Yii2英文教程：快速构建Web应用

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"Yii2 教程：Web Application Development with Yii 2 and PHP 的英文版教程是一本专门针对快速提升Web应用程序开发技能的指南。该教程由 Mark Safronov 和 Jeffrey Winesett 联合编写，旨在帮助开发者利用新一代的 Yii 2 PHP 框架进行高效开发。Yii2 是一个功能强大的现代Web框架，它基于PHP语言构建，注重性能、安全性和可维护性。此教程涵盖了Yii2框架的基础知识，包括但不限于 MVC（Model-View-Controller）架构、路由、数据库操作、身份验证与授权、表单处理、RESTful API设计以及前端开发的最佳实践。通过学习，读者将能够理解如何利用Yii2的特性来构建高效、模块化的应用，并遵循现代Web开发的最佳实践。在阅读过程中，读者需要确保遵守版权要求，除非获得出版商Packt Publishing的书面许可，否则不得复制、存储或以任何形式传播书中的内容。尽管作者和出版社已尽力确保信息的准确性，但书中的内容并不保证无误，且不承担因本书直接或间接造成的损失。此外，Packt Publishing 在书中提到的所有公司和产品商标信息，都尽可能地进行了正确标注，但并不能保证其准确性。这是一本为想要深入理解和掌握Yii2框架的开发者量身打造的实用教材，无论是初学者还是经验丰富的开发人员，都能从中受益匪浅。通过跟随教程，读者将能够构建出高质量的Web应用，提升自己的技术实力和项目开发效率。"

Preface

This book is a guide that describes the process of incremental, test-rst development

of a web application using Yii framework Version 2.

The Yii framework, hosted at

http://www.yiiframework.com/, is a PHP-based

application framework built around the Model-View-Controller composite pattern.

It is suitable for building both web and console applications, but its feature set makes

it most useful for web applications. It has several code generation facilities, including

the full create-read-update-delete (CRUD) interface maker. It relies heavily on the

conventions expressed in its default conguration settings.

Overall, if all you need is a fancy interface for the underlying database, there

is probably nothing better for you than the Yii framework. Given the extensive

conguration options, any kind of application can be made from Yii.

Version 2 of the Yii framework is built utilizing the latest improvements in the PHP

infrastructure collected over the years. It uses the Composer utility (see

https://

getcomposer.org/

) as a primary distribution method, PSR levels 1, 2, and 4 from

the PHP Framework Interop Group guidelines (see http://www.php-fig.org/),

and PHP 5.4+ features, such as short array syntax and closures.

At the time of writing, Yii 2 is at the stage of late beta. Some changes are expected,

but there should not be backward-compatibility-breaking changes anymore. Thus,

the content of this book can be reasonably trusted even if the framework can attain

some additional features after this book is published.

What this book covers

Chapter 1, Getting Started, covers the simplest possible methods to raise a working

web application completely from scratch using the Yii framework.

Preface

[ 2 ]

Chapter 2, Making a Custom Application with Yii 2, shows how the process of

implementation of a web application with a single, working, tested feature can

be done from scratch using the Yii framework.

Chapter 3, Automatically Generating the CRUD Code, shows how we can implement

a working, tested feature in an existing web application using only the code

generation facilities and not a line of custom code written.

Chapter 4, The Renderer, describes the details of how the framework renders its output

and presents some tricks to introduce customizations to the rendering process.

Chapter 5, User Authentication, discusses the tools to provide authentication to

application visitors.

Chapter 6, User Authorization and Access Control, explains the ways to control access

for application visitors, and, especially, about the role-based access control system.

Chapter 7, Modules, returns from the exact features of the framework to its

fundamentals. Here we will clearly understand the internal structure and logic

of the Yii-based application and how it inuences the overall design.

Chapter 8, Overall Behavior, is about the infrastructure of the Yii-based application.

We will learn about several features that affect the application as a whole.

Chapter 9, Making an Extension, tells us how to make the extension to the Yii 2

framework and prepare it so that it is installable in the same way as the extensions

built-in to the basic distribution of the framework itself.

Chapter 10, Events and Behaviors, investigates the intricacies of the system inside

the Yii 2 framework allowing us to attach custom behavior to many of the usual

activities of the application, such as fetching a record from the database or rendering

a view le.

Chapter 11, The Grid, has two purposes. First, it explains the powerful and complex

GridView widget, which allows you to make complicated, table-based interfaces

relatively easily. Second, it presents a different approach in developing applications

using the Yii 2 framework, the one that is customary in its community, so you can

see both the advantages and the disadvantages of both approaches.

Chapter 12, Route Management, explains the top level of the framework, that is, how it

responds to HTTP requests from actual visitors.

Chapter 13, Collaborative Work, concludes the book by presenting the methods that

help to manage the code base of a Yii-based application when there are several

developers working on it.

Preface

[ 3 ]

Appendix A, Deployment Setup with Vagrant, shows a simple way to construct a virtual

machine for your local development, which you can use for building the examples

from this book.

Appendix B, The Active Form Primer, contains an extension to Chapter 11, The Grid, in

which we use another powerful user interface widget of Yii 2, the ActiveForm. It

was excluded from the chapter text because it's not directly related to the GridView

widget, but we could not gloss over it completely. Without the ActiveForm, the

feature we were building in Chapter 11, The Grid, is not complete.

Through the course of the book, starting from Chapter 2, Making a Custom Application

with Yii 2, we'll be working with a single code base. Later chapters will build over

the work previously done, so the book is expected to be read sequentially, without

skipping or changing order.

Who this book is for

The text is targeted at existing, established developers who want to learn quickly

whether the Yii framework can t their demands and, especially, workow. It is not

a reference, but rather a guide. More than that, the reader is expected to have a copy

of the source code and an ofcial documentation as supplementary material

while reading.

We will expect some relatively high qualications from the reader, as several basic

development concepts such as POSIX-compatible command line, version control

system, deployment pipeline, automated testing harness, and an ability to navigate

through the code base by fully qualied names of classes are assumed as obvious

and not requiring any explanation.

What you need for this book

A workstation with the full LAMP stack installed, that is, having Apache web

server, MySQL relational database management system, and PHP runtime installed

over some Linux-based distribution. If the reader is capable enough, then any of

these requirements can be swapped for different vendors, except PHP, which is

quite obvious.

You have to use PHP Version 5.4 and higher, because it's a requirement for Yii 2,

and generally, you don't have any reason to use previous versions anymore.

Even if you don't use a POSIX-compatible OS, such as any Linux-based distribution

or Mac OS X, you should have a Bash-like shell, as all command-line examples in

this book assume the availability of this shell.

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