add: add two new api

core/apps/finance/serializers/expence_contract.py

@@ -0,0 +1,71 @@
+from django.db import transaction
+
+from rest_framework import serializers
+
+from core.apps.finance.models import ExpenceContract
+
+
+class ExpenceContractSerializer(serializers.ModelSerializer):
+    project_folder = serializers.SerializerMethodField(method_name='get_project_folder')
+    project = serializers.SerializerMethodField(method_name='get_project')
+    expence_type = serializers.SerializerMethodField(method_name='get_expence_type')
+    counterparty = serializers.SerializerMethodField(method_name='get_counterparty')
+    user = serializers.SerializerMethodField(method_name='get_user')
+
+    class Meta:
+        model = ExpenceContract
+        fields = [
+            'id', 'project_folder', 'project', 'expence_type', 'counterparty', 'price', 
+            'currency', 'date', 'comment', 'user'
+        ]
+        extra_kwargs = {
+            'id': {'read_only': True},
+            'user': {'read_only': True},
+        }
+    
+    def get_user(self, obj):
+        return {
+            'id': obj.user.id,
+            'full_name': obj.user.full_name
+        }
+
+    def get_counterparty(self, obj):
+        return {
+            'id': obj.counterparty.id,
+            'name': obj.counterparty.name,
+        } if obj.counterparty else None
+    
+    def get_expence_type(self, obj):
+        return {
+            'id': obj.expence_type.id,
+            'name': obj.expence_type.name
+        } if obj.expence_type else None
+    
+    def get_project(self, obj):
+        return {
+            'id': obj.project.id,
+            'name': obj.project.name
+        } if obj.project else None
+
+    def get_project_folder(self, obj):
+        return {
+            'id': obj.project_folder.id,
+            'name': obj.project_folder.name
+        }
+
+
+    def create(self, validated_data):
+        with transaction.atomic():
+            expence_contract = ExpenceContract.objects.create(
+                project_folder=validated_data.get('project_folder'),
+                project=validated_data.get('project'),
+                expence_type=validated_data.get('expence_type'),
+                counterparty=validated_data.get('counterparty'),
+                price=validated_data.get('price'),
+                currency=validated_data.get('currency'),
+                date=validated_data.get('date'),
+                comment=validated_data.get('comment'),
+                user=self.context.get('user'),
+            )
+            return expence_contract
+