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88 lines
3.3 KiB
88 lines
3.3 KiB
from django.db import transaction
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from rest_framework import serializers
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from ERP_5.utils.get_inventory import get_inventory_by_goods
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from goods_info.models import GoodsModel, GoodsInventoryModel, AttachmentModel
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from goods_info.serializer.attachment_serializer import AttachmentsSerializer
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from goods_info.serializer.category_serializer import CategorySerializer
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from goods_info.serializer.units_serializer import UnitsSerializer
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class GoodsInventorySerializer(serializers.ModelSerializer):
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"""
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货品库存信息的序列化器
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"""
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class Meta:
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model = GoodsInventoryModel
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fields = '__all__'
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class GoodsBaseSerializer(serializers.ModelSerializer):
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"""
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商品货品的序列化器
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"""
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# 商品对应的多个库存记录
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inventory_list = GoodsInventorySerializer(many=True, required=True)
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class Meta:
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model = GoodsModel
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fields = '__all__'
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def create(self, validated_data):
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# 添加货品, 把库存信息先拿出来
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inventory_list = validated_data.pop('inventory_list')
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with transaction.atomic():
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goods = GoodsModel.objects.create(**validated_data)
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for item in inventory_list: # item是字典
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# item代表一条库存信息, # 新建时，当前库存=初始库存
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item['cur_inventory'] = item.get('init_inventory', 0)
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GoodsInventoryModel.objects.create(goods=goods, **item)
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return goods
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def update(self, instance, validated_data):
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item_list = validated_data.pop('inventory_list')
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for item in item_list: # 遍历每条库存信息，并修改最高库存和最低库存
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GoodsInventoryModel.objects.filter(warehouse_name=item['warehouse_name'], goods_id=instance.id).update(
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lowest_inventory=item.get('lowest_inventory', 0), highest_inventory=item.get('highest_inventory', 0))
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goods = super(GoodsBaseSerializer, self).update(instance=instance, validated_data=validated_data)
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return goods
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class GoodsGetSerializer(serializers.ModelSerializer):
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"""
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商品查询的序列化器
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目标：
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1、把商品的单位——所有信息展示出来
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2、展示商品信息所属的商品类别——所有信息展示出来
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3、展示商品的所有附件图片——所有图片信息展示出来
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4、展示商品的所有仓库中的库存信息——总库存
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"""
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units = UnitsSerializer(read_only=True)
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category = CategorySerializer(read_only=True)
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images_list = serializers.SerializerMethodField(read_only=True)
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# 当前货品的总库存
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cur_inventory = serializers.SerializerMethodField(read_only=True)
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class Meta:
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model = GoodsModel
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fields = '__all__'
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def get_images_list(self, obj):
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result = [] # 返回的列表， 列表里面是字典(每个字典就是一个附件)
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if obj.images_list:
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ids = obj.images_list.split(',') # 按照逗号分割
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if ids:
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for _id in ids:
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item = AttachmentModel.objects.get(id=_id)
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ser = AttachmentsSerializer(instance=item)
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result.append(ser.data)
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return result
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def get_cur_inventory(self, obj):
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# 获取一个商品的总库存
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return get_inventory_by_goods(obj.id) |