title: django modelform css class for select
body: <p>I am trying to add in a class with the name of autocomplete into one of my select.</p>
  
  <pre><code>class MyForm(ModelForm):
      class Meta:
          model = MyModel
          exclude = ['user']
  
      def __init__(self, user, *args, **kwargs):
          super(MyForm, self).__init__(*args, **kwargs)
          self.fields['specie'].queryset = Specie.objects.all(attrs={'class':'autocomplete'})
  </code></pre>
  
  <p>Based on the code above I get <code>all() got an unexpected keyword argument 'attrs'</code></p>