Refactoring forms for order line items

- Required some fixes for money serializer
-

InvenTree/InvenTree/serializers.py

@@ -5,16 +5,58 @@ Serializers used in various InvenTree apps
 # -*- coding: utf-8 -*-
 from __future__ import unicode_literals
 
+
 import os
 
+from decimal import Decimal
+
 from django.conf import settings
 from django.contrib.auth.models import User
 from django.core.exceptions import ValidationError as DjangoValidationError
+from django.utils.translation import ugettext_lazy as _
+
+from djmoney.contrib.django_rest_framework.fields import MoneyField
+from djmoney.money import Money
+from djmoney.utils import MONEY_CLASSES, get_currency_field_name
 
 from rest_framework import serializers
 from rest_framework.utils import model_meta
 from rest_framework.fields import empty
 from rest_framework.exceptions import ValidationError
+from rest_framework.serializers import DecimalField
+
+
+class InvenTreeMoneySerializer(MoneyField):
+    """
+    Custom serializer for 'MoneyField',
+    which ensures that passed values are numerically valid
+
+    Ref: https://github.com/django-money/django-money/blob/master/djmoney/contrib/django_rest_framework/fields.py
+    """
+
+    def get_value(self, data):
+        """
+        Test that the returned amount is a valid Decimal
+        """
+
+        amount = super(DecimalField, self).get_value(data)
+
+        # Convert an empty string to None
+        if len(str(amount).strip()) == 0:
+            amount = None
+
+        try:
+            if amount is not None:
+                amount = Decimal(amount)
+        except:
+            raise ValidationError(_("Must be a valid number"))
+
+        currency = data.get(get_currency_field_name(self.field_name), self.default_currency)
+
+        if currency and amount is not None and not isinstance(amount, MONEY_CLASSES) and amount is not empty:
+            return Money(amount, currency)
+        
+        return amount
 
 
 class UserSerializer(serializers.ModelSerializer):

InvenTree/order/api.py

@@ -514,7 +514,7 @@ class SOLineItemList(generics.ListCreateAPIView):
     ]
 
 
-class SOLineItemDetail(generics.RetrieveUpdateAPIView):
+class SOLineItemDetail(generics.RetrieveUpdateDestroyAPIView):
     """ API endpoint for detail view of a SalesOrderLineItem object """
 
     queryset = SalesOrderLineItem.objects.all()

InvenTree/order/models.py

@@ -698,7 +698,13 @@ class OrderLineItem(models.Model):
     class Meta:
         abstract = True
 
-    quantity = RoundingDecimalField(max_digits=15, decimal_places=5, validators=[MinValueValidator(0)], default=1, verbose_name=_('Quantity'), help_text=_('Item quantity'))
+    quantity = RoundingDecimalField(
+        verbose_name=_('Quantity'),
+        help_text=_('Item quantity'),
+        default=1,
+        max_digits=15, decimal_places=5,
+        validators=[MinValueValidator(0)],
+    )
 
     reference = models.CharField(max_length=100, blank=True, verbose_name=_('Reference'), help_text=_('Line item reference'))
 

InvenTree/order/serializers.py

@@ -16,6 +16,7 @@ from sql_util.utils import SubqueryCount
 import djmoney.settings
 
 from InvenTree.serializers import InvenTreeModelSerializer
+from InvenTree.serializers import InvenTreeMoneySerializer
 from InvenTree.serializers import InvenTreeAttachmentSerializerField
 
 from company.serializers import CompanyBriefSerializer, SupplierPartSerializer
@@ -124,6 +125,8 @@ class POLineItemSerializer(InvenTreeModelSerializer):
     part_detail = PartBriefSerializer(source='get_base_part', many=False, read_only=True)
     supplier_part_detail = SupplierPartSerializer(source='part', many=False, read_only=True)
 
+    purchase_price = InvenTreeMoneySerializer(max_digits=19, decimal_places=4)
+
     purchase_price_string = serializers.CharField(source='purchase_price', read_only=True)
 
     destination = LocationBriefSerializer(source='get_destination', read_only=True)
@@ -335,13 +338,20 @@ class SOLineItemSerializer(InvenTreeModelSerializer):
     part_detail = PartBriefSerializer(source='part', many=False, read_only=True)
     allocations = SalesOrderAllocationSerializer(many=True, read_only=True)
 
-    # TODO: Once https://github.com/inventree/InvenTree/issues/1687 is fixed, remove default values
-    quantity = serializers.FloatField(default=1)
+    quantity = serializers.FloatField()
 
     allocated = serializers.FloatField(source='allocated_quantity', read_only=True)
     fulfilled = serializers.FloatField(source='fulfilled_quantity', read_only=True)
+    
+    sale_price = InvenTreeMoneySerializer(max_digits=19, decimal_places=4)
+
     sale_price_string = serializers.CharField(source='sale_price', read_only=True)
 
+    sale_price_currency = serializers.ChoiceField(
+        choices=djmoney.settings.CURRENCY_CHOICES,
+        help_text=_('Sale price currency'),
+    )
+
     class Meta:
         model = SalesOrderLineItem
 

InvenTree/order/templates/order/sales_order_detail.html

@@ -377,16 +377,26 @@ function setupCallbacks() {
 
         var pk = $(this).attr('pk');
 
-        launchModalForm(`/order/sales-order/line/${pk}/edit/`, {
-            success: reloadTable,
+        constructForm(`/api/order/so-line/${pk}/`, {
+            fields: {
+                quantity: {},
+                reference: {},
+                sale_price: {},
+                sale_price_currency: {},
+                notes: {},
+            },
+            title: '{% trans "Edit Line Item" %}',
+            onSuccess: reloadTable,
         });
     });
 
     table.find(".button-delete").click(function() {
         var pk = $(this).attr('pk');
 
-        launchModalForm(`/order/sales-order/line/${pk}/delete/`, {
-            success: reloadTable,
+        constructForm(`/api/order/so-line/${pk}/`, {
+            method: 'DELETE',
+            title: '{% trans "Delete Line Item" %}',
+            onSuccess: reloadTable,
         });
     });
 

InvenTree/order/templates/order/so_lineitem_delete.html

@@ -1,6 +0,0 @@
-{% extends "modal_delete_form.html" %}
-{% load i18n %}
-
-{% block pre_form_content %}
-{% trans "Are you sure you wish to delete this line item?" %}
-{% endblock %}

InvenTree/order/urls.py

@@ -57,10 +57,6 @@ sales_order_urls = [
 
     url(r'^line/', include([
         url(r'^new/', views.SOLineItemCreate.as_view(), name='so-line-item-create'),
-        url(r'^(?P<pk>\d+)/', include([
-            url(r'^edit/', views.SOLineItemEdit.as_view(), name='so-line-item-edit'),
-            url(r'^delete/', views.SOLineItemDelete.as_view(), name='so-line-item-delete'),
-        ])),
     ])),
 
     # URLs for sales order allocations

InvenTree/order/views.py

@@ -1197,34 +1197,6 @@ class SOLineItemCreate(AjaxCreateView):
         return ret
 
 
-class SOLineItemEdit(AjaxUpdateView):
-    """ View for editing a SalesOrderLineItem """
-
-    model = SalesOrderLineItem
-    form_class = order_forms.EditSalesOrderLineItemForm
-    ajax_form_title = _('Edit Line Item')
-
-    def get_form(self):
-        form = super().get_form()
-
-        form.fields.pop('order')
-        form.fields.pop('part')
-
-        return form
-
-
-class SOLineItemDelete(AjaxDeleteView):
-
-    model = SalesOrderLineItem
-    ajax_form_title = _("Delete Line Item")
-    ajax_template_name = "order/so_lineitem_delete.html"
-
-    def get_data(self):
-        return {
-            'danger': _('Deleted line item'),
-        }
-
-
 class SalesOrderAssignSerials(AjaxView, FormMixin):
     """
     View for assigning stock items to a sales order,