Symfony 2.0全栈开发指南：完整的实战手册

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"Symfony Metabook 2.0 是一本全面介绍Symfony 2.0 PHP开发框架的权威指南，发布日期为2012年10月26日。这本书遵循Creative Commons Attribution-ShareAlike 3.0 Unported许可证，允许读者自由地分享、复制、分发和修改作品，但必须遵守特定的署名和共享条款。重要的是，所有内容的提供基于“原样”原则，不提供任何形式的保证，尽管作者和SensioLab在准备过程中已尽最大谨慎。这意味着读者在使用本书中的信息时，可能面临直接或间接损失的风险，作者和SensioLab对此不负责任。如果发现错误或问题，这本书鼓励读者进行报告，以便不断更新和完善内容。作为一本全面的教材，Symfony Metabook 2.0详细讲解了Symfony框架的各个方面，包括但不限于其设计理念、组件结构、安装配置、路由系统、模板引擎、安全特性、数据库操作以及面向服务的架构。它旨在帮助开发者深入了解Symfony框架，无论是初次接触还是希望进一步提升技术栈的开发者都能从中获益。由于Symfony 2.0是早期版本，书中可能会涉及当时的最佳实践和技术细节，但随着PHP和框架的发展，部分概念和技术可能已经有所变化。然而，对于了解早期Symfony框架的核心概念和实践，这本书仍然具有很高的参考价值。对于现代开发者来说，这本Metabook可能作为历史背景的学习资料，或者作为理解现代框架演进的基础。 Symfony Metabook 2.0是一本不可或缺的资源，对于深入理解Symfony框架及其在2.0时代的重要地位至关重要。阅读它将有助于开发者提升PHP开发技能，适应并掌握一个高效且灵活的Web开发框架。"

Listing 1-13

If you take a closer look at the controller code, you can see that instead of rendering a template

and returning a Response object like before, it just returns an array of parameters. The @Template()

annotation tells Symfony to render the template for you, passing in each variable of the array to

the template. The name of the template that's rendered follows the name of the controller. So, in

this example, the AcmeDemoBundle:Demo:hello.html.twig template is rendered (located at src/Acme/

DemoBundle/Resources/views/Demo/hello.html.twig).

The @Route() and @Template() annotations are more powerful than the simple examples shown

in this tutorial. Learn more about "annotations in controllers" in the official documentation.

Templates

The controller renders the src/Acme/DemoBundle/Resources/views/Demo/hello.html.twig template

(or AcmeDemoBundle:Demo:hello.html.twig if you use the logical name):

{# src/Acme/DemoBundle/Resources/views/Demo/hello.html.twig #}

{% extends "AcmeDemoBundle::layout.html.twig" %}

{% block title "Hello " ~ name %}

{% block content %}

<h1>Hello {{ name }}!</h1>

{% endblock %}

By default, Symfony2 uses Twig

as its template engine but you can also use traditional PHP templates if

you choose. The next chapter will introduce how templates work in Symfony2.

Bundles

You might have wondered why the bundle word is used in many names we have seen so far. All the code

you write for your application is organized in bundles. In Symfony2 speak, a bundle is a structured set

of files (PHP files, stylesheets, JavaScripts, images, ...) that implements a single feature (a blog, a forum,

...) and which can be easily shared with other developers. As of now, we have manipulated one bundle,

AcmeDemoBundle. You will learn more about bundles in the last chapter of this tutorial.

Working with Environments

Now that you have a better understanding of how Symfony2 works, take a closer look at the bottom of

any Symfony2 rendered page. You should notice a small bar with the Symfony2 logo. This is called the

"Web Debug Toolbar" and it is the developer's best friend.

9. http://twig.sensiolabs.org/

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Symfony 2.0全栈开发指南：完整的实战手册

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