[#17]采购模块 (#280)

* [#17] 采购模块
修改一个字段、给前端展示相应字段的中文

* flake8

* 为供应商文件和供应商报价单提供了filter

* flake8

* flake8

* [#17]采购模块
给文件字段增添了两个信息
重写了合同模块的计算

* bug

* 优化查询

* @staticmethod

Procurement/api/contact_detail.py

@@ -3,13 +3,15 @@
 from Core.utils.pagination import SmallResultsSetPagination
 from Procurement.models import ContractDetail
 from Procurement import serializers
+from Procurement import filters
 
 
 # 合同金额明细
 class ContractDetailViewSet(viewsets.ModelViewSet):
     pagination_class = SmallResultsSetPagination
     queryset = ContractDetail.objects.all().order_by('-pk')
     serializer_class = serializers.ContractDetailSerializer
+    filter_class = filters.ContractDetailFilter
 
     def perform_create(self, serializer):
         serializer.save(submitter=self.request.user,)

Procurement/filters/__init__.py

@@ -11,8 +11,11 @@
 
 from .material_excution import (MaterialExcutionFilter, )
 
+from .contract_details import (ContractDetailFilter, )
+
 __all__ = ['PurchaseOrderFilter', 'BiddingSheetFilter',
            'BiddingApplicationFilter', 'SupplyRelationshipFilter',
            'StatusChangeFilter', 'ProcurementMaterialFilter',
            'MaterialSubApplyFilter', 'MaterialExcutionFilter',
-           'SupplyDocumentFilter', 'SupplyQuotationFilter']
+           'SupplyDocumentFilter', 'SupplyQuotationFilter',
+           'ContractDetailFilter']

Procurement/filters/contract_details.py

@@ -0,0 +1,10 @@
+from django_filters import rest_framework as filters
+
+from Procurement.models import ContractDetail
+
+
+class ContractDetailFilter(filters.FilterSet):
+
+    class Meta:
+        model = ContractDetail
+        fields = ('bidding_sheet', )

Procurement/serializers/contact_detail.py

@@ -1,5 +1,5 @@
 from rest_framework import serializers
-
+from django.db.models import Sum
 from Procurement.models import ContractDetail
 
 
@@ -10,8 +10,29 @@ class ContractDetailSerializer(serializers.ModelSerializer):
         source='bidding_sheet.contract_amount', read_only=True)
     billing_amount = serializers.FloatField(
         source='bidding_sheet.billing_amount', read_only=True)
+    accept_supplier = serializers.CharField(
+        source='bidding_sheet.biddingacceptance.accept_supplier',
+        read_only=True)
+    content = serializers.CharField(
+        source='bidding_sheet.biddingacceptance.content',
+        read_only=True)
+    prepaid_amount = serializers.SerializerMethodField(read_only=True)
+    payable_amount = serializers.SerializerMethodField(read_only=True)
 
     class Meta:
         model = ContractDetail
         fields = '__all__'
         read_only_fields = ('submitter',)
+
+    @staticmethod
+    def get_sum(obj):
+        if not hasattr(obj, 'sum'):
+            obj.sum = obj.bidding_sheet.contractdetail_set.aggregate(
+                Sum('amount'))['amount__sum']
+        return obj.sum
+
+    def get_prepaid_amount(self, obj):
+        return self.get_sum(obj)
+
+    def get_payable_amount(self, obj):
+        return obj.bidding_sheet.billing_amount - self.get_sum(obj)

Procurement/serializers/material_execution.py

@@ -11,6 +11,7 @@ class MaterialExecutionDetailSerializer(serializers.ModelSerializer):
     class Meta:
         model = MaterialExecutionDetail
         fields = '__all__'
+        read_only_fields = ('material_execution',)
 
 
 class MaterialExecutionSerializer(serializers.ModelSerializer):

Procurement/serializers/supplier.py

@@ -14,11 +14,20 @@ class Meta:
 
 
 class SupplierDocumentSerializer(serializers.ModelSerializer):
+    doc_name = serializers.SerializerMethodField(read_only=True)
+    doc_size = serializers.SerializerMethodField(read_only=True)
 
     class Meta:
         model = SupplierDocument
         fields = '__all__'
 
+    def get_doc_name(self, obj):
+        name = obj.path.name.split('/')
+        return name[-1]
+
+    def get_doc_size(self, obj):
+        return obj.path.size
+
 
 class QuotationSerializer(serializers.ModelSerializer):