Reversing URL Patterns

In [1]:

    

from django.core.urlresolvers import reverse


    

In [2]:

    

reverse('organizer_tag_list')


    

    
Out[2]:





'/tag/'

In [3]:

    

reverse(
    'organizer_tag_detail',
    args=['tag_slug_string'])


    

    
Out[3]:





'/tag/tag_slug_string/'

In [4]:

    

reverse(
    'organizer_tag_detail',
    kwargs={'slug': 'tag_slug_string'})


    

    
Out[4]:





'/tag/tag_slug_string/'

In [5]:

    

from django.template import Template, Context


    

In [6]:

    

code = "{% url 'organizer_tag_list' %}"
template = Template(code)
template.render(Context())


    

    
Out[6]:





'/tag/'

In [7]:

    

code = "{% url 'organizer_tag_detail' 'tag_slug_string' %}"
template = Template(code)
template.render(Context())


    

    
Out[7]:





'/tag/tag_slug_string/'

In [8]:

    

code = "{% url 'organizer_tag_detail' slug='tag_slug_string' %}"
template = Template(code)
template.render(Context())


    

    
Out[8]:





'/tag/tag_slug_string/'

In [9]:

    

from django.core.urlresolvers import reverse
from organizer.models import Tag


    

In [10]:

    

django_tag = Tag.objects.get(slug__iexact='django')
reverse(
    'organizer_tag_detail',
    kwargs={'slug': django_tag.slug})


    

    
Out[10]:





'/tag/django/'

In [11]:

    

template_code = (
    "{% url 'organizer_tag_detail' tag.slug %}")
django_tag = Tag.objects.get(slug__iexact='django')
context = Context({'tag': django_tag})
template = Template(code)
template.render(context)


    

    
Out[11]:





'/tag/tag_slug_string/'

In [12]:

    

django_tag = Tag.objects.get(slug__iexact='django')
django_tag.get_absolute_url()


    

    
Out[12]:





'/tag/django/'

In [13]:

    

django_tag = Tag.objects.get(slug__iexact='django')
context = Context({'tag': django_tag})
code = "{{ tag.get_absolute_url }}"
template = Template(code)
template.render(context)


    

    
Out[13]:





'/tag/django/'

In [14]:

    

from pprint import pprint
from django.core.urlresolvers import (
    NoReverseMatch, reverse)


    

In [15]:

    

try:
    reverse('no_url_pattern_with_this_name')
except NoReverseMatch as e:
    pprint(str(e), width=50)


    

    




("Reverse for 'no_url_pattern_with_this_name' "
 "with arguments '()' and keyword arguments "
 "'{}' not found. 0 pattern(s) tried: []")

In [16]:

    

# this needs a tag.slug values passed to args or kwargs!
try:
    reverse('organizer_tag_detail')
except NoReverseMatch as e:
    pprint(str(e), width=50)


    

    




("Reverse for 'organizer_tag_detail' with "
 "arguments '()' and keyword arguments '{}' "
 'not found. 1 pattern(s) tried: '
 "['tag/(?P<slug>[\\\\w\\\\-]+)/$']")