About Yii
Yii is a
highly performant PHP Object Oriented framework that helps you build web
applications quickly. The way it is designed lets you focus on what
makes your application unique while it takes care of the more "boring"
code definition tasks. It follows the MVC pattern for a clean separation
of logic from presentation and it features quite a lot of security
enforcing functionality.
Yii gives a great boost to your application by letting you generate
automatically a skeleton for it, Models for your database and even CRUD
(create, read, update, delete) related code. All you have to do then is
customize everything to your liking without having to write the basics
any application would require. So let’s see how to install it and get
started developing with Yii (Yes, it is!)
This tutorial assumes you are already running an Ubuntu VPS (but
other Linux distributions will also work) with LAMP installed on it. If
you you can follow the steps in these tutorials to get you ready:
Installation
To install Yii, you need to get the latest version and extract it somewhere in your web server’s web root (probably
/var/www if you are running Apache). So let’s copy the link to the zip file of the latest release from
http://www.yiiframework.com/download/ and run the following command to download it to our VPS:
wget http://yii.googlecode.com/files/yii-1.1.13.e9e4a0.zip
Make sure you replace this link with the one of the latest release at
the time of your installation. Next, run the following command to unzip
the framework:
unzip yii-1.1.13.e9e4a0.zip
Make sure you replace the file name with the one you just downloaded.
If you don’t have Unzip installed on your system, run the following
command before trying to unzip the file:
sudo apt-get install unzip
After you successfully unzipped the framework, go ahead and rename
the folder to something more appropriate for you. Let’s say we name it
yii_framework:
mv yii-1.1.13.e9e4a0 yii_framework
Make sure you replace the folder name with the name of the extracted folder for your case.
Requirements
Yii requires your VPS to have PHP 5.1 or above installed, so let’s
use the Yii requirement checker to see where we stand. Point your
browser to the following url to display the checker:
http://example.com/yii_framework/requirements/index.php
Make sure you replace as necessary here to point to the respective file in the Yii framework. Now you should see the
Requirement Checker
page on which, if all goes well, the conclusion should be something
like: "Your server configuration satisfies the minimum requirements by
Yii." In this case, you can move on.
Creating your First Application
Yii has a very powerful functionality to automatically generate stuff
for you. The skeleton of your application is one such thing, so let’s
see how to do that. Navigate to where you would like the application to
be generated. This can be also outside of the folder where you extracted
the Yii framework. So let’s go back to the server web root and do it
there:
cd /var/www
Decide on the name of an application folder (let’s say
mysite) and run the following command:
php yii_framework/framework/yiic webapp mysite
Make sure the path corresponds to your environment. Select
Yes when you are prompted and now you have your new application under
/var/www/mysite.
To test it out, point your browser to that folder:
http://example.com/mysite/index.php
You should now see the homepage of your skeleton application. You
have a couple of pages already created as well as a contact form and
login/logout functionality. You can login with the following
credentials:
- username: admin
- password: admin
This is functionality you don’t need to create yourself.
Configuration
Since we are using LAMP, we don’t have much to configure. You’ll probably want to remove the
index.php from the the URL structure though. To do this, create an .htaccess file in the root folder of the application (
mysite) and paste in the following code:
RewriteEngine on
# if a directory or a file exists, use it directly
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
# otherwise forward it to index.php
RewriteRule . index.php
Save the file and exit.
Note: To use the .htaccess functionality in Apache, you'll need
mod_rewrite enabled on your VPS. To check for this, run the following command:
apache2ctl -M
If you see
rewrite_module in the list, you are good to go. If not, enable it with the following command:
a2enmod rewrite
Then, restart Apache for the changes to take effect:
sudo service apache2 restart
Additionally, ensure that your .htaccess file is enabled by setting
AllowOverride to
All in the virtual hosts file:
Options Indexes FollowSymLinks MultiViews
AllowOverride All
Order allow,deny
allow from all
Now you need to also tell the application you no longer want the
index.php in the URL. Open the
main.php file found in the
protected/config folder and uncomment the following block:
/*
'urlManager'=>array(
'urlFormat'=>'path',
'rules'=>array(
'/'=>'/view',
'//'=>'/',
'/'=>'/',
),
),
*/
Next, add the following to the
urlManager array:
'showScriptName' => false
The block should now look something like this:
'urlManager'=>array(
'urlFormat'=>'path',
'showScriptName' => false,
'rules'=>array(
'/'=>'/view',
'//'=>'/',
'/'=>'/',
),
),
Save the file and exit. Now if you navigate to your new application, you can go through the pages seeing cleaner URLs and no
index.php in the structure.
The skeleton application is by default connected to a SQLite database
that comes with the application, but also contains a commented out
template for connecting to a MySQL database. So what we need to do is to
comment out the first one and uncomment the latter one as well as
specify the information related to our own database (that we will create
in the next tutorial). To do this, open again the
main.php file located in the
protected/config folder of your application and comment out the following block:
'db'=>array(
'connectionString' => 'sqlite:'.dirname(__FILE__).'/../data/testdrive.db',
),
And remove the commenting around the following block:
/*
'db'=>array(
'connectionString' => 'mysql:host=localhost;dbname=testdrive',
'emulatePrepare' => true,
'username' => 'root',
'password' => '',
'charset' => 'utf8',
),
*/
Here, we can now add the connection information to the database we will create. We will give it a name (
db_tutorial)
and specify the username and password to access it. You can also now
create the empty database with this name and fill everything up before
we continue this tutorial in part 2.
Sumber : https://www.digitalocean.com/community/tutorials/how-to-install-and-setup-yii-php-framework-on-ubuntu-12-04
