67 lines
2.1 KiB
Python
67 lines
2.1 KiB
Python
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"""
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Provide urlresolver functions that return fully qualified URLs or view names
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"""
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from django.urls import NoReverseMatch
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from django.urls import reverse as django_reverse
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from django.utils.functional import lazy
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from rest_framework.settings import api_settings
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from rest_framework.utils.urls import replace_query_param
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def preserve_builtin_query_params(url, request=None):
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"""
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Given an incoming request, and an outgoing URL representation,
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append the value of any built-in query parameters.
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"""
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if request is None:
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return url
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overrides = [
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api_settings.URL_FORMAT_OVERRIDE,
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]
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for param in overrides:
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if param and (param in request.GET):
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value = request.GET[param]
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url = replace_query_param(url, param, value)
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return url
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def reverse(viewname, args=None, kwargs=None, request=None, format=None, **extra):
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"""
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If versioning is being used then we pass any `reverse` calls through
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to the versioning scheme instance, so that the resulting URL
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can be modified if needed.
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"""
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scheme = getattr(request, 'versioning_scheme', None)
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if scheme is not None:
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try:
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url = scheme.reverse(viewname, args, kwargs, request, format, **extra)
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except NoReverseMatch:
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# In case the versioning scheme reversal fails, fallback to the
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# default implementation
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url = _reverse(viewname, args, kwargs, request, format, **extra)
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else:
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url = _reverse(viewname, args, kwargs, request, format, **extra)
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return preserve_builtin_query_params(url, request)
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def _reverse(viewname, args=None, kwargs=None, request=None, format=None, **extra):
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"""
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Same as `django.urls.reverse`, but optionally takes a request
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and returns a fully qualified URL, using the request to get the base URL.
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"""
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if format is not None:
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kwargs = kwargs or {}
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kwargs['format'] = format
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url = django_reverse(viewname, args=args, kwargs=kwargs, **extra)
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if request:
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return request.build_absolute_uri(url)
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return url
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reverse_lazy = lazy(reverse, str)
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