Django: Passing model object name through url

Question

I want pass model name as parameter to views.py
But it does not woork very well
Please guide me how to do this Thank you

when I go to http://127.0.0.1:8000/filter/image/party/
There is error said :

'unicode' object has no attribute 'objects'

but the terminal can print mm='Party'

Here is my code:

models.py:

class Party(models.Model):  
     ....
class Fun(models.Model):  
     ....

urls.py:

urlpatterns = patterns('',
    url(r'^image/(?P<model>\w+)/$', views.object_list_1 ),

views.py:

def object_list_1(request, model):
    mm =  model.capitalize()
    obj_list = mm.objects.all()        
    template_name = 'filterimgs/%s_list.html' % mm.lower()
    return render_to_response(template_name, {'object_list': obj_list, 
                          context_instance=RequestContext(request))

Daniel Roseman · Accepted Answer · 2014-09-21 13:36:36Z

5

Not sure why you think this would work: just calling capitalize() on a string doesn't magically transform it into a model class.

You'll need to look up the actual class by its name in Django's model registry. Luckily, there is a function for that: get_model.

from django.db.models.loading import get_model
cls = get_model(app_name, model)
obj_list = cls.objects.all()

answered Sep 21, 2014 at 13:36

Daniel Roseman

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falsetru · Accepted Answer · 2014-09-21 13:35:06Z

0

You should map the model name to model class.

One way is using getattr to get model instance from app module.

from app_name import models

def object_list_1(request, model):
    mm =  model.capitalize()
    cls = getattr(models, mm)
    obj_list = cls.objects.all()
    template_name = 'filterimgs/%s_list.html' % mm.lower()
    return render_to_response(template_name, {'object_list': obj_list,
                          context_instance=RequestContext(request))

Or using explicit mapping:

name_to_model_class = {'Party': Party, 'Fun': Fun}

def object_list_1(request, model):
    mm =  model.capitalize()
    cls = name_to_model_class[mm]
    obj_list = cls.objects.all()
    template_name = 'filterimgs/%s_list.html' % mm.lower()
    return render_to_response(template_name, {'object_list': obj_list,
                          context_instance=RequestContext(request))

answered Sep 21, 2014 at 13:35

falsetru

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1 Comment

user2492364 Over a year ago

Thanks you let me know the problem:'Party' and Party is different

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