the id=mydiv which can be a dialog. Initialize it as a dialog.
Then in your autocomplete use focus event. Which will handle an Ajax function which will call an Action (this action can return a Partial view) and will fill your div with the description.
$("#mydiv").dialog();
$ ("#Technology2_Tag").autocomplete({
source: function (request, response) {
$.ajax({
url: "#Url.Content("~/Switch/AutoComplete2")",
dataType: "json",
minLength: 2, delay: 2000,
data: {
term: request.term,
SearchBy: $("#ChoiceTag").prop("checked") ? $("#ChoiceTag").val() : $("#ChoiceName").val(),
},
success: function (data) {
response(data);
}
});
},
focus: function(event,ui){
var element =ui.item.val;
$.ajax({
url: "#Url.Content("~/Switch/ActionDescription")",
dataType: "json",
data: {
hoverelment: element },
success: function (data) {
$('#myDiv').append(data);
$('#myDiv').show();
}
});
}
});
I gave you lines, you have to create another action which will receive a parameter, can send a partial view or just string.
public ActionResult ActionDescription(string hoverlement)
{
.........//linq queries to retrieve description by hoverelement
}
I hope it will help.

Alter the filter on autocomplete to allow sorting on complete string

I have a functioning autocomplete jQuery input control but there are two things it is doing that I would like to alter.
First, it fires again and again. I would like for the data to be returned once, cached and not called again.
Second, I would like for the user to type in the control and based on what they type be able to search the entire string and not just the beginning.
This is my functioning script that returns data to the autocomplete and WORKS.
<script type="text/javascript">
$(function () {
$('#datePicker').datepicker();
});
$(document).ready(function() {
$("#autocomplete").autocomplete({
source: function (request, response) {
$.ajax({
url: "FacilitiesAsync",
type: 'GET',
cache: true,
data: 'sourceDb=myDb',
dataType: 'json',
success: function (json) {
// call autocomplete callback method with results
response($.map(json, function (name) {
return {
label: name.label,
value: name.value
};
}));
},
error: function (xmlHttpRequest, textStatus, errorThrown) {
$("#autocomplete").text(textStatus + ', ' + errorThrown);
}
});
},
select: function (event, ui) {
$('#autocomplete').val(ui.item.label);
return false;
},
messages: {
noResults: '',
results: function () {
}
}
});
});
</script>
I found this bit of code that overrides the filter feature of the autocomplete but I have NO IDEA where to add this. I have tried several places to no avail....
// Overrides the default autocomplete filter function to search only from the beginning of the string
$("#autocomplete").autocomplete.filter = function (array, term) {
var matcher = new RegExp("\\b" + $.ui.autocomplete.escapeRegex(term), "i");
return $.grep(array, function (value) {
return matcher.test(value.label || value.value || value);
});
};
My input control looks like this.
<input id="autocomplete" />
I appreciate the direction...

To cache the data from your server, setup a separate function which handles (and caches, if necessary) the response from your ajax call:
var cachedResult = null;
function fetchResponse(callback) {
if (cachedResult) callback(cachedResult)
$.ajax({
url: "FacilitiesAsync",
type: 'GET',
cache: true,
data: 'sourceDb=myDb',
dataType: 'json',
success: function (json) {
// call autocomplete callback method with results
var cachedResult = $.map(json, function (name) {
return {
label: name.label,
value: name.value
};
});
callback(cachedResult);
},
error: function (xmlHttpRequest, textStatus, errorThrown) {
$("#autocomplete").text(textStatus + ', ' + errorThrown);
}
});
}
$(document).ready(function() {
$("#autocomplete").autocomplete({
source: function (request, response) {
fetchResponse(function(result) {
response(result)
})
}
});
});
As for the custom matcher, look no further than the docs, in the Using a custom source callback to match only the beginning of terms example. Your custom matcher only differs in the regex pattern. Note also that this is all done within the "source" callback.