Category Archives: Web

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February 8, 2013

Server-side pagination with AngularJS

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AngularJS is one of the most used Javascript frameworks nowadays.

A characteristic of this framework is the possibility of binding input or output parts of an HTML page to a model represented by standard JavaScript variables.

Looping through arrays and collections is made easy by the ngRepeat directive.
This directive becomes handy when dealing with lists and tables, especially if associated to the AngularJS filters, which allow you to handle pagination, filtering and sorting by adding just one line of code to your html.

Unfortunately, one of the limitations of this approach is that the filtering is done client-side, therefore it wouldn’t be an optimal solution when dealing with a substantial number of rows/records.

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posted

December 10, 2012

Writing a Secure Android App

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When it comes to developing an Android app that deals with sensitive information, you must take extra precautions to make sure that the information doesn’t fall into the wrong hands. Although Android devices come with state-of-the-art security features, app developers often don’t leverage them. Even if they do, they may not necessarily be using them properly. One simple security hole is all it takes to compromise your app’s security as well as the security of the servers/systems it’s connecting to.

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posted

November 2, 2012

A Lightweight jQuery Notification Bar

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Notifying users with quick messages and alerts in a website is one of the most recurring needs of a web developer.
Every time I need to implement something like that, I start looking around the web hoping to find some Javascript/jQuery plugin that would do the work for me.
The good thing is that a lot of people have already faced this problem.
The bad thing is that the results of the search are way too many and often very confusing.
Chances are that most of the time, you don’t really need a 3MB-super-fancy-hyper-customizable-highly-priced plugin, but you just want something that works, and that you can quickly incorporate into your code.

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posted

October 9, 2012

Zend DB Config.ini for Oracle DB options

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Anyone who has worked much with the Zend framework much will be familiar with the framework’s reliance on config files. I recently worked on a project where I needed to set some database configurations in a Zend config file and it took me some time to figure out the correct syntax for them. 

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posted

August 2, 2012

Where my docs at? (A smattering of pointers on AngularJS, one of which at least is difficult if not impossible to find on the Internet)

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AngularJS is a young framework, still so downy-soft that much of the advice you’ll find on support forums refers to an earlier and almost completely incompatible minor version.

So long as you don’t hit a blind spot in the documentation or the community support, it’s a great framework for rapid development, but as soon as you try to do something that isn’t public knowledge, you’ll be scratching your head for hours.

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posted

July 3, 2012

How to deploy your web app to Amazon EC2 using Capistrano

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What is Capistrano?

Capistrano is an open source tool mainly used to deploy web applications from source code management (SCM) to one or more servers. The aim of this guide is showing how to easily deploy your app to amazon EC2 using Capistrano. We can leverage its multi-stage extension to provide a different deployment strategy in different scenarios.

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posted

June 22, 2012

à la Flipboard

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Flipboard, iPad app of the year in 2010.
Sporting a very intuitive interface, flipboard is still an inspiration for designing applications.

A few months ago, we were asked to create a showcase iOS web app. Among the requested features, was to give it a flipboard effect.

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posted

May 23, 2012

ExtJS 4: Ext.Ajax and Timeout

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I was introduced to ExtJS a few months ago because I worked on a project that was heavily using the ExtJS 4 framework. Like many other frameworks, ExtJS had some really cool features, but also a few headaches. One headache I ran into was using the Ext.Ajax class to make a simple Ajax request. The Ext.Ajax class provides your basic event handling functionality for a successful/failed request. This class provides a timeout property that will execute an abort request when a certain amount of time has passed. However, I found that when a timeout does execute, a javascript error occurs. In Firebug, the error states:

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