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centurion_erp/app/api/views/mixin.py

240 lines
6.2 KiB
Python

from django.core.exceptions import ObjectDoesNotExist, PermissionDenied
from django.forms import ValidationError
from rest_framework import exceptions
from rest_framework.permissions import DjangoObjectPermissions
from access.mixin import OrganizationMixin
from core import exceptions as centurion_exceptions
class OrganizationPermissionAPI(DjangoObjectPermissions, OrganizationMixin):
"""checking organization membership"""
def has_permission(self, request, view):
# if view.kwargs.get('pk', None):
# if(
# str(type(view.get_object()).__name__).lower() == 'organization'
# ):
# if view.get_object().manager == request.user:
# return True
return self.permission_check(request, view)
def has_object_permission(self, request, view, obj):
# if view.kwargs.get('pk', None):
# if(
# str(type(obj).__name__).lower() == 'organization'
# ):
# if obj.manager == request.user:
# return True
return self.permission_check(request, view)
def permission_check(self, request, view, obj=None) -> bool:
if request.user.is_anonymous:
return False
try:
self.request = request
method = self.request._request.method.lower()
if method.upper() not in view.allowed_methods:
view.http_method_not_allowed(request._request)
if request.user.is_authenticated and method == 'options':
return True
if hasattr(view, 'get_queryset'):
queryset = view.get_queryset()
self.obj = queryset.model
elif hasattr(view, 'queryset'):
if view.queryset.model._meta:
self.obj = view.queryset.model
object_organization = None
if method == 'get':
action = 'view'
elif method == 'post':
action = 'add'
if 'organization' in request.data:
serializer = None
try: # Method throws exception if not overridden
serializer = view.get_serializer_class()
except Exception as e:
serializer = None
try: # Method throws exception if not overridden
serializer = view.get_serializer()
except Exception as e:
serializer = None
if 'organization' not in getattr(serializer.Meta, 'read_only_fields', []):
if not request.data['organization']:
raise centurion_exceptions.ValidationError('you must provide an organization')
object_organization = int(request.data['organization'])
elif method == 'patch':
action = 'change'
elif method == 'put':
action = 'change'
elif method == 'delete':
action = 'delete'
else:
action = 'view'
if hasattr(self, 'obj'):
permission = self.obj._meta.app_label + '.' + action + '_' + self.obj._meta.model_name
self.permission_required = [ permission ]
if hasattr(view, 'get_dynamic_permissions'):
self.permission_required = view.get_dynamic_permissions()
if view:
if 'organization_id' in view.kwargs:
if view.kwargs['organization_id']:
object_organization = view.kwargs['organization_id']
if object_organization is None and 'pk' in view.kwargs:
try:
self.obj = view.queryset.get(pk=view.kwargs['pk']) # Here
except ObjectDoesNotExist:
return False
if object_organization is None and getattr(view, 'parent_model', None):
parent_model = view.parent_model.objects.get(pk=view.kwargs[view.parent_model_pk_kwarg])
object_organization = parent_model.organization.id
if obj:
if obj.get_organization():
object_organization = obj.get_organization().id
if hasattr(self.obj, 'is_global'):
if obj.is_global:
object_organization = 0
if 'pk' in view.kwargs:
if object_organization is None and view.queryset.model._meta.model_name == 'tenant' and view.kwargs['pk']:
object_organization = view.kwargs['pk']
if object_organization is None:
try:
self.obj = view.queryset.get()
except ObjectDoesNotExist:
return False
if hasattr(self, 'obj') and object_organization is None and 'pk' in view.kwargs:
if self.obj.get_organization():
object_organization = self.obj.get_organization().id
if hasattr(self.obj, 'is_global'):
if self.obj.is_global:
object_organization = 0
# ToDo: implement proper checking of listview as this if allows ALL.
if 'pk' not in view.kwargs and method == 'get' and object_organization is None:
return True
if hasattr(self, 'default_organization'):
object_organization = self.default_organization
if method == 'post' and hasattr(self, 'default_organization'):
if self.default_organization:
object_organization = self.default_organization.id
if not self.has_organization_permission(object_organization) and not request.user.is_superuser:
raise PermissionDenied('You are not part of this organization')
except centurion_exceptions.MethodNotAllowed as e:
raise centurion_exceptions.MethodNotAllowed( str(method).upper() )
except Exception as e:
return False
return True