mpeltriaux
fd4729aa03
* adds compensation fetching for API v1 * refactors filter into predefined lookup dict of super class (needs to be customized on subclasses)
77 lines
2.0 KiB
Python
77 lines
2.0 KiB
Python
"""
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Author: Michel Peltriaux
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Organization: Struktur- und Genehmigungsdirektion Nord, Rhineland-Palatinate, Germany
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Contact: michel.peltriaux@sgdnord.rlp.de
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Created on: 21.01.22
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"""
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from abc import abstractmethod
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from django.http import JsonResponse
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from django.views import View
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from api.models import APIUserToken
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from api.settings import KSP_TOKEN_HEADER_IDENTIFIER
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class AbstractModelAPIView(View):
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""" Base class for API views
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The API must follow the GeoJSON Specification RFC 7946
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https://geojson.org/
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https://datatracker.ietf.org/doc/html/rfc7946
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"""
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model = None
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user = None
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lookup = None
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class Meta:
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abstract = True
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def __init__(self, *args, **kwargs):
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self.lookup = {
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"id": None, # must be set in subclasses
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"deleted__isnull": True,
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"users__in": [], # must be set in subclasses
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}
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super().__init__(*args, **kwargs)
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@abstractmethod
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def model_to_json(self, entry):
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""" Defines the returned json values of the model
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Args:
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entry (): The found entry from the database
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Returns:
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"""
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raise NotImplementedError("Must be implemented in subclasses")
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def fetch_and_serialize(self):
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""" Serializes the model entry according to the given lookup data
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Args:
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Returns:
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serialized_data (dict)
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"""
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qs = self.model.objects.filter(**self.lookup)
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serialized_data = {}
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for entry in qs:
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serialized_data[str(entry.pk)] = self.model_to_json(entry)
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return serialized_data
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def dispatch(self, request, *args, **kwargs):
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try:
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self.user = APIUserToken.get_user_from_token(request.headers.get(KSP_TOKEN_HEADER_IDENTIFIER, None))
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except PermissionError as e:
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return JsonResponse(
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{
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"error": e.__str__()
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},
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status=403
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)
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return super().dispatch(request, *args, **kwargs)
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