The Definitive Guide to Django (豆瓣)

副标题: Web Development Done Right
作者: Adrian Holovaty / Jacob Kaplan-Moss
出版社: Apress
出版年: 2007-12-06
页数: 400
定价: CAD 45.14
装帧: Paperback
ISBN: 9781590597255

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内容简介 · · · · · ·

　　Django, the Python-based equivalent to the Ruby on Rails web development framework, is presently one of the hottest topics in web development today. In The Definitive Guide to Django: Web Development Done Right, Adrian Holovaty, one of Django's creators, and Django lead developer Jacob Kaplan-Moss show you how they use this framework to create award-winning web sites. Over the ... (展开全部) 　　

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读书笔记 · · · · · · (共6篇)
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按有用程度 按页码先后 最新笔记

Chapter 3: Views and URLconfs

irachex (去冬天的空岛)
Chapter 3: Views and URLconfs 自己用ASP.NET MVC 2已经很熟练了，所以有关MVC的内容和设计理念都很了解，主要是对语法点的摘抄感觉作者的命名有些奇怪，不知道是django有某种约定俗成还是怎么。按我的理解，书中的'views'指MVC中的Controller，书中的'templates'指MVC中的View，为了符合自己的习惯，我把这章称为Controllers and URLconfs。不知道之后的章节会不会推翻我的习惯 [update:看到Chapter 5，django这种叫MTV框.. (更多)
Chapter 3: Views and URLconfs
自己用ASP.NET MVC 2已经很熟练了，所以有关MVC的内容和设计理念都很了解，主要是对语法点的摘抄
感觉作者的命名有些奇怪，不知道是django有某种约定俗成还是怎么。按我的理解，书中的'views'指MVC中的Controller，书中的'templates'指MVC中的View，为了符合自己的习惯，我把这章称为Controllers and URLconfs。不知道之后的章节会不会推翻我的习惯
[update:看到Chapter 5，django这种叫MTV框架，Model，Template，View]
每个Controller函数至少要有一个参数，通常被叫作request。这是一个触发这个Controller、包含当前Web请求信息的对象，是类django.http.HttpRequest的一个实例。它必须是这个Controller的第一个参数。
```
from django.http import HttpResponse

def hello(request):
    return HttpResponse("Hello world")
```
settings.py包含一个ROOT_URLCONF配置用来指向自动产生的urls.py，用来配置URL。
```
from django.conf.urls.defaults import *
from mysite.views import hello, current_datetime, hours_ahead

urlpatterns = patterns('',
    (r'^$', home),
    (r'^hello/', hello),
    (r'^time/plus/(\d{1,2})/, hours_ahead),
)
```
(收起)
2011-03-10 19:58:23 1人收藏回应

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推荐
CH2

Ryan  (有月正当午，堪与梨花白。)

** The Django Book *** CH2 > django-admin.py startproject mysite __init__.py: A file required for perthon to treat mysite directory as a package. manage.py: A command-line unity that lets you interact with Django project in various ways. settings.py Settings/configuration for Django project. Urls.py: The urls fot the Django project **** Running the Dev Server > python man... (更多)

** The Django Book
*** CH2
> django-admin.py startproject mysite
__init__.py: A file required for perthon to treat mysite directory as a package.
manage.py: A command-line unity that lets you interact with Django project in various ways.
settings.py Settings/configuration for Django project.
Urls.py: The urls fot the Django project
**** Running the Dev Server
> python manage.py runserver
The server was on http://127.0.0.1:8000/
Change the Dev Server's Host or port:
>python manage.py runserver 0.0.0.0:8000
It will alow people visit your site with your IP address
*** CH3 Views and URLcontrol
TO see the sys.path
>>> import sys
>>> print sys.path
**** ragular expression
^ caret: require that the pattern marthes the start of the string
$ dollar: require that the pattern matches the end of string
The root: ('^$', my_homepage_view),
Sample:
^hello/ will match /hello/foo and /hello/bar
hello/$ will match /fool/bar/hello/ and foolhello/
*allow request without a trailing slash*
To set APPEND_SLASH True
else APPEND_SLASH False
# Regexes
.(dot) : any single character
\d : any single digit
[A-Z] : any character between A and Z
[a-z] : any character between a and z
[A-Za-z]: case-insenstive
+ : one or more of prev expression
[^/]+ : one or more charcters untill (and not include) a forward slash
? : zero or one of the prev expression(e.g \d? matches zero or one digits
*- : zero or more
{1,3} : between one and tree or prevexpression (e.g \d{1,3} match one ,two or threee digits)
*** Dynamic Content
(r'^time/plus/(\{1,2})/$', hours_ahead),
r is means a "raw string" -- its contents should not interpret backslashes.
/in normal Python strings, blackslashes are uesd for escaping special characters -such as in the string \n ./
def hours_head(respond,num):
... (收起)

2011-10-05 00:35:55 回应

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第43页

适兕 (我开始鄙视我自己！)

When you create a Template object, the template system compiles the raw template code into an internal, optimized form, ready for rendering. 网站的Template，这是和程序分离的必要组件。 A Python dictionary is a mapping between known keys and variable values. A Context is similar to a diction- ary, but a Context provides additional functionality, Key, Value.多么永恒的组合。 Django... (更多)

When you create a Template object, the template system compiles the raw template code
into an internal, optimized form, ready for rendering.
网站的Template，这是和程序分离的必要组件。
A Python dictionary is a mapping between known keys and variable values. A Context is similar to a diction-
ary, but a Context provides additional functionality,
Key, Value.多么永恒的组合。
Django’s template parsing is quite fast. Behind the scenes, most of the parsing hap-
pens via a call to a single regular expression. This is in stark contrast to XML-based template
engines, which incur the overhead of an XML parser and tend to be orders of magnitude
slower than Django’s template-rendering engine.
我非常喜欢Behind the scenes. (收起)

2011-03-17 17:46:03 回应

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第28页

适兕 (我开始鄙视我自己！)

关于页面URL与view的简单描述： just write view functions and map them to URLs via URLconfs. the principle of loose coupling。这句话的意思是：松散都耦合原理。 URLconfs and views are loose coupling in action. one of Django’s core philosophies is that URLs should be beautiful. it’s strongly suggested that you use raw strings any time you’re defining a regu- lar expression in Python.... (更多)

关于页面URL与view的简单描述：
just write view functions and map them to URLs via URLconfs.
the principle of loose coupling。
这句话的意思是：松散都耦合原理。
URLconfs and views are loose coupling in action.
one of Django’s core philosophies is that URLs should be beautiful.
it’s strongly suggested that you use raw strings any time you’re defining a regu-
lar expression in Python.
程序员都是这么较真的吗？
In this example, the URLpattern was written first and the view was written second, but in the previous exam-
ples, the view was written first and then the URLpattern was written. Which technique is better? Well, every
developer is different.
If you’re a big-picture type of person, it might make the most sense to you to write all the URLpatterns
for your application at the same time, at the start of your project, and then code up the views. This has the
advantage of giving you a clear to-do list, and it essentially defines the parameter requirements for the view
functions you’ll need to write.
If you’re more of a bottom-up developer, you might prefer to write the views first and then anchor them
to URLs afterward. That’s OK, too.
In the end, it comes down to which technique fits your brain the best. Both approaches are valid.
不过我还是希望自己是那个有Big-picture的家伙。
each view always takes an HttpRequest object as its first parameter.
这是入口，没有此一切都是浮云。
URLpatterns使用的那个r的意思是 re, 就是我们常用的那个 import re.
urls.py中的每条正则表达式都需要用逗号隔开，如果你没有，那你就得去调试一番。
(收起)

2011-03-17 15:33:07 回应

收藏
推荐
第43页

适兕 (我开始鄙视我自己！)

When you create a Template object, the template system compiles the raw template code into an internal, optimized form, ready for rendering. 网站的Template，这是和程序分离的必要组件。 A Python dictionary is a mapping between known keys and variable values. A Context is similar to a diction- ary, but a Context provides additional functionality, Key, Value.多么永恒的组合。 Django... (更多)

When you create a Template object, the template system compiles the raw template code
into an internal, optimized form, ready for rendering.
网站的Template，这是和程序分离的必要组件。
A Python dictionary is a mapping between known keys and variable values. A Context is similar to a diction-
ary, but a Context provides additional functionality,
Key, Value.多么永恒的组合。
Django’s template parsing is quite fast. Behind the scenes, most of the parsing hap-
pens via a call to a single regular expression. This is in stark contrast to XML-based template
engines, which incur the overhead of an XML parser and tend to be orders of magnitude
slower than Django’s template-rendering engine.
我非常喜欢Behind the scenes. (收起)

2011-03-17 17:46:03 回应

收藏
推荐
CH2

Ryan  (有月正当午，堪与梨花白。)

** The Django Book *** CH2 > django-admin.py startproject mysite __init__.py: A file required for perthon to treat mysite directory as a package. manage.py: A command-line unity that lets you interact with Django project in various ways. settings.py Settings/configuration for Django project. Urls.py: The urls fot the Django project **** Running the Dev Server > python man... (更多)

** The Django Book
*** CH2
> django-admin.py startproject mysite
__init__.py: A file required for perthon to treat mysite directory as a package.
manage.py: A command-line unity that lets you interact with Django project in various ways.
settings.py Settings/configuration for Django project.
Urls.py: The urls fot the Django project
**** Running the Dev Server
> python manage.py runserver
The server was on http://127.0.0.1:8000/
Change the Dev Server's Host or port:
>python manage.py runserver 0.0.0.0:8000
It will alow people visit your site with your IP address
*** CH3 Views and URLcontrol
TO see the sys.path
>>> import sys
>>> print sys.path
**** ragular expression
^ caret: require that the pattern marthes the start of the string
$ dollar: require that the pattern matches the end of string
The root: ('^$', my_homepage_view),
Sample:
^hello/ will match /hello/foo and /hello/bar
hello/$ will match /fool/bar/hello/ and foolhello/
*allow request without a trailing slash*
To set APPEND_SLASH True
else APPEND_SLASH False
# Regexes
.(dot) : any single character
\d : any single digit
[A-Z] : any character between A and Z
[a-z] : any character between a and z
[A-Za-z]: case-insenstive
+ : one or more of prev expression
[^/]+ : one or more charcters untill (and not include) a forward slash
? : zero or one of the prev expression(e.g \d? matches zero or one digits
*- : zero or more
{1,3} : between one and tree or prevexpression (e.g \d{1,3} match one ,two or threee digits)
*** Dynamic Content
(r'^time/plus/(\{1,2})/$', hours_ahead),
r is means a "raw string" -- its contents should not interpret backslashes.
/in normal Python strings, blackslashes are uesd for escaping special characters -such as in the string \n ./
def hours_head(respond,num):
... (收起)

2011-10-05 00:35:55 回应

收藏
推荐

CH2

Ryan  (有月正当午，堪与梨花白。)

** The Django Book *** CH2 > django-admin.py startproject mysite __init__.py: A file required for perthon to treat mysite directory as a package. manage.py: A command-line unity that lets you interact with Django project in various ways. settings.py Settings/configuration for Django project. Urls.py: The urls fot the Django project **** Running the Dev Server > python man... (更多)

** The Django Book
*** CH2
> django-admin.py startproject mysite
__init__.py: A file required for perthon to treat mysite directory as a package.
manage.py: A command-line unity that lets you interact with Django project in various ways.
settings.py Settings/configuration for Django project.
Urls.py: The urls fot the Django project
**** Running the Dev Server
> python manage.py runserver
The server was on http://127.0.0.1:8000/
Change the Dev Server's Host or port:
>python manage.py runserver 0.0.0.0:8000
It will alow people visit your site with your IP address
*** CH3 Views and URLcontrol
TO see the sys.path
>>> import sys
>>> print sys.path
**** ragular expression
^ caret: require that the pattern marthes the start of the string
$ dollar: require that the pattern matches the end of string
The root: ('^$', my_homepage_view),
Sample:
^hello/ will match /hello/foo and /hello/bar
hello/$ will match /fool/bar/hello/ and foolhello/
*allow request without a trailing slash*
To set APPEND_SLASH True
else APPEND_SLASH False
# Regexes
.(dot) : any single character
\d : any single digit
[A-Z] : any character between A and Z
[a-z] : any character between a and z
[A-Za-z]: case-insenstive
+ : one or more of prev expression
[^/]+ : one or more charcters untill (and not include) a forward slash
? : zero or one of the prev expression(e.g \d? matches zero or one digits
*- : zero or more
{1,3} : between one and tree or prevexpression (e.g \d{1,3} match one ,two or threee digits)
*** Dynamic Content
(r'^time/plus/(\{1,2})/$', hours_ahead),
r is means a "raw string" -- its contents should not interpret backslashes.
/in normal Python strings, blackslashes are uesd for escaping special characters -such as in the string \n ./
def hours_head(respond,num):
... (收起)

2011-10-05 00:35:55 回应

收藏
推荐
第43页

适兕 (我开始鄙视我自己！)

When you create a Template object, the template system compiles the raw template code into an internal, optimized form, ready for rendering. 网站的Template，这是和程序分离的必要组件。 A Python dictionary is a mapping between known keys and variable values. A Context is similar to a diction- ary, but a Context provides additional functionality, Key, Value.多么永恒的组合。 Django... (更多)

When you create a Template object, the template system compiles the raw template code
into an internal, optimized form, ready for rendering.
网站的Template，这是和程序分离的必要组件。
A Python dictionary is a mapping between known keys and variable values. A Context is similar to a diction-
ary, but a Context provides additional functionality,
Key, Value.多么永恒的组合。
Django’s template parsing is quite fast. Behind the scenes, most of the parsing hap-
pens via a call to a single regular expression. This is in stark contrast to XML-based template
engines, which incur the overhead of an XML parser and tend to be orders of magnitude
slower than Django’s template-rendering engine.
我非常喜欢Behind the scenes. (收起)

2011-03-17 17:46:03 回应

收藏
推荐
第28页

适兕 (我开始鄙视我自己！)

关于页面URL与view的简单描述： just write view functions and map them to URLs via URLconfs. the principle of loose coupling。这句话的意思是：松散都耦合原理。 URLconfs and views are loose coupling in action. one of Django’s core philosophies is that URLs should be beautiful. it’s strongly suggested that you use raw strings any time you’re defining a regu- lar expression in Python.... (更多)

关于页面URL与view的简单描述：
just write view functions and map them to URLs via URLconfs.
the principle of loose coupling。
这句话的意思是：松散都耦合原理。
URLconfs and views are loose coupling in action.
one of Django’s core philosophies is that URLs should be beautiful.
it’s strongly suggested that you use raw strings any time you’re defining a regu-
lar expression in Python.
程序员都是这么较真的吗？
In this example, the URLpattern was written first and the view was written second, but in the previous exam-
ples, the view was written first and then the URLpattern was written. Which technique is better? Well, every
developer is different.
If you’re a big-picture type of person, it might make the most sense to you to write all the URLpatterns
for your application at the same time, at the start of your project, and then code up the views. This has the
advantage of giving you a clear to-do list, and it essentially defines the parameter requirements for the view
functions you’ll need to write.
If you’re more of a bottom-up developer, you might prefer to write the views first and then anchor them
to URLs afterward. That’s OK, too.
In the end, it comes down to which technique fits your brain the best. Both approaches are valid.
不过我还是希望自己是那个有Big-picture的家伙。
each view always takes an HttpRequest object as its first parameter.
这是入口，没有此一切都是浮云。
URLpatterns使用的那个r的意思是 re, 就是我们常用的那个 import re.
urls.py中的每条正则表达式都需要用逗号隔开，如果你没有，那你就得去调试一番。
(收起)

2011-03-17 15:33:07 回应

收藏
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> 更多读书笔记（共6篇）

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"The Definitive Guide to Django"的论坛 · · · · · ·


想看翻译版本请这里	来自fer		2009-11-22
又是本Bible	来自比你笨		2008-02-05
常看常新	来自myhat123		2008-02-02
英文的吗	来自假面若克	3 回应	2008-01-24