StudE-Backend/stude/study_groups/serializers.py

68 lines
2.7 KiB
Python

from rest_framework import serializers
from .models import StudyGroup
from accounts.models import CustomUser
from subjects.models import Subject
from drf_extra_fields.geo_fields import PointField
from landmarks.models import Landmark
class CustomUserKeyRelatedField(serializers.PrimaryKeyRelatedField):
def to_representation(self, value):
# returns the string representation of the custom user (aka the name)
return str(value)
class StudyGroupSerializer(serializers.ModelSerializer):
name = serializers.CharField()
students = serializers.StringRelatedField(many=True)
subject = serializers.SlugRelatedField(
many=False, slug_field='name', queryset=Subject.objects.all(), required=True, allow_null=False)
location = PointField()
landmark = serializers.SlugRelatedField(
queryset=Landmark.objects.all(), many=False, slug_field='name', required=False, allow_null=True)
radius = serializers.FloatField()
class Meta:
model = StudyGroup
fields = '__all__'
read_only_fields = ['landmark', 'radius', 'students']
class FullNameSlugRelatedField(serializers.SlugRelatedField):
def to_representation(self, instance):
return instance.full_name
class StudyGroupCreateSerializer(serializers.ModelSerializer):
name = serializers.CharField()
subject = serializers.SlugRelatedField(
many=False, slug_field='name', queryset=Subject.objects.all(), required=True, allow_null=False)
location = PointField()
landmark = serializers.SlugRelatedField(
queryset=Landmark.objects.all(), many=False, slug_field='name', required=False, allow_null=True)
def create(self, validated_data):
user = self.context['request'].user
study_group = StudyGroup.objects.create(
name=validated_data['name'], location=validated_data['location'], subject=validated_data['subject'])
for landmark in Landmark.objects.all():
if landmark.location.contains(validated_data['location']):
validated_data['landmark'] = landmark
break
validated_data['location'].read_only = True
return study_group
def update(self, instance, validated_data):
# Check each landmark to see if our location is within it
if ('location' in validated_data):
for landmark in Landmark.objects.all():
if landmark.location.contains(validated_data['location']):
validated_data['landmark'] = landmark
break
return super().update(instance, validated_data)
class Meta:
model = StudyGroup
fields = '__all__'
read_only_fields = ['landmark']