finance email

finance/models.py

@@ -58,7 +58,7 @@ class Invoice(models.Model):
                                blank=True, editable=False)
     bill = models.ForeignKey(to=Bill, verbose_name="Связный счёт")
     is_open = models.BooleanField(default=True, verbose_name="Открывает ли платёж курс")
-    date = models.DateTimeField(auto_now_add=True)
+    date = models.DateTimeField(auto_now_add=True, verbose_name="Дата создания")
 
     def get_comment(self):
         return '''Вам выставлен счёт,''' if \
@@ -72,5 +72,15 @@ class Invoice(models.Model):
         verbose_name_plural = 'Платежи'
 
 
-# class InstallmentPlan(models.Model):
-#     bill = models.OneToOneField(to=Bill, verbose_name="Связный счёт")
+class InstallmentPlan(models.Model):
+    bill = models.OneToOneField(to=Bill, verbose_name="Связный счёт")
+    date = models.DateTimeField(auto_now_add=True, verbose_name="Дата создания")
+    invoice_amount = models.IntegerField(verbose_name="Количество платежей")
+    price = models.IntegerField(verbose_name="Цена одного платежа")
+
+    def __str__(self):
+        return '%s' % self.bill.user.email
+
+    class Meta:
+        verbose_name = 'Рассрочка'
+        verbose_name_plural = 'Рассрочки'

finance/serializers.py

@@ -28,7 +28,7 @@ class BillSerializer(serializers.ModelSerializer):
 class InvoiceSerializer(serializers.ModelSerializer):
     status = serializers.SerializerMethodField()
     method = serializers.SerializerMethodField()
-    yandex_pay_id = serializers.SerializerMethodField()
+    yandex_pay = serializers.SerializerMethodField()
 
     class Meta:
         model = Invoice
@@ -39,7 +39,7 @@ class InvoiceSerializer(serializers.ModelSerializer):
         return self.get_status_display()
 
     @staticmethod
-    def get_yandex_pay_id(self):
+    def get_yandex_pay(self):
         return None if self.yandex_pay is None else self.yandex_pay.id
 
     @staticmethod