Query on 2 non related models

[Ivan Martić]

Hi guys, hope you can help me. 

I have 2 models and i want to make a count query on them. I need a count on how many articles i have in every category.

Models:

class Vendors(models.Model):

    id = models.AutoField(db_column='id', primary_key=True, blank=False, unique=True)

    name = models.CharField(db_column='name', max_length=150, blank=True, null=True)

    groupid = models.IntegerField(db_column='groupid', blank=True, null=True)

class VendorGroup(models.Model):

    id = models.AutoField(db_column='ID', primary_key=True, null=False, max_length=255, blank=True)

    vendor_group = models.CharField(db_column='Vendor Group', max_length=255, blank=True, null=True)

view:

def vendorsgrouping_view(request):

list_vendor = VendorGroup.objects.all().order_by('vendor_group')

context = {

'lista_vendora':lista_vendora, 

}

return render(request, "templates/vendorgroup.html", context)

I have list of vendors listed in template:

    {% for item in lista_vendora %}

        {{ item.vendor_group }}

    {% endfor %}

Prefetch, annotate, select related dont work since they are not connected. I know it is easier to give foreign key to fields but what about this?

Thanks,

[Rafael E. Ferrero]

Hello Ivan... you say Unrelated but I see you have a relation with VendorGroup... why don't use a ForeignKey?... any way you can use the pipe charater " | " to concatenate two querysets.

https://simpleisbetterthancomplex.com/tips/2016/06/20/django-tip-5-how-to-merge-querysets.html  

Cheers!

Rafael E. Ferrero

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