Yii2 Application Development Cookbook

Yii2 Application Development Cookbook - Third Edition

By : Sergey Ivanov, Andrew Bogdanov, Dmitry Eliseev

Buy this Book

Yii2 Application Development Cookbook - Third Edition

By: Sergey Ivanov, Andrew Bogdanov, Dmitry Eliseev

Buy this Book

Overview of this book

Yii is a free, open source web application development framework written in PHP5 that promotes clean DRY design and encourages rapid development. It works to streamline your application development time and helps to ensure an extremely efficient, extensible, and maintainable end product. Being extremely performance optimized, Yii is a perfect choice for any size project. However, it has been built with sophisticated, enterprise applications in mind. You have full control over the configuration from head-to-toe (presentation-to-persistence) to conform to your enterprise development guidelines. It comes packaged with tools to help test and debug your application, and has clear and comprehensive documentation. This book is a collection of Yii2 recipes. Each recipe is represented as a full and independent item, which showcases solutions from real web-applications. So you can easily reproduce them in your environment and learn Yii2 fast and without tears. All recipes are explained with step-by-step code examples and clear screenshots. Yii2 is like a suit that looks great off the rack, but is also very easy to tailor to fit your needs. Virtually every component of the framework is extensible. This book will show how to use official extensions, extend any component, or write a new one. This book will help you create modern web applications quickly, and make sure they perform well using examples and business logic from real life. You will deal with the Yii command line, migrations, and assets. You will learn about role-based access, security, and deployment. We’ll show you how to easily get started, configure your environment, and be ready to write web applications efficiently and quickly.

Yii2 Application Development Cookbook Third Edition

Credits

About the Authors

About the Reviewer

www.PacktPub.com

Preface

Free Chapter

Fundamentals

Introduction

Installing the framework

Application templates

Dependency injection container

Service locator

Code generation

Configuring components

Working with events

Using external code

Routing, Controllers, and Views

Introduction

Configuring URL rules

Generating URLs

Using regular expressions in URL rules

Using a base controller

Using standalone actions

Creating a custom filter

Displaying static pages

Using flash messages

Using the controller context in a view

Reusing views with partials

Using blocks

Using decorators

Defining multiple layouts

Pagination and sorting data

ActiveRecord, Model, and Database

Introduction

Getting data from a database

Defining and using multiple DB connections

Customizing the ActiveQuery class

Processing model fields with AR event-like methods

Automating timestamps

Setting up an author automatically

Setting up a slug automatically

Transactions

Replication and read-write splitting

Implementing single table inheritance

Forms

Introduction

Writing your own validators

Uploading files

Adding and customizing CaptchaWidget

Customizing Captcha

Creating a custom input widget

Tabular input

Conditional validation

Complex forms with multiple models

AJAX-dependent drop-down list

AJAX validation

Creating a custom client-side validation

Security

Introduction

Authentication

Using controller filters

Preventing XSS

Preventing SQL injections

Preventing CSRF

Using RBAC

Encrypting/Decrypting data

RESTful Web Services

Introduction

Creating a REST server

Official Extensions

Authentication client

SwiftMailer e-mail library

Faker fixture data generator

Imagine library

MongoDB driver

ElasticSearch engine adapter

Gii code generator

Pjax jQuery plugin

Redis database driver

Extending Yii

Introduction

Creating helpers

Creating model behaviors

Creating components

Creating reusable controller actions

Creating reusable controllers

Creating a widget

Creating CLI commands

Creating filters

Creating modules

Creating a custom view renderer

Creating a multilanguage application

Making extensions distribution-ready

Performance Tuning

Following best practices

Speeding up session handling

Using cache dependencies and chains

Profiling an application with Yii

Leveraging HTTP caching

Combining and minimizing assets

Running Yii2 on HHVM

Deployment

Introduction

Changing the Yii directory layout

Moving an application webroot

Changing an advanced application template

Moving configuration parts into separate files

Using multiple configurations to simplify the deployment

Implementing and executing cron jobs

Maintenance mode

Deployment tools

Testing

Introduction

Testing application with Codeception

Unit testing with PHPUnit

Unit testing with Atoum

Unit testing with Behat

Debugging, Logging, and Error Handling

Introduction

Using different log routes

Analyzing the Yii error stack trace

Logging and using the context information

Displaying custom errors

Custom panel for debug extension

Index

Customer Reviews

5 star

4 star

3 star

2 star

1 star

Installing the framework

Yii2 is a modern PHP framework provided as a Composer package. In this recipe, we will install the framework via the Composer package manager and configure the database connection for our application.

Getting ready

First of all, install the Composer package manager on your system.

Note

Note: If you use the OpenServer application on Windows, than the composer command already exists in the OpenServer terminal.

In Mac or Linux download the installer from https://getcomposer.org/download/ and install it globally by using the following command:

sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer

In Windows without OpenServer download and run Composer-Setup.exe from the https://getcomposer.org/doc/00-intro.md page.

If you do not have administrative privileges on the system then as an alternative you can just download the https://getcomposer.org/composer.phar raw file and use the php composer.phar call instead of single the composer command.

After installation run in your terminal:

composer

Or (if you just download archive) its alternative:

php composer.phar

When the installation succeeds you will see the following response:

   ______
  / ____/___  ____ ___  ____  ____  ________  _____
 / /   / __ \/ __ '__ \/ __ \/ __ \/ ___/ _ \/ ___/
/ /___/ /_/ / / / / / / /_/ / /_/ (__  )  __/ /
\____/\____/_/ /_/ /_/ .___/\____/____/\___/_/
                    /_/
Composer version 1.2.0 2016-07-18 11:27:19

Right now you can install any package from the https://packagist.org repository.

How to do it…

You can install basic or advanced application templates. In order to learn about the differences between the templates see the Application templates recipe.

Note

Note that during installation the Composer package manager gets a lot of information from the GitHub site. GitHub may limit requests for anonymous users. In this case Composer asks you to input your access token. You should just register the https://github.com site and generate a new token via the https://github.com/blog/1509-personal-api-tokens guide.

Installing a basic project template

Carry out the following steps for installing basic project template:

As the first step open your terminal and install Bower-to-Composer adapter:
```
composer global require "fxp/composer-asset-plugin:^1.2.0"
```
It provides a simple way to load related non-PHP packages (JavaScript and CSS) from the Bower repository.

Create a new application in the new basic directory:

composer create-project --prefer-dist yiisoft/yii2-app-basic basic

Check that your PHP contains the required extensions:
```
cd basic
php requirements.php
```
Note
Note: PHP in command-mode and in web-interface mode can use different php.ini files with different configurations and different extensions.
Create a new database (if it is needle for your project) and configure it in the config/db.php file.
Try to run application via the following console command:
```
php yii serve
```
Check in your browser that the application works by the http://localhost:8080 address:

For permanent working create a new host in your server (Apache, Nginx, and so on) and set the web directory as a document root of the host.

Installing advanced project template

Carry out the following steps for installing advanced project template:

As the first step open your terminal install Bower-to-Composer adapter:
```
composer global require "fxp/composer-asset-plugin:^1.2.0"
```
It provides a simple way to load related non-PHP packages (JavaScript and CSS) from the Bower repository.

Create a new application in the new basic directory:

composer create-project --prefer-dist yiisoft/yii2-app-advanced advanced

The new application does not contains local configuration files and index.php entry scripts yet. To generate the files just init a working environment:
```
cd advanced
php init
```
During initialization select the Development environment.
Check that your PHP contains the required extensions:
```
php requirements.php
```
Note
Note: PHP in command-line mode and in web-interface mode can use different php.ini files with different configuration and different extensions.
Create a new database and configure it in the generated common/config/main-local.php file.
Apply the application migrations:
```
php yii migrate
```
This command will automatically create a user table in your database.
Try to run a frontend application by the following console command:
```
php yii serve --docroot=@frontend/web --port=8080
```
Then run the backend in an other terminal window:
```
php yii serve --docroot=@backend/web --port=8090
```
Check in your browser that the application works via the http://localhost:8080 and http://localhost:8090 addresses:

Create two new hosts for backend and frontend application in your server (Apache, Nginx, and so on) and set the backend/web and frontend/web directories as document roots of the hosts.

How it works…

First of all, we installed the Composer package manager and the Bower asset plugin.

After we installed the application via the composer create-project command, the command creates a new empty directory, clones the source code of application template and loads all its inner dependencies (framework and other components) into the vendor subdirectory.

If needed, we will initialize application configuration and set up a new database.

We can check system requirements via running the requirements.php script in console or browser mode.

And after cloning of the code we can configure our own PHP server to work with the web directories as the server's document roots.

Yii2 Application Development Cookbook - Third Edition

By : Sergey Ivanov, Andrew Bogdanov, Dmitry Eliseev

Yii2 Application Development Cookbook - Third Edition

By: Sergey Ivanov, Andrew Bogdanov, Dmitry Eliseev

Overview of this book

Related Content you might be interested in

Current Title:

Yii2 Application Development Cookbook - Third Edition

Installing the framework

Getting ready

Note

How to do it…

Note

Installing a basic project template

Note

Installing advanced project template

Note

How it works…

See also