preloading external json into select box then after search getting specific results - ajax

Question

so i am looking into loading external data in an select2 box where there is prepopulate results from the json
i have two issue - getting the data in and then only loading the first few but when a user searches it passes the request to the rest and then the specific json is returned
so the HTML is a simple as
<input type="hidden" id="e21" style="width:300px;"/>
the inital js is
$(document).ready(function () {
$('#e21').select2({
query: function (query){
var data = {results: []};
console.log(data);
$.each(preload_data, function(){
if(query.term.length == 0 || this.text.toUpperCase().indexOf(query.term.toUpperCase()) >= 0 ){
data.results.push({id: this.id, text: this.text });
}
});
query.callback(data);
}
});
$('#e21').select2('data', preload_data );
});
what that does is load in preload_data so that could be
var preload_data = [
{ id: 'user0', text: 'Disabled User'},
{ id: 'user1', text: 'Jane Doe'},
{ id: 'user2', text: 'John Doe', locked: true },
{ id: 'user3', text: 'Robert Paulson', locked: true },
{ id: 'user5', text: 'Spongebob Squarepants'},
{ id: 'user6', text: 'Planet Bob' },
{ id: 'user7', text: 'Inigo Montoya' }
];
an example is here
http://jsfiddle.net/dwhitmarsh/MfJ4B/10/
but instead of preload_data i want to load in load in a ajax call and pass the results
so i could use
var preload_data = $.ajax({
url: 'data/more.json',
method: 'get',
dataType: 'json'
});
but need to wait for the json to load and only want to load in the first 10.
then when a user actually searches i want to pass extra variables like
string: term, //search term
page_limit: 10, // page size
page: page // page number
page is part of the select 2
can anyone help?
btw the more.json looks like
{
"total": 8,
"result": [{
"id": "1",
"label": "Type",
"safeName":"type",
"jsonFile": "type.json"
},{
"id": "2",
"label": "Primary Applicant Name",
"safeName":"primaryApplicantName",
"jsonFile": "primary.json"
},{
"id": "3",
"label": "Address",
"safeName":"address",
"jsonFile": "address.json"
},{
"id": "4",
"label": "Product",
"safeName":"product",
"jsonFile": "product.json"
},{
"id": "5",
"label": "Verification",
"safeName": "verification",
"jsonFile": "verification.json"
},{
"id": "6",
"label": "Documents",
"safeName": "documents",
"jsonFile": "documents.json"
},{
"id": "7",
"label": "Suburb",
"safeName": "suburb",
"jsonFile": "suburb.json"
},{
"id": "8",
"label": "State",
"safeName": "state",
"jsonFile": "state.json"
}]
}