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AdventureLog/backend/server/worldtravel/serializers.py

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3.2 KiB
Python

import os
from .models import Country, Region, VisitedRegion, City, VisitedCity
from rest_framework import serializers
from main.utils import CustomModelSerializer
class CountrySerializer(serializers.ModelSerializer):
def get_public_url(self, obj):
return os.environ.get('PUBLIC_URL', 'http://127.0.0.1:8000').rstrip('/').replace("'", "")
flag_url = serializers.SerializerMethodField()
num_regions = serializers.SerializerMethodField()
num_visits = serializers.SerializerMethodField()
def get_flag_url(self, obj):
public_url = self.get_public_url(obj)
return public_url + '/media/' + 'flags/' + obj.country_code.lower() + '.png'
def get_num_regions(self, obj):
# get the number of regions in the country
return Region.objects.filter(country=obj).count()
def get_num_visits(self, obj):
request = self.context.get('request')
user = getattr(request, 'user', None)
if user and user.is_authenticated:
return VisitedRegion.objects.filter(region__country=obj, user_id=user).count()
return 0
class Meta:
model = Country
fields = '__all__'
read_only_fields = ['id', 'name', 'country_code', 'subregion', 'flag_url', 'num_regions', 'num_visits', 'longitude', 'latitude', 'capital']
class RegionSerializer(serializers.ModelSerializer):
num_cities = serializers.SerializerMethodField()
country_name = serializers.CharField(source='country.name', read_only=True)
class Meta:
model = Region
fields = '__all__'
read_only_fields = ['id', 'name', 'country', 'longitude', 'latitude', 'num_cities', 'country_name']
def get_num_cities(self, obj):
return City.objects.filter(region=obj).count()
class CitySerializer(serializers.ModelSerializer):
region_name = serializers.CharField(source='region.name', read_only=True)
country_name = serializers.CharField(source='region.country.name', read_only=True
)
class Meta:
model = City
fields = '__all__'
read_only_fields = ['id', 'name', 'region', 'longitude', 'latitude', 'region_name', 'country_name']
class VisitedRegionSerializer(CustomModelSerializer):
longitude = serializers.DecimalField(source='region.longitude', max_digits=9, decimal_places=6, read_only=True)
latitude = serializers.DecimalField(source='region.latitude', max_digits=9, decimal_places=6, read_only=True)
name = serializers.CharField(source='region.name', read_only=True)
class Meta:
model = VisitedRegion
fields = ['id', 'user_id', 'region', 'longitude', 'latitude', 'name']
read_only_fields = ['user_id', 'id', 'longitude', 'latitude', 'name']
class VisitedCitySerializer(CustomModelSerializer):
longitude = serializers.DecimalField(source='city.longitude', max_digits=9, decimal_places=6, read_only=True)
latitude = serializers.DecimalField(source='city.latitude', max_digits=9, decimal_places=6, read_only=True)
name = serializers.CharField(source='city.name', read_only=True)
class Meta:
model = VisitedCity
fields = ['id', 'user_id', 'city', 'longitude', 'latitude', 'name']
read_only_fields = ['user_id', 'id', 'longitude', 'latitude', 'name']