97 lines
3.4 KiB
Python
97 lines
3.4 KiB
Python
from apps.herd.services.services import get_rancher_statistics, rancher_quota_weight
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from apps.pos_device.pos.api.v1.serializers.device import DeviceSerializer
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from apps.herd.pos.api.v1.serializers import RancherSerializer
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from apps.warehouse.exceptions import (
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TotalInventorySaleException
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)
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from apps.warehouse import models as warehouse_models
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from rest_framework import serializers
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from django.db import models
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class InventoryEntrySerializer(serializers.ModelSerializer):
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class Meta:
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model = warehouse_models.InventoryEntry
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fields = [
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"id",
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"create_date",
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"modify_date",
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"organization",
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"distribution",
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"weight",
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"balance",
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"lading_number",
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"delivery_address",
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"is_confirmed",
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"notes",
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]
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def to_representation(self, instance):
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""" custom output of inventory entry serializer """
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representation = super().to_representation(instance)
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if instance.document:
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representation['document'] = instance.document
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if instance.distribution:
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# distribution data
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representation['distribution'] = {
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'distribution_identity': instance.distribution.distribution_id,
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'sale_unit': instance.distribution.quota.sale_unit.unit,
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'id': instance.distribution.id
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}
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representation['quota'] = {
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'quota_identity': instance.distribution.quota.quota_id,
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'quota_weight': instance.distribution.quota.quota_weight,
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}
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representation['product'] = {
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'name': instance.distribution.quota.product.name,
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'id': instance.distribution.quota.product.id,
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}
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# rancher herd & live stock statistics
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representation['rancher_statistics'] = get_rancher_statistics(self.context['rancher'])
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# rancher live stock statistics by inventory entry
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representation['rancher_quota_weight_statistics'] = rancher_quota_weight(
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self.context['rancher'], instance
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)
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return representation
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class InventoryQuotaSaleTransactionSerializer(serializers.ModelSerializer):
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class Meta: # noqa
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model = warehouse_models.InventoryQuotaSaleTransaction
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fields = '__all__'
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depth = 0
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def validate(self, attrs):
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"""
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validate total inventory sale should be fewer than
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inventory entry from distribution
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"""
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inventory_entry = attrs['inventory_entry']
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distribution = attrs['quota_distribution']
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total_sale_weight = inventory_entry.inventory_sales.aggregate(
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total=models.Sum('weight')
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)['total'] or 0
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if total_sale_weight + attrs['weight'] > distribution.warehouse_balance:
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raise TotalInventorySaleException()
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return attrs
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def to_representation(self, instance):
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""" customize output of transactions serializer """
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representation = super().to_representation(instance)
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representation['rancher'] = RancherSerializer(instance.rancher).data
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representation['pos_device'] = DeviceSerializer(instance.pos_device).data
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representation['seller_organization'] = instance.seller_organization.name
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representation['inventory_entry'] = InventoryEntrySerializer(instance.inventory_entry).data
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return representation
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