passing a string to model.objects.filter() method

[M.Ganesh]

Hi All

#my function code
def object_list(request, object, filter_string = None):
    if filter:
        object_list = object.objects.filter(filter_string)
    else:
        object_list = object.objects.all()
       
    return render_to_response(object.__name__ + '_list.html',
                              {object.__name__ + '_list': object_list},
                              RequestContext(request))

When I call this with a string value for filter_string like below:

def location_list(request):
    if request.has_key('entity'):
        return object_list(request, location, 'entity_id=' + 
request['entity'])
    else:
        return object_list(request, location)
   
I get the following error message.

'unicode' object has no attribute 'get_sql'



How to pass on a string to the filter() method?

Thanks in advance

Regards Ganesh


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