new: basic email template with csv attachments for the orded and each line

order/models.py

@@ -16,7 +16,9 @@ class SaleOrder(BaseModel):
         readonly = ["sold_to", "sold_at", "total"]
 
     name = models.CharField(max_length=200, unique=True)
-    sold_to = models.ForeignKey(User, on_delete=models.DO_NOTHING, default=None, null=True)
+    sold_to = models.ForeignKey(
+        User, on_delete=models.DO_NOTHING, default=None, null=True
+    )
     total = models.FloatField(max_length=200, default=0.0)
     sold_at = models.DateTimeField(max_length=200, null=True, default=None)
 
@@ -37,6 +39,14 @@ class SaleOrder(BaseModel):
             self.save()
         return self
 
+    def as_csv(self) -> str:
+        lines_parsed = ""
+        for line in self.saleorderline_set.all():
+            lines_parsed = f"{lines_parsed}::{line.id}/{line.name}"
+        return f"""name,sold_to,total,sold_at,lines
+{self.name},{self.sold_to.first_name} {self.sold_to.last_name},{self.total},{self.sold_at},{lines_parsed} 
+        """
+
 
 class Product(models.Model):
     name = models.CharField(max_length=200)
@@ -48,3 +58,8 @@ class SaleOrderLine(models.Model):
     product = models.ForeignKey(Product, on_delete=models.DO_NOTHING, null=True)
     order = models.ForeignKey(SaleOrder, on_delete=models.CASCADE, null=True)
     quantity = models.IntegerField(default=1)
+
+    def as_csv(self) -> str:
+        return f"""name,product,quantity
+{self.name},{self.product.name},{self.quantity}
+        """