On Mar 7, 5:42 pm, Jamie Pittock <smallb...@gmail.com> wrote:
> Hi,
>
> I have an app with countries and counties. The simplified model is:
>
> class Country(models.Model):
> name = models.CharField(max_length=50)
> slug = models.SlugField()
>
> def __unicode__(self):
> return self.name
>
> class County(models.Model):
> name = models.CharField(max_length=50)
> slug = models.SlugField()
> country = models.ForeignKey(Country)
>
> def __unicode__(self):
> return self.name
>
> The url for a county would be of the format domain.com/country/
> country/.
>
> On the corresponding view for that url I'm currently doing this...
>
> def view_county(request, country_slug, county_slug):
> country = get_object_or_404(Country, slug=country_slug)
> county = get_object_or_404(County, slug=county_slug,
> country=country.id)
>
> 1. First checking to see if a country exists with that slug
> 2. Then checking to see if a county exists with that slug and also
> with the country_id of the country found in step #1
>
> Can that be merged into one step, or is there a better way completely
> of doing it?
It depends - do you actually need the 'country' object in the rest of
your view, or are you simply using it as a way to get the county? If
the latter, you could just do:
county = get_object_or_404(Country, slug=county_slug,
country__slug=country_slug)
Note the double underscore in the country__slug argument.
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