Book Image

CouchDB and PHP Web Development Beginner's Guide

By : Tim Juravich
Book Image

CouchDB and PHP Web Development Beginner's Guide

By: Tim Juravich

Overview of this book

CouchDB is a NoSQL database which is making waves in the development world. It's the tool of choice for many PHP developers so they need to understand the robust features of CouchDB and the tools that are available to them.CouchDB and PHP Web Development Beginner's Guide will teach you the basics and fundamentals of using CouchDB within a project. You will learn how to build an application from beginning to end, learning the difference between the "quick way"ù to do things, and the "right way"ù by looking through a variety of code examples and real world scenarios. You will start with a walkthrough of setting up a sound development environment and then learn to create a variety of documents manually and programmatically. You will also learn how to manage their source control with Git and keep track of their progress. With each new concept, such as adding users and posts to your application, the author will take you through code step-by-step and explain how to use CouchDB's robust features. Finally, you will learn how to easily deploy your application and how to use simple replication to scale your application.
Table of Contents (17 chapters)
CouchDB and PHP Web Development Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
4
Starting your Application

Time for action – handling the current user


With most of the pieces of the puzzle in place, let's go through the process of changing the layout for users, depending on if they are logged in or not.

  1. 1. Let's add a function called current_user in classes/user.php, so that we can retrieve the current user's username from the session.

    public static function current_user() {
    session_start();
    return $_SESSION['username'];
    session_write_close();
    }
    
  2. 2. Add a public static function called is_authenticated into classes/user.php so we can see if the user is authenticated or not.

    public static function is_authenticated() {
    if (self::current_user()) {
    return true;
    } else {
    return false;
    }
    }
    
  3. 3. Now that we have our authentication in order, let's tighten up the navigation in layout.php, so that different navigation items are displayed depending on if the user is logged in or not.

    <ul class="nav">
    <li><a href="<?php echo $this->make_route('/') ?>">Home</a></li>
    <?php...