Django at a glance 初识Django

Because

Django was developed in a fast-paced newsroom environment, it was

designed to make common Web-development tasks fast and easy. Here’s an

informal overview of how to write a database-driven Web app with Django.

因为Django是在一个快节奏的新闻编辑环境下开发完成的，它的设计让通用Web开发任务变得快速而且高效。这里我们可以学习一下如何用Django写一个数据库驱动的Web应用。

The

goal of this document is to give you enough technical specifics to

understand how Django works, but this isn’t intended to be a tutorial or

reference – but we’ve got both! When you’re ready to start a project,

you can start with the tutorial or dive right into more detailed

documentation.

本文档的目标是提供足够多的技术细节让您能够理解Django是如何工作的, 但这不是要做教程或者参考资料 - 但实际上两者的作用都有! 当你准备好开始一个项目的时候, 你可以跟着教程开始学习或者深入更详细文档。

Design your model 设计模型

Although

you can use Django without a database, it comes with an

object-relational mapper in which you describe your database layout in

Python code.

尽管您不用数据库就能使用Django, 它还是提供了一个对象-关系映射器, 让您可以使用Python代码描述您的数据库结构。

data-model syntax offers many rich ways of representing your models –

so far, it’s been solving many years’ worth of database-schema problems.

Here’s a quick example:

数据-模型语法提供了丰富的方式来表述您的模型 - 目前, 它已经解决了多年来的数据库-模式问题。我们来看看例子

Install it 安装

Next, run the Django command-line utility to create the database tables automatically:

下一步, 运行Django命令行工具来自动创建数据库表:

$ python manage.py migrate

migrate command looks at all your available models and creates tables

in your database for whichever tables don’t already exist, as well as

optionally providing much richer schema control.

migrate命令查询所有可用数据模型并在数据库中创建表,只要表格不是数据库中存在的, 以及有选择的提供更丰富的模式控制。

Enjoy the free API 享用免费的API

With

that, you’ve got a free, and rich, Python API to access your data. The

API is created on the fly, no code generation necessary:

这样，您就获得了一个免费、丰富的Python应用编程接口访问您的数据。API是在动态过程中创建的, 因此没有代码生成的必要:

转载自：www.pythonfan.org