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from django.db import transaction
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from django.db.models import Q, F, Sum
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from drf_yasg import openapi
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from drf_yasg.utils import swagger_auto_schema
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from rest_framework import viewsets, status
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from rest_framework.decorators import action
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from rest_framework.response import Response
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from ERP_5.utils.base_views import MultipleDestroyMixin, MultipleAuditMixin
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from ERP_5.utils.paginations import GlobalPagination
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from basic_info.models import SupplierModel, SettlementAccountModel
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from erp_system.models import UserModel
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from financial_info.models import PaymentModel, PaymentItemModel
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from financial_info.serializer.payment_serializer import PaymentSerializer
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from warehouse_info.models import PurchaseStorageModel
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class PaymentViewSet(viewsets.ModelViewSet, MultipleDestroyMixin, MultipleAuditMixin):
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"""
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create:
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付款单--新增,注意：其中images_list="1,2,3,4";里面是附件的ID
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付款单新增, status: 201(成功), return: 新增付款单信息
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destroy:
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付款单--删除
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付款单删除, status: 204(成功), return: None
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multiple_delete:
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付款单--批量删除,必传参数：ids=[1,2,3,4...]
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付款单批量删除, status: 204(成功), return: None
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update:
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付款单--修改,注意：其中images_list="1,2,3,4";里面是附件的ID
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付款单修改, status: 200(成功), return: 修改后的付款单信息
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list:
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付款单--该接口可以弃用
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付款单列表信息, status: 200(成功), return: 付款单信息列表
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retrieve:
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查询某一个付款单
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查询指定ID的付款单, status: 200(成功), return: 用户付款单
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"""
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queryset = PaymentModel.objects.all()
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serializer_class = PaymentSerializer
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pagination_class = GlobalPagination
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def get_queryset(self):
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if self.action == 'find': # 过滤查询
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# 获取请求参数(在json中)：
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number_code = self.request.data.get('number_code', None)
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check_user = self.request.data.get('check_user', 0)
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start_date = self.request.data.get('start_date', None)
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end_date = self.request.data.get('start_date', None)
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supplier = self.request.data.get('supplier', 0)
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operator_user = self.request.data.get('operator_user', 0)
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status = self.request.data.get('status', None)
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account = self.request.data.get('account', 0)
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purchase_number_code = self.request.data.get('purchase_number_code', None)
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query = Q()
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if check_user:
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query.add(Q(check_user__id=check_user), 'AND')
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if account:
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query.add(Q(account__id=account), 'AND')
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if purchase_number_code:
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query.add(Q(purchase__number_code__contains=purchase_number_code), 'AND')
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if start_date:
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query.add(Q(pay_date__gt=start_date), 'AND')
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if end_date:
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query.add(Q(pay_date__lt=end_date), 'AND')
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if supplier:
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query.add(Q(supplier__id=supplier), 'AND')
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if number_code:
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query.add(Q(number_code__contains=number_code), 'AND')
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if operator_user:
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query.add(Q(operator_user__id=operator_user), 'AND')
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if status:
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query.add(Q(status=status), 'AND')
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return PaymentModel.objects.filter(query).distinct().all()
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else:
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return PaymentModel.objects.all()
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params = openapi.Schema(type=openapi.TYPE_OBJECT, properties={
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'start_date': openapi.Schema(type=openapi.TYPE_STRING, description="起始日期2020-10-01"),
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'number_code': openapi.Schema(type=openapi.TYPE_STRING, description="付款单编号(序列号)"),
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'end_date': openapi.Schema(type=openapi.TYPE_STRING, description="结束日期2020-10-01"),
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'status': openapi.Schema(type=openapi.TYPE_STRING, description="状态0或者1"),
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'supplier': openapi.Schema(type=openapi.TYPE_INTEGER, description="供应商的ID"),
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'operator_user': openapi.Schema(type=openapi.TYPE_INTEGER, description="财务人员的ID"),
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'check_user': openapi.Schema(type=openapi.TYPE_INTEGER, description="审核人员的ID"),
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'account': openapi.Schema(type=openapi.TYPE_INTEGER, description="结算账户的ID"),
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'purchase_number_code': openapi.Schema(type=openapi.TYPE_STRING, description="采购订单编号关键字"),
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})
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# 分页参数必须是query_param(看源码)
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page_param = openapi.Parameter(name='page', in_=openapi.IN_QUERY, description="页号", type=openapi.TYPE_INTEGER)
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size_param = openapi.Parameter(name='size', in_=openapi.IN_QUERY, description="每页显示数量", type=openapi.TYPE_INTEGER)
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@swagger_auto_schema(method='POST', request_body=params, manual_parameters=[page_param, size_param],
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operation_description="付款单的搜索过滤")
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@action(methods=['POST'], detail=False)
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def find(self, request, *args, **kwargs):
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return super(PaymentViewSet, self).list(request=request, *args, **kwargs)
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"""
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自定义的 批量审核的 视图函数
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"""
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body_param = openapi.Schema(type=openapi.TYPE_OBJECT, required=['ids', 'user_id'], properties={
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'ids': openapi.Schema(type=openapi.TYPE_ARRAY, items=openapi.Schema(type=openapi.TYPE_INTEGER),
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description="选择哪些需要批量的ID（主键）列表"),
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'user_id': openapi.Schema(type=openapi.TYPE_INTEGER, description="审核人的用户ID"),
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})
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@swagger_auto_schema(method='put', request_body=body_param, operation_description="批量审核")
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@action(methods=['put'], detail=False)
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@transaction.atomic # 自动 数据库事务
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def multiple_audit(self, request, *args, **kwargs):
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audit_ids = request.data.get('ids')
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user_id = request.data.get('user_id') # 用户ID
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is_audit = request.data.get('is_audit', '1') # 审核：1
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# 为了减少代码量，参数的验证就不写了
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queryset = self.get_queryset().filter(id__in=audit_ids).all()
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check_user = UserModel.objects.get(id=int(user_id))
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for pm in queryset: # 期中pm是付款单
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# 判断1：关联的采购单状态是否为“未审核”
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if pm.purchase and pm.purchase.status == '0':
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return Response(data={'detail': '采购订单未审核，不能付款'}, status=status.HTTP_400_BAD_REQUEST)
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# 判断2 付款单的状态是否为：“已审核”
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if pm.status == '1':
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return Response(data={'detail': '付款单已经审核，不需要再次审核'}, status=status.HTTP_400_BAD_REQUEST)
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# 判断3 结算账户的余额是否够用
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if pm.this_money > pm.account.balance:
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return Response(data={'detail': '选择的结算账户中的余额不够，不能付款'}, status=status.HTTP_400_BAD_REQUEST)
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# 处理关联业务逻辑
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# 业务一： 采购定金付款
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if pm.pay_category == '1' and pm.purchase and not pm.item_list.exists():
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pm.purchase.status = '5' # 已付定金
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pm.purchase.save()
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# 业务二： 供应商欠款 支付
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if pm.pay_category == '3' and not pm.item_list.exists():
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SupplierModel.objects.filter(id=pm.supplier.id).update(current_pay=F('current_pay') - pm.pay_money)
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# 业务三： 入库货款 支付
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if pm.pay_category == '2' and pm.purchase:
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if pm.item_list.exists(): # 这种判断不回从数据库中返回数据
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for item in pm.item_list.all(): # 期中item是付款项目
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# 判断4： 入库单必须是已经审核状态
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if item.purchase_storage and item.purchase_storage.status != '1':
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return Response(data={'detail': '入库单未审核或者已经付款，不能付款'}, status=status.HTTP_400_BAD_REQUEST)
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# 业务三——第1种情况 对应的入库单，是否应该：付款完成 ，首先需要查询该入库单的已经付款金额之和
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sum_dict = PaymentItemModel.objects\
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.filter(purchase_storage_id=item.purchase_storage.id, payment__status='1')\
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.aggregate(sum=Sum('this_money'))
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pay_sum = sum_dict['sum'] if sum_dict['sum'] else 0
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if item.should_money == (pay_sum + item.this_money):
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item.purchase_storage.status = '2' # 把入库单的状态修改为：付款完成
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item.purchase_storage.save()
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# 业务三——第2种情况 对应的采购单状态是否要改为：采购完成
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# 采购完成的条件： 1、该采购单必须是：全部入库状态；2、该采购单中 所有的入库单状态也都必须是：付款完成
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purchase = item.payment.purchase
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if purchase.status == '3':
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# 查询 该采购单中 所有入库单状态不是:'付款完成' 的有多少个？
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number = PurchaseStorageModel.objects\
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.filter(purchase_id=purchase.id)\
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.exclude(status='2').count()
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if number == 0: # 则 所有的入库单状态都为：付款完成
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purchase.status = '4' # 修改采购单状态为： 采购完成
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purchase.save()
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else:
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return Response(data={'detail': '没有选择付款项目，支付货款的时候必须选择'}, status=status.HTTP_400_BAD_REQUEST)
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# 至此： 三种业务都完成
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# 业务四： 修改 结算账户的余额
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SettlementAccountModel.objects.filter(id=pm.account.id)\
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.update(balance=F('balance') - pm.this_money)
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# 至此： 四种业务都完成，开始修改付款单的状态以及审核信息
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# 审核
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self.get_queryset().filter(id__in=audit_ids) \
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.update(
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status='1',
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check_user_name=check_user.real_name,
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check_user_id=check_user.id)
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return Response(status=status.HTTP_200_OK) |
