Kam 02 Januari 2014 by Habibillah
Pujangga - Theme for Pelican Blog Engine
This is the demo site to show Pujangga, a tTheme for Pelican blog engine.
Happy coding.. :)
Sab 21 Desember 2013 by Habibillah
Creating Simple Jquery Modal Container Plugins Based On Bootrap And Bootstrap Modal
Much of web applications use modal dialog or pop up message on several page. So de idea is to make creating modal container at once and use it anywhere. It's easy as just pass the content to the plugins.
Firstly, add required JavaScript and CSS libraries to HTML page.
<!doctype html>
<html>
<head>
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css" />
<link rel="stylesheet" href="http://jschr.github.io/bootstrap-modal/css/bootstrap-modal-bs3patch.css" />
<link rel="stylesheet" href="http://jschr.github.io/bootstrap-modal/css/bootstrap-modal.css" />
<script src="http://code.jQuery.com/jquery-1.10.1.min.js" type="text/javascript"></script>
<script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js" type="text/javascript"></script>
<script src="http://jschr.github.io/bootstrap-modal/js/bootstrap-modalmanager.js" type="text/javascript"></script>
<script src="http://jschr.github.io/bootstrap-modal/js/bootstrap-modal.js" type="text/javascript"></script>
<script src="assets/js/generic-modal-container.js" type="text/javascript"></script>
</head>
...
...
<a href="#" class="show-modal-dialog btn btn-primary">Show Modal</a>
<a href="#" class="show-nested-modal-dialog btn btn-primary">Show Nested Modal</a>
I use libraries that commonly used over the world.Those are Jquery, Twitter bootstrap, and bootstrap Modal. And I will write my plugins on generic-modal-container.js file. Look at code below for the complete plugins.
(function ($) {
$.fn.showModal = function (header, content, callback) {
var HTML = '<div class="modal fade generic-modal">' +
' <div class="modal-dialog">' +
' <div class="modal-content">' +
' <div class="modal-header">' +
' <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>' +
' <h4 class="modal-title">' + header +
' </h4>' +
' </div>' +
' <div class="modal-body">' + content +
' </div>' +
' <div class="modal-footer">' +
' <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>' +
' <button type="button" class="btn btn-primary ok-button-dialog">Ok</button>' +
' </div>' +
' </div><!-- /.modal-content -->' +
' </div><!-- /.modal-dialog -->' +
'</div><!-- /.modal -->';
var container = $('<div></div>').html(HTML);
var newInstance = jQuery.extend(true, {}, container);
newInstance.find('.ok-button-dialog').bind('click', function() {
callback();
});
var modalElement = newInstance.find('.generic-modal');
modalElement.modal();
return modalElement;
}
}(jQuery));
First variable define bootstrap modal, and callback function will called when Ok button clicked. I can add more option to modify button dialog label and show/hide Ok button when used on alert message.
Next, I just call that jquery plugin when I need to show a modal. The contents of modal also can be filled by Ajax request. Here how to use that plugins.
$(document).ready(function() {
$('body').on('click', '.show-modal-dialog', function() {
//text content
var modalTitle = 'This is modal title';
var message = 'This is text message.';
var modal = $(this).showModal(modalTitle, message, function() {
alert('Ok button clicked');
modal.modal('hide');
});
});
});
var n = 0;
$(document).ready(function () {
$('body').on('click', '.show-nested-modal-dialog', function () {
//nested modal with html content
var modalTitle = 'This is modal title';
var message = '<a href="#" class="show-nested-modal-dialog btn btn-default">Show Modal ' + (++n) + '</a>';
var modal = $(this).showModal(modalTitle, message, function() {
var alertModal = $(this).showModal('Alert Message', 'Ok button clicked', function() {
alertModal.modal('hide');
});
});
});
});
Look at on JSFiddle for demo.
Rab 11 Desember 2013 by Habibillah
Quick Sample To Use jQuery Global AJAX Events
Sometime we write AJAX based application which has many ajax call. If an AJAX called, we add loading image indicator to show that request being processed. For simply way we use AJAX beforeSend() and complete() events for show and hide loading image indicator. See code below:
// call an AJAX request
$.ajax({
url: 'sample/url/target.php',
beforeSend: function() {
//call loading image indicator here
showImageLoading();
},
success: function(result) {
//do when success AJAX called successfully
},
complete: function() {
//call function to hide loading image indicator here
hideImageLoading();
}
});
// call an another AJAX request
$.ajax({
url: 'sample/url/another_target.php',
beforeSend: function() {
//call loading image indicator here
showImageLoading();
},
success: function(result) {
//do when success AJAX called successfully
},
complete: function() {
//call function to hide loading image indicator here
hideImageLoading();
}
});
When we write much of AJAX call, we waste our time to write beforeSend() and complete() events for each AJAX calls. It's also affect on total lines of code.
The better solution, we can use AJAX global events which always called when an AJAX request fired. Let's try to modify code above:
// This event is triggered if an Ajax request is started
// and no other Ajax requests are currently running.
$(document).ajaxStart(function() {
$(this).showLoading();
});
// This global event is triggered if there are no more
// Ajax requests being processed.
$(document).ajaxStop(function() {
$(this).hideLoading();
});
// call an AJAX request
$.ajax({
url: 'sample/url/target.php',
success: function(result) {
// do when success AJAX called successfully
}
});
// call an another AJAX request
$.ajax({
url: 'sample/url/another_target.php',
success: function(result) {
// do when success AJAX called successfully
}
});
That's, we just define global AJAX events once, and call many AJAX request. We can also disable global event for a particular AJAX request by passing global option to false on an AJAX request like below:
$.ajax({
global: false,
success: function(result) {
// do when success AJAX called successfully
}
});
The complete list of global and local jQuery AJAX events can be found at http://api.jquery.com/Ajax_Events/.
Jum 06 Desember 2013 by Habibillah
How To Trace And profiling Your PHP Code Performance?
Problem
This morning I got problem that performance of my application going slowly. This case just occur at this moment, not before. The application just worked yesterday and the days before.
Well, It's just on development phase and it scared me. If the application has worst performance on development, how can I step forward to production?
Getting a Solution
Firstly, I check the error message. PHP and Apache log file to ensure there is a code failures that guide me to fix this problem. All show no error reported except just "Application timeout". When I have no clue what pieces of code going wrong and work unexpected, I have an idea: "It's time to profiling my code. Maybe there is unstopped loops that I don't know where it is."
So I going to ensure my PHP XDebug running well. Here PHP.ini configation for XDebug:
[xdebug]
xdebug.remote_enable = On
xdebug.profiler_enable = On
xdebug.profiler_enable_trigger = On
xdebug.profiler_output_name = callgrind.out.%t.%p
xdebug.profiler_output_dir = "C:/standalone-apps/wamp/tmp"
xdebug.var_display_max_depth = -1
xdebug.var_display_max_children = -1
xdebug.var_display_max_data = -1
xdebug.auto_profile = 1
And PHP Info show me that Xdebug module has loaded properly.
And now, I run my application. Once application started, Xdebug will provide files that show us the application performance. This is just text file so we can read it directly using text editor like notepad. However, I confuse to read the information, so I decide to read using Qcachegrind.
Just run qcachegrind.exe and select xdebug profiler output file as look like image below.
And... gotcha...
Look! QCachegrind show me that CI_log->write_log() method take most of all time.
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