Filter data on related object in Django Rest Framework

Question

I have next ModelSerializers.

I need the statistics data display at 6 days range by default (see date field in StatisticSerializer). User can to change this date range (from frontend get two parameters: start_date and end_date, which not is in Models and Serializers. How can I make this functional?

serializers

class StatisticSerializer(serializers.ModelSerializer):
    class Meta:
        model = Statistic
        fields = ['date', 'clicks', 'page_views']


class UserStatisticSerializer(serializers.ModelSerializer):
    statistics = StatisticSerializer(many=True)

    class Meta:
        model = User
        fields = [
            'first_name', 'last_name', 'gender', 'ip_address', 'statistics',
        ]

views

class UserStatisticApiView(RetrieveAPIView):
    serializer_class = UserStatisticSerializer
    queryset = User.objects.all()

Are users supposed to see all users' statistics or just their own? — Jonathan Richards
– Jonathan Richards, Commented Jan 17, 2020 at 8:14

Таалай Дюшебеков · Accepted Answer · 2020-01-17 06:42:54Z

3

you can use SerializerMethodField(), docs enter link description here

there just some Pseudocode

class StatisticSerializer(serializers.ModelSerializer):
    class Meta:
        model = Statistic
        fields = ['date', 'clicks', 'page_views']


class UserStatisticSerializer(serializers.ModelSerializer):
    filtered_statistc = serializers.SerializerMethodField()

    class Meta:
        model = User
        fields = [
            'first_name', 'last_name', 'gender', 'ip_address', 'filtered_statistc',
        ]

    def get_filtered_statistc(self,obj):
        result = Statistic.objects.filter('filter there by your params')
        serialized_result = StatisticSerializer(data=result, many=True)
        return serialized_result

answered Jan 17, 2020 at 6:42

Таалай Дюшебеков

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