"query function not defined for Select2 undefined error"
JavascriptRuntime ErrorJquery Select2Javascript Problem Overview
Trying to use Select2 and getting this error on multiple item input/text field:
"query function not defined for Select2 undefined error"
Javascript Solutions
Solution 1 - Javascript
Covered in this google group thread
> The problem was because of the extra div that was being added by the select2. Select2 had added new div with class "select2-container form-select" to wrap the select created. So the next time i loaded the function, the error was being thrown as select2 was being attached to the div element. I changed my selector...
Prefix select2 css identifier with specific tag name "select":
$('select.form-select').select2();
Solution 2 - Javascript
This error message is too general. One of its other possible sources is that you're trying to call select2()
method on already "select2ed" input.
Solution 3 - Javascript
In case you initialize an empty input do this:
$(".yourelement").select2({
data: {
id: "",
text: ""
}
});
Read the first comment below, it explains why and when you should use the code in my answer.
Solution 4 - Javascript
I also had this problem make sure that you don't initialize the select2 twice.
Solution 5 - Javascript
For me this issue boiled down to setting the correct data-ui-select2 attribute:
<input type="text" data-ui-select2="select2Options.projectManagers" placeholder="Project Manager" ng-model="selectedProjectManager">
$scope.projectManagers = {
data: [] //Must have data property
}
$scope.selectedProjectManager = {};
If I take off the data
property on $scope.projectManagers
I get this error.
Solution 6 - Javascript
This issue boiled down to how I was building my select2 select box. In one javascript file I had...
$(function(){
$(".select2").select2();
});
And in another js file an override...
$(function(){
var employerStateSelector =
$("#registration_employer_state").select2("destroy");
employerStateSelector.select2({
placeholder: 'Select a State...'
});
});
Moving the second override into a window load event resolved the issue.
$( window ).load(function() {
var employerStateSelector =
$("#registration_employer_state").select2("destroy");
employerStateSelector.select2({
placeholder: 'Select a State...'
});
});
This issue blossomed inside a Rails application
Solution 7 - Javascript
I also got the same error when using ajax with a textbox then i solve it by remove class select2 of textbox and setup select2 by id like:
$(function(){
$("#input-select2").select2();
});
Solution 8 - Javascript
It seems that your selector returns an undefined element (Therefore undefined error
is returned)
In case the element really exists, you are calling select2 on an input
element without supplying anything to select2, where it should fetch the data from. Typically, one calls .select2({data: [{id:"firstid", text:"firsttext"}])
.
Solution 9 - Javascript
Also got the same error when using ajax.
If you're using ajax to render forms with select2, the input_html class must be different from those NOT rendered using ajax. Not quite sure why it works this way though.
Solution 10 - Javascript
if (typeof(opts.query) !== "function") {
throw "query function not defined for Select2 " + opts.element.attr("id");
}
This is thrown becase query does not exist in options. Internally there is a check maintained which requires either of the following for parameters
- ajax
- tags
- data
- query
So you just need to provide one of these 4 options to select2 and it should work as expected.
Solution 11 - Javascript
I got the same error. I have been using select2-3.5.2
This was my code which had error
$('#carstatus-select').select2().val([1,2])
Below code fixed the issue.
$('#carstatus-select').val([1,2]);
Solution 12 - Javascript
I have a complicated Web App and I couldn't figure out exactly why this error was being thrown. It was causing the JavaScript to abort when thrown.
In select2.js I changed:
if (typeof(opts.query) !== "function") {
throw "query function not defined for Select2 " + opts.element.attr("id");
}
to:
if (typeof(opts.query) !== "function") {
console.error("query function not defined for Select2 " + opts.element.attr("id"));
}
Now everything seems to work properly but it is still logging in error in case I want to try and figure out what exactly in my code is causing the error. But for now this is a good enough fix for me.
Solution 13 - Javascript
use :
try {
$("#input-select2").select2();
}
catch(err) {
}