28 строки
1.2 KiB
Python
28 строки
1.2 KiB
Python
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from rest_framework.versioning import URLPathVersioning
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from rest_framework import exceptions
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class PulseAPIVersioning(URLPathVersioning):
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def determine_version(self, request, *args, **kwargs):
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"""
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We override the super class' determine_version function because
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we want the version in the url to be optional. The difference between the
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functions is that along with using the default version if
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the version_param IS NOT present in the kwargs, we also use
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the default version if the version_param IS present in the kwargs
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but is None. Hence, if a version is not specified in the url, the version_param
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is passed in the kwargs but is set to None and will result in the
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version being set to the default_version.
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See https://groups.google.com/forum/#!topic/django-rest-framework/r7s9M-VQX_k
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for information on whether DRF will do this on its own.
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"""
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version = kwargs.get(self.version_param, self.default_version)
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if version is None:
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version = self.default_version
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if not self.is_allowed_version(version):
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raise exceptions.NotFound(self.invalid_version_message)
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return version
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