c3lf-system-3/core/inventory/shared_serializers.py

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from rest_framework import serializers
from inventory.models import Event, Item
class BasicItemSerializer(serializers.ModelSerializer):
cid = serializers.SerializerMethodField()
box = serializers.SerializerMethodField()
file = serializers.SerializerMethodField()
returned = serializers.SerializerMethodField(required=False)
event = serializers.SlugRelatedField(slug_field='slug', queryset=Event.objects.all(),
allow_null=True, required=False)
class Meta:
model = Item
fields = ['cid', 'box', 'id', 'description', 'file', 'returned', 'event']
read_only_fields = ['id']
def get_cid(self, instance):
return instance.container.id if instance.container else None
def get_box(self, instance):
return instance.container.name if instance.container else None
def get_file(self, instance):
if len(instance.files.all()) > 0:
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return sorted(instance.files.all(), key=lambda x: x.created_at, reverse=True)[0].hash
return None
def get_returned(self, instance):
return instance.returned_at is not None