I'm using jquery-ui-autocomplete (actually, a catcomplete attached to a search box). It works vey well as long as I use a static-defined array of items as source.
For performance reasons, I don't want the autocomplete to send Ajax requests to a PHP script making %like% requests to MySQL. So, I generated a JSON file from the DB, containing every item that can be matched in the search (about 20-30 items, from many sql tables). I'd like to read/parse the file only once, as the page loads or when the user starts to type in the search box.
I'm stuck here. I tried to attach an Ajax call to the .catcomplete() (code below). I also tried to make a getJSON call and create the .catcomplete in its success() method. Both ways fail silently.
I'm kind of new to JS/jQuery stuff, I already like it, but I'm a bit lost. Any help/solution/pointer to usefull doc would be greatly appreciated.
Thank you very much!
Here is the HTML : (real simple)
<form id="searchform" method="get" role="search">
<input id="searchfield" />
<input type="submit" name="go" value="go!" />
</form>
Here is my JS code :
$( "#searchfield" ).catcomplete({
delay: 0,
source: function( request, response ) {
$.ajax({
url: "/path/to/cache.json",
dataType: "json",
data: {term: request.term},
success: function(data) {
response($.map(data, function(item) {
return {
label: item.label,
category: item.category,
desc: item.desc
};
}));
}
});
},
minlength:0
});
Sample JSON data:
[
{ label: "lbl1", category: "cat1", desc: "desc1"},
{ label: "lbl2", category: "cat1", desc: "desc2"},
{ label: "lbl3", category: "cat1"}
]
Your datasource is throwing an parse error since the json format is not propper, in json the keys also have to be enclosed within "
.
{
"list" : [{
"label" : "lbl1",
"category" : "cat1",
"desc" : "desc1"
}, {
"label" : "lbl2",
"category" : "cat1",
"desc" : "desc2"
}, {
"label" : "lbl3",
"category" : "cat1"
}]
}
Demo: Plunker
If you want the request term based searches, then you will have to make some more changes
var xhr;
$( "input" ).catcomplete({
delay: 0,
source: function( request, response ) {
var regex = new RegExp(request.term, 'i');
if(xhr){
xhr.abort();
}
xhr = $.ajax({
url: "data.json",
dataType: "json",
cache: false,
success: function(data) {
response($.map(data.list, function(item) {
if(regex.test(item.label)){
return {
label: item.label,
category: item.category,
desc: item.desc
};
}
}));
}
});
},
minlength:0
});
Demo: Plunker
Try flipping it around, so on page-load you grab it once, then instantiate the autocomplete.
$(function() {
$.ajax({
url: "/path/to/cache.json",
dataType: "json",
data: {term: request.term},
success: function(data) {
var cat_data = $.map(data, function(item) {
return {
label: item.label,
category: item.category,
desc: item.desc
};
});
$("#searchfield").catcomplete({
delay: 0,
source: cat_data,
minlength:0
});
}
});
});
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