Remote data querying for Twitter Bootstrap 2.0 Typeahead without modifications

remote-typeahead.js

<script>
// Charles Lawrence - Feb 16, 2012. Free to use and modify. Please attribute back to @geuis if you find this useful
// Twitter Bootstrap Typeahead doesn't support remote data querying. This is an expected feature in the future. In the meantime, others have submitted patches to the core bootstrap component that allow it. 
// The following will allow remote autocompletes *without* modifying any officially released core code. 
// If others find ways to improve this, please share.

    var autocomplete = $('#searchinput').typeahead()
        .on('keyup', function(ev){

            ev.stopPropagation();
            ev.preventDefault();

            //filter out up/down, tab, enter, and escape keys
            if( $.inArray(ev.keyCode,[40,38,9,13,27]) === -1 ){

                var self = $(this);
                
                //set typeahead source to empty
                self.data('typeahead').source = [];

                //active used so we aren't triggering duplicate keyup events
                if( !self.data('active') && self.val().length > 0){

                    self.data('active', true);

                    //Do data request. Insert your own API logic here.
                    $.getJSON("http://search.twitter.com/search.json?callback=?",{
                        q: $(this).val()
                    }, function(data) {

                        //set this to true when your callback executes
                        self.data('active',true);

                        //Filter out your own parameters. Populate them into an array, since this is what typeahead's source requires
                        var arr = [],
                            i=data.results.length;
                        while(i--){
                            arr[i] = data.results[i].text
                        }

                        //set your results into the typehead's source 
                        self.data('typeahead').source = arr;

                        //trigger keyup on the typeahead to make it search
                        self.trigger('keyup');

                        //All done, set to false to prepare for the next remote query.
                        self.data('active', false);

                    });

                }
            }
        });
</script>

<input type="text" id="searchinput" data-provide="typeahead">

thanks for the code - it works albeit it sure breaks at times. I use it as below but when correcting the query - it just doesn't work.

    .on('keyup', function(ev){

ev.stopPropagation();
ev.preventDefault();

//filter out up/down, tab, enter, and escape keys
if( $.inArray(ev.keyCode,[40,38,9,13,27]) === -1 ){

    var self = $(this);

    //set typeahead source to empty
    self.data('typeahead').source = [];

    //active used so we aren't triggering duplicate keyup events
    if( !self.data('active') && self.val().length > 0){

        self.data('active', true);

        //Do data request. Insert your own API logic here.
        $.getJSON($baseLocation+"updatejs?callback=",{
            term: $(this).val()
        }, function(data) {

            //set this to true when your callback executes
            self.data('active',true);

            //Filter out your own parameters. Populate them into an array, since this is what typeahead's source requires
            arr = [],
                i=data.length;
            while(i--){
                arr[i] = data[i].name
            }

            //set your results into the typehead's source
            self.data('typeahead').source = arr;

            //trigger keyup on the typeahead to make it search
            self.trigger('keyup');

            //All done, set to false to prepare for the next remote query.
            self.data('active', false);

        });

    }
}

});

The function doesn't go in after
"var autocomplete = $('#searchinput').typeahead().on('keyup', function(ev){"

What did i do wrong? i downloaded the code but didnt work for me. Should i install an extra reposity?
Thank you.

Thanks for your work and sorry for my English.

Here my modifications for my own requirements: You can set the url in input using "data-link", useful if you have lot of differently autocomplete sources.

    // Disable browser autocomplete
    $('.typeaheadlink').attr('autocomplete','off');

    var autocomplete = $('.typeaheadlink').typeahead()
        .on('keyup', function(ev){

            ev.stopPropagation();
            ev.preventDefault();

            //filter out up/down, tab, enter, and escape keys
            if( $.inArray(ev.keyCode,[40,38,9,13,27]) === -1 ){

                var self = $(this);

                // We get the URL from input
                var urljson = self.attr("data-link");

                //set typeahead source to empty
                self.data('typeahead').source = [];

                //active used so we aren't triggering duplicate keyup events
                if( !self.data('active') && self.val().length > 0){

                    self.data('active', true);

                    //Do data request.
                    $.ajax({
                        url: urljson,
                        type: 'get',
                        data: {q: $(this).val()},
                        dataType: 'json',
                        success: function(data) {

                            //set this to true when your callback executes
                            self.data('active',true);

                            //set your results into the typehead's source 
                            self.data('typeahead').source = data;

                            //trigger keyup on the typeahead to make it search
                            self.trigger('keyup');

                            //All done, set to false to prepare for the next remote query.
                            self.data('active', false);
                        }
                    });

                }
            }
        });

<input name="myautocompleteinput" class="typeaheadlink" data-provide="typeahead" data-items="4" data-link="http://domain.com/mydata.php" maxlength="255" type="text" id="myautocompleteinput">

Maybe this can be useful for someone.
Thanks again!
Cris

Worked Like a charm :) Thank you :)

Thanks for writing this up. It has helped me a lot. However I would recommend using the official twitter typeahead library and not the one that comes packaged with bootstrap.js. It allows you to do a lot more and has remote lookups built in. You can find it here

http://twitter.github.io/typeahead.js/

The api is different to the one packaged into bootstrap. I just downloaded a custom version of bootstrap and removed typeahead and started using the lib above. It seems much more flexible :)

Thanks

Hamza

hi is there any full document available for yii bootstrap type ahead from database . i have to retrieve data from data from data base.but there is no documentation available anywhere. while i tried for that but not found anywhere..

i have to find patient name form data base but not able find that name.form that..wheater key event is working or ajax call is not working i dnt get the solution.