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Python系列视频教程: Django【13讲】第12讲数据展示

2014-02-12 22:07 1106 查看

Python系列视频教程: Django【13讲】第12讲数据展示

继续上一讲

>>> books

[<Book: python book1>, <Book: python book2>]

>>> author1.book_set.all()

[<Book: python book2>]

>>> for a in Author.objects.all():

... for book in a.book_set.all():

... print book

...

...

python book2

python book1

python book1

如何在web中呈现这些数据

blog\views.py

from blog.models import Author,Book

from django.shortcuts import render_to_response

# Create your views here.

def show_author(req):

authors=Author.objects.all()

return render_to_response("show_author.html",{"authors":authors})

urls.py

from django.conf.urls import patterns, include, url

from django.contrib import admin

#from blog.models import Author,Book

admin.autodiscover()

urlpatterns = patterns('',

# Examples:

# url(r'^$', 'csvt06.views.home', name='home'),

url(r'^blog/show_author/$', 'blog.views.show_author'),

url(r'^admin/', include(admin.site.urls)),

)

show_author.html

<body>

<h1>hello</h1>

{%for author in authors %}

<div>

{{forloop.counter}} {{author}}

</div>

{%endfor %}

<div>

共有 {{authors.length}}记录

</div>

</body>

http://127.0.0.1:8000/blog/show_author/

hello

1 Alen
2 Ben
3 Cool
4 Dart
共有记录

修改show_author.html

<body>

<h1>hello author</h1>

{%for author in authors %}

<div>

{{forloop.counter}} {{author}}

{%for book in author.book_set.all %}

<li>{{forloop.counter}} {{book}} </li>

{%endfor %}

</div>

<div>

{%endfor %}

共有 {{authors.length}}记录

</div>

</body>

http://127.0.0.1:8000/blog/show_author/

hello author

1 Alen
1 python book2
2 java book1

2 Ben
1 python book1

3 Cool
1 python book1
2 java book1

4 Dart
共有记录

修改urs.py

url(r'^blog/show_book/$', 'blog.views.show_book'),

修改blog\views.py

def show_book(req):

books=Book.objects.all()

return render_to_response("show_book.html",{"books":books})

blog\templates\show_book.html

<body>

<h1>hello book</h1>

{%for book in books %}

<div>

{{forloop.counter}} {{book}}

{%for author in book.authors.all %}

<li>{{forloop.counter}} {{author}} </li>

{%endfor %}

</div>

<div>

{%endfor %}

共有 {{books.length}}记录

</div>

</body>

http://127.0.0.1:8000/blog/show_book/

hello book

1 python book1
1 Ben
2 Cool

2 python book2
1 Alen

3 java book1
1 Alen

4 java book1
1 Cool

共有记录

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