hidden id

hidden_id.py

#from models.py
class DataLayer(Named, Authored, Dated, Noted):
    geometry_type = models.CharField(max_length=50, null=True, blank=True)
    srs = models.CharField(max_length=50, null=True, blank=True)
    files = models.ManyToManyField('DataFile', null=True, blank=True )
    layer_id = models.AutoField(primary_key=True)
    def __unicode__(self):
        return "DataLayer: %s" % self.name

#from forms.py
class LayerReviewForm(forms.ModelForm):
    """For editing and configuring the layer information for each layer."""
    class Meta:
        model = DataLayer
       	
       	fields = ['name', 'notes', 'geometry_type', 'srs','layer_id']
       	exclude = ["layer_id"]
       	
        '''def __init__(self, *args, **kwargs): 
    	from django.forms.widgets import HiddenInput
       	hide_condition = kwargs.pop('hide_condition',None)
       	super(LayerReviewForm, self).__init__(*args, **kwargs)
       	if hide_condition:
       		self.fields['layer_id'].widget = HiddenInput()'''

#from views.py
@login_required
def review(request):
    """A view for uploading new data.
    """
					
    user=User.objects.get(username='carlos')
    if request.method == 'POST': # someone is giving us data
        formset = LayerReviewFormSet(request.POST)
        if formset.is_valid():
        		for form in formset:
        				srs = form.cleaned_data['srs']
        				layer = DataLayer(srs = srs)
        				layer = form.save(commit=False)
        				layer.author = user
        				layer.save()
        				
                                        #not sure of how to pass the hidden value to the DataLayer
        				#layer_id = DataLayer(layer_id = layer_id) 
        				#layer_id = form.save(commit=False)
        				#layer_id.author = user
        				#layer_id.save()
        				
    else: # we are asking them to review data
        # get the last upload of this user
        upload = UploadEvent.objects.filter(user=user).order_by('-date')[0]
        data_files = DataFile.objects.filter(upload=upload)   
        layer_data = [ f.get_layer_data() for f in data_files ]
        formset = LayerReviewFormSet( initial=layer_data )
        
    c = {
            'formset':formset,
            }
    return render_to_response(
            'webfinches/review.html',
            RequestContext(request, c),
            )