mirror of
https://github.com/lemeow125/StudE-Backend.git
synced 2024-11-17 14:29:25 +08:00
122 lines
4.9 KiB
Python
122 lines
4.9 KiB
Python
from django.shortcuts import render
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from rest_framework import generics, mixins
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from rest_framework.exceptions import PermissionDenied
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from rest_framework.permissions import IsAuthenticated
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from .serializers import StudyGroupSerializer, StudyGroupCreateSerializer
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from .models import StudyGroup
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from subjects.models import Subject, SubjectInstance
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from student_status.models import StudentStatus
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from rest_framework import generics, viewsets, exceptions
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from django.contrib.gis.geos import fromstr
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from django.contrib.gis.db.models.functions import Distance
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from rest_framework import status
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from rest_framework.response import Response
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from rest_framework import permissions
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# Create your views here.
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class StudyGroupCreateView(viewsets.ModelViewSet):
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http_method_names = ['patch', 'post', 'delete']
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permission_classes = [IsAuthenticated]
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serializer_class = StudyGroupCreateSerializer
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queryset = StudyGroup.objects.all()
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class StudyGroupListView(generics.ListAPIView):
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permission_classes = [IsAuthenticated]
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serializer_class = StudyGroupSerializer
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queryset = StudyGroup.objects.all()
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def get_queryset(self):
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user = self.request.user
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if not user.is_student:
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raise PermissionDenied(
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"You must be a student to view study groups"
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)
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# Get the user's course
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user_course = user.course
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print(user_course)
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# Get the subject name of the student's subjects from SubjectInstance
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user_subject_names = user.subjects.values_list('subject', flat=True)
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print('user subjects:', user_subject_names)
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# Get the corresponding Subject models
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user_subjects = Subject.objects.filter(name__in=user_subject_names)
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# Now fetch the StudyGroups with the matching Subject models
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studygroups = StudyGroup.objects.filter(subject__in=user_subjects)
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for group in studygroups:
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# Get all StudentStatus locations of the group
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group_locations = group.students.values_list('location', flat=True)
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# Convert string locations to GEOSGeometry objects
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point_locations = [fromstr(loc, srid=4326)
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for loc in group_locations]
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# Calculate distances between every pair of locations
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distances = [(loc1.distance(
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loc2)*100000)for loc1 in point_locations for loc2 in point_locations]
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# Get the maximum distance
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group_radius = max(distances) if distances else 0
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group_radius = max(group_radius, 15)
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# Annotate the group with the radius
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group.radius = group_radius
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return studygroups
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class StudyGroupListNearView(generics.ListAPIView):
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permission_classes = [IsAuthenticated]
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serializer_class = StudyGroupSerializer
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queryset = StudyGroup.objects.all()
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def get_queryset(self):
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user = self.request.user
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user_status = StudentStatus.objects.filter(user=user).first()
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user_location = fromstr(
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user_status.location, srid=4326)
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if not user.is_student:
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raise PermissionDenied(
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"You must be a student to view study groups"
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)
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if user_status.active is False:
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raise exceptions.ValidationError("Student Status is not active")
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# Get the user's course
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user_course = user.course
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print(user_course)
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# Get the subject name of the student's subjects from SubjectInstance
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user_subject_names = user.subjects.values_list('subject', flat=True)
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# Get the corresponding Subject models
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user_subjects = Subject.objects.filter(name__in=user_subject_names)
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# Now fetch the StudyGroups with the matching Subject models that are within 100m
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studygroups = StudyGroup.objects.filter(subject__in=user_subjects).annotate(
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distance=Distance('location', user_location)).filter(distance__lte=100)
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for group in studygroups:
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# Get all StudentStatus locations of the group
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group_locations = group.students.values_list('location', flat=True)
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# Convert string locations to GEOSGeometry objects
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point_locations = [fromstr(loc, srid=4326)
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for loc in group_locations]
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# Calculate distances between every pair of locations
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distances = [(loc1.distance(
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loc2)*100000)for loc1 in point_locations for loc2 in point_locations]
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# Get the maximum distance
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group_radius = max(distances) if distances else 0
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group_radius = max(group_radius, 15)
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# Annotate the group with the radius
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group.radius = group_radius
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return studygroups
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class IsOwnerOrReadOnly(permissions.BasePermission):
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def has_object_permission(self, request, view, obj):
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# Check if the requesting user's student status matches the user field
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return obj.user == request.user.studentstatus
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