Re: Ho to "create" a field in a queryset to show in my template?

Adding it as a regular property to your Categories class should work:

    # inside Categoria

    @property

    def total(self):

        return Plano.object.filter(categoria=self).count()

You may also want to use backward relationship links to simplify the

code and make it more robust, but I don't know how your models are

setup. If it's just an FK without an explicit related_name, should be 

something along the lines of:

    @property

    def total(self):

        return self.plano_set.count()

On 2015-03-23, at 17:47 , Fellipe Henrique <fellipeh@gmail.com> wrote:

Hello,

I have these view:

def planos_view(request, cat_id=0):
    if cat_id == '0':
        categorias = Categoria.objects.filter(publicado=True)
    else:
        categorias = Categoria.objects.filter(publicado=True).filter(id=cat_id)

    for c in categorias:
        c.total = Plano.objects.filter(categoria=c).count()

    return render_to_response('planos.html', locals(),
                              context_instance=RequestContext(request))

I want to add the "total" field in my "categories" model.. What's the best approach for these, because these code above don't work...

Thanks agains 

T.·.F.·.A.·.     S+F

Fellipe Henrique P. Soares

e-mail: > echo "lkrrovknFmsgor4ius" | perl -pe \ 's/(.)/chr(ord($1)-2*3)/ge'

Blog: http://fhbash.wordpress.com/

GitHub: https://github.com/fellipeh

Twitter: @fh_bash

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