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get_model_or_404

Author:
blackbrrr
Posted:
August 28, 2008
Language:
Python
Version:
.96
Score:
1 (after 1 ratings)

Attempt to get a model from the AppCache and raise Http404 if it cannot be found.

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def get_model_or_404(app_name, model_name):
    """
    Attempt to get a model from the ``AppCache``
    and raise ``Http404`` if it cannot be found
    """
    from django.db.models import get_model
    from django.http import Http404
    
    model_class = get_model(app_name, model_name)
    
    if model_class is None:
        raise Http404("This model does not exist!")

    return model_class

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