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"""
Linked data decorator hack for rdf/xml and html representations:
def company(request, company_id):
# return html for company
...
@rdf_view
def company_rdf(request, company_id):
# return rdf/xml for company
...
"""
import re
import django.core
import mimeparse
def rdf_view(f):
def f1(request, **kwargs):
# construct a http redirect response to html view
html_view = f.func_name.replace('_rdf', '')
html_url = django.core.urlresolvers.reverse(html_view, kwargs=kwargs)
html_redirect = responses.HttpResponseSeeOther(html_url)
# determine the clients preferred representation
available = ['text/html', 'application/rdf+xml']
accept = request.META.get('HTTP_ACCEPT', 'application/rdf+xml')
match = mimeparse.best_match(available, accept)
# figure out what user agent we are talking to
ua = request.META.get('HTTP_USER_AGENT')
if request.get_full_path().endswith('.rdf'):
return f(request, **kwargs)
elif ua and 'MSIE' in ua:
return html_redirect
elif match == 'application/rdf+xml':
response = f(request, **kwargs)
response['Vary'] = 'Accept'
return response
elif match == 'text/html':
return html_redirect
else:
return responses.HttpResponseUnsupportedMediaType()
return f1
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