InvenTree/InvenTree/generic/states/api.py

85 lines
2.8 KiB
Python

"""Generic implementation of status api functions for InvenTree models."""
import inspect
from drf_spectacular.utils import OpenApiResponse, extend_schema
from rest_framework import permissions, serializers
from rest_framework.generics import GenericAPIView
from rest_framework.response import Response
from InvenTree.serializers import EmptySerializer
from .states import StatusCode
class StatusViewSerializer(serializers.Serializer):
"""Serializer for the StatusView responses."""
class_name = serializers.CharField()
values = serializers.DictField()
class StatusView(GenericAPIView):
"""Generic API endpoint for discovering information on 'status codes' for a particular model.
This class should be implemented as a subclass for each type of status.
For example, the API endpoint /stock/status/ will have information about
all available 'StockStatus' codes
"""
permission_classes = [permissions.IsAuthenticated]
# Override status_class for implementing subclass
MODEL_REF = 'statusmodel'
def get_status_model(self, *args, **kwargs):
"""Return the StatusCode model based on extra parameters passed to the view."""
status_model = self.kwargs.get(self.MODEL_REF, None)
if status_model is None:
raise serializers.ValidationError(
f"StatusView view called without '{self.MODEL_REF}' parameter"
)
return status_model
@extend_schema(
description='Retrieve information about a specific status code',
responses={
200: OpenApiResponse(description='Status code information'),
400: OpenApiResponse(description='Invalid request'),
},
)
def get(self, request, *args, **kwargs):
"""Perform a GET request to learn information about status codes."""
status_class = self.get_status_model()
if not inspect.isclass(status_class):
raise NotImplementedError('`status_class` not a class')
if not issubclass(status_class, StatusCode):
raise NotImplementedError('`status_class` not a valid StatusCode class')
data = {'class': status_class.__name__, 'values': status_class.dict()}
return Response(data)
class AllStatusViews(StatusView):
"""Endpoint for listing all defined status models."""
permission_classes = [permissions.IsAuthenticated]
serializer_class = EmptySerializer
def get(self, request, *args, **kwargs):
"""Perform a GET request to learn information about status codes."""
data = {}
for status_class in StatusCode.__subclasses__():
data[status_class.__name__] = {
'class': status_class.__name__,
'values': status_class.dict(),
}
return Response(data)