title: Django create instance model without form
body: <p>I'm trying to create an instance of "Partita" Model but I don't want to set manually the fields with a form; I need to set the fields (they are two ForeignKey) with a random integer that refers to the id of the Foreign Key.</p>
  
  <p>This is for create a type of creator of football matches where "Partita" (match in italian) is composed by team1 and team2 (in my code "casa" and "trasferta") How can I do it?</p>
  
  <p>I tried this but it throws: Page Not Found, No FantaSquadra matches the given query.</p>
  
  <p><strong>views.py:</strong></p>
  
  <pre><code>def createPartite(request):
      num1=0
      num2=0
      gior=0
  
      while num1==num2:
          num1 = str(random.randint(1,3))
          num2 = str(random.randint(1,3))
          if num1!=num2:
              gior=gior+1
      cas= get_object_or_404(FantaSquadra, pk=num1)
      tra= get_object_or_404(FantaSquadra, pk=num2)
      partita = Partita.creaP(cas,tra)
      partita.save()
      contesto = {
          'partita': partita
      }
  
      return render(request, 'sondaggio/partite.html',contesto)
  </code></pre>
  
  <p><strong>models.py:</strong></p>
  
  <pre><code>class FantaSquadra(models.Model):
      proprietario = models.ForeignKey(User, on_delete=models.CASCADE,unique=True)
      nome_fantasquadra = models.CharField(max_length=200,unique = True)
      punteggio = models.IntegerField(default=0)
      def __str__(self):
          return self.nome_fantasquadra
  
  class Partita(models.Model):
      giornata = models.IntegerField(default=1)
      casa=models.ForeignKey(FantaSquadra,on_delete=models.CASCADE, related_name='fantasquadra_casa', unique=True)
  
      traferta = models.ForeignKey(FantaSquadra, on_delete=models.CASCADE, related_name='fantasquadra_trasferta', unique=True)
      def __str__(self):
          return "giornata "+str(self.giornata)
      def creaP(self,cas,trasfert):
          self.casa = cas
          self.traferta = trasfert
          return self
  </code></pre>