x-N0/README.md

## README.md

      
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    Common Regular Expressions for Django URLs

A list of comman regular expressions for use in django url's regex.
Example Django URLs patterns:
urlpatterns = patterns('',
    # Examples:
    url(r'^$', 'appname.views.home', name='home'),
    url(r'^contact/$', 'appname.views.contact', name='contact'),
    url(r'^about/$', 'appname.views.home', name='about'),
    url(r'^profile/(?P<username>[\w.@+-]+)/$', 'appname.views.home', name='about'),
    # url(r'^blog/', include('blog.urls')),

    url(r'^admin/', include(admin.site.urls)),
)
Username (user's username)

Regex:
(?P<username>[\w.@+-]+)

Example:

Parameters:
username = 'email@email.com' 
or 
username = 'myusername' ## this paramater can be either email or username fields
Query:
object = UserModel.objects.get(username=username)
Url:
url(?P<username>[\w.@+-]+)$', 'appname.views.show_user'),

View:
def show_user(request, username):
    ...
    return ...
Live usage:
yourdomain.com/email@email.com/

or

yourdomain.com/myusername/


Object ID (user id, profile id, group id, etc)

Regex:
(?P<order>\d+)

Example

Parameters:
id = 1
Query:
object = Model.objects.get(id=id)
Url:
url(r'^(?P<id>\d+)$', 'appname.views.item_id'),

View:
def item_id(request,id):
    ...
    return ...
Live usage:
yourdomain.com/12/

Username with Object Order

Regex:
(?P<username>[\w.@+-]+)/(?P<order>\d+)

Example

Parameters:
username = "myusername"

order = 13
Query:
user_object = UserModel.objects.get(username=username)
queryset = UserItem.objects.filter(order=order, user=user)
Url:
url(r'^(?P<username>[\w.@+-]+)/(?P<order>\d+)/$', 'appname.views.item_home', name='home'),

View:
def item_home(request, username, order):
    ...
    return ...
Live usage:
yourdomain.com/useritem/myusername/13/

Slugs

Regex:
(?P<slug>[\w-]+)

Example

Parameters:
slug = "slugged-item"
Query:
object = Articles.objects.get(slug=slug)
Url:
url(r'^(?P<slug>[\w-]+)/$', 'appname.views.article'),

View:
def article(request,article):
    ...
    return ...
Live usage:
yourdomain.com/your-slug/

Digits and Dates (through digits)

Regex:
4 Digits like 2015
(?P<year>\d{4})

2 Digits like 12
(?P<month>\d{2})

Any Digits like 1231 or 123438192
(?P<article_id>\d+)

Example

Parameters:
year = 2015
month = 01
article_id = 412
Query:
year_queryset = Articles.objects.filter(year=year)
months_in_year_queryset = Articles.objects.filter(year=year).filter(month=month)
article_object = Articles.objects.get(id=article_id)
Url:
(r'^articles/(?P<year>\d{4})/$', views.year_archive),
(r'^articles/(\d{4})/(?P<month>\d{2})/$', views.month_archive),
(r'^articles/(?P<year>\d{4})/(?P<month>\d{2})/(?P<article_id>\d+)/$', views.article_detail),

View:
def year_archive(request, year):
    return ..

def month_archive(request, month):
    return ..

def article_detail(request, year, month, article_id):
    ...
    return ...
Live usage:
yourdomain.com/2015/
yourdomain.com/2015/03/
yourdomain.com/2015/03/21/

If you find other regular expressions you are unsure of their meaning, feel free to contact us.
Thank you!
Coding for Entrepreneurs