Django models avoid duplicates

Question

In models:

class Getdata(models.Model):
    title = models.CharField(max_length=255)
    state = models.CharField(max_length=2, choices=STATE, default=\"0\")         


        

Answer 1

The unique_together also suggested is the best way, but if that's not appropriate for your needs, you can handle it in your form's clean method. eg

def clean(self):
   try:
      Getdata.objects.get(title=self.cleaned_data['title'], 
                          state=self.cleaned_data['state'],
                          name=self.cleaned_data['name'],
                          created_by=self.cleaned_data['created_by'] )
      #if we get this far, we have an exact match for this form's data
      raise forms.ValidationError("Exists already!")
   except Getdata.DoesNotExist:
      #because we didn't get a match
      pass

   return self.cleaned_data