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Author Archives: Rahul Chakraborty , Software Engineer

Angular JS – A New Era of Front End Programming
24 Mar, 2015

Angular JS – A New Era of Front End Programming

  • Rahul Chakraborty , Software Engineer
  • Open Source
  • no comments

Angular JS is an open source java-script MVC framework developed by Misco Hevery/Adam Abrons  and maintained by Google and individual  developers Community.

It is being described by Angular Team as the “Structural framework for dynamic web applications”. Its main motive is to make the development and testing of Single Page Applications(SPA) easier and effective by providing a client side MVC architecture.

It basically extends and adapt HTML vocabulary with some additional declarations that are useful for web applications. With the concept of Two way data binding using scope it facilitates the automatic synchronization of views and models.

The design goals of Angular JS includes the following points :

1. To decouple the Application logic with the DOM manipulation.
2. To decouple the server side of the application with the client side. It makes the development of both run in parallel.
3. To provide a complete package starting from designing the UI through writing business logic, to testing.

Lets see the Architectural Pattern Diagram which is self explaining :

pic

Just a simple example how to start with Angular JS

<!DOCTYPE html>

<html lang=”en”>
<head>
<script src=”https://ajax.googleapis.com/ajax/libs/angularjs/1.2.5/angular.min.js”></script>
</head>
<body ng-app=”myapp”>
<div ng-controller=”HelloController” >
<h2>Hello {{hello}} !</h2>
</div>
</body>
<script>
     angular.module(“myapp”, [])
      .controller(“HelloController”, function($scope) {
       $scope.hello = “World, AngularJS”;
    } );
</script>

Example Explained :

1. Here ng-app is a built-in directive of Angular JS which is needed to be defined to auto bootstrap the angular js application.
And ng-app contains the name of our module which we created in our JS code.
2. After that ng-controller attribute is used which tells Angular JS that which controller to use with this view.
3. Also you can see the {{hello}} text. This is a part of AngularJS’s template system which tells Angular to write the “model” value named hello   (given by  $scope.hello = “World, AngularJS”;) to the HTML at this location.
4. $scope is the  an object that refers to the application model. It holds the data to display in the view.
5. Its better to place HTML and JS code on different files to make MVC effective.

“ Just give a start you will really start loving it.”

16 Apr, 2013

Zend Framework

  • Rahul Chakraborty , Software Engineer
  • Business,Company,Open Source
  • no comments

About Zend Framework, it is an open-source scripting engine or a software framework for PHP developed by the company Zend.

About its architecture it is very flexible so that you can build interactive web applications and web services very easily. Its main strength is its Modular Approach which contains Model-View-Controller design. This not only makes the code reusable but also makes it easily maintainable.

MVC is the term which we can define as an architectural pattern and is being used in Software Engineering. As we know when the product go on extending then its complexity increases and so a large amount of data is being presented to the end user. So, in Zend Framework we maintain the user interface and the logic in different places so that we can reorganinze the data without affecting the UI. To do so Zend provides an another component called Controller which separates the bussiness logic and the UI.

Zend Framework provides a very good platform to work and is the reason why PHP is being used for big enterprise applications.

If we talk about the database then Zend framework provides access to various types of RDBMS through an object-oriented and database-independent interface . There are a lot of databases that are being supported by Zend Framework . For eg., Microsoft SQL Server, IBM DB2, Oracle, MySQL, SQLite and PostgreSQL .

If we talk about Web Services then Zend Framework provides various classes to publish Web Services and feeds.

Zend Framework has made the common application development tasks quick and easy. For example, solutions for authentication, email, caching, filtering input, sessions, and others are included.

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