I am learning Django and my first program is a drill-down type page
similar to what I see at http://chicagocrime.org. I am using generic
views and have run into confusion about how to handle a URL like this:
http://www.chicagocrime.org/types/armed_violence/245/
I have two models, programs and counties, where each county can contain
any number of programs. My urls.py and models.py are included at the end.
What I can't figure out is exactly how to handle this when a drill-down
is more than one level deep. My attempt below with the URL
/program/county/12345/ produces the following error messages:
Exception Type: TypeError
Exception Value: object_list() got multiple values for keyword
argument 'queryset'
which I can tell is because the URL parameter is getting passed to
object_list(). So my question is, how do I take advantage of a URL
parameter and suppress it getting passed to object_list()?
What would be a better way to handle this and still take advantage of
generic views? My program will probably end up allowing drilling-down
multiple levels deep and ideally with a lot of cross relations.
Thanks!
Tim
== urls.py ==
*from django.conf.urls.defaults import **
from drill.models import county, program
program_info_dict = {
'queryset': program.objects.order_by('programname'),
}
urlpatterns = patterns('',
(r'^county/$', 'django.views.generic.list_detail.object_list',
dict(queryset=county.objects.all(), paginate_by=40)),
(r'^county/(?P<object_id>\d+)/$',
'django.views.generic.list_detail.object_detail',
dict(queryset=county.objects.all())),
(r'^program/$', 'django.views.generic.list_detail.object_list',
dict(program_info_dict, paginate_by=40)),
(r'^program/(?P<object_id>\d+)/$',
'django.views.generic.list_detail.object_detail', program_info_dict),
(r'^program/county/(?P<object_id>\d+)/$',
'django.views.generic.list_detail.object_list',
dict(queryset=program.objects.filter(fips='object_id'), paginate_by=40)),
)
== models.py ==
from django.db import models
class county(models.Model):
fips = models.IntegerField(blank=False)
countyname = models.CharField(maxlength=210)
class Meta:
ordering = ('countyname',)
def __str__(self):
return self.countyname
class program(models.Model):
programname = models.CharField(blank=True, maxlength=219)
fips = models.ForeignKey(county)
)
def __str__(self):
return self.programname
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