Fixes for 'single pricing' for SupplierPart

InvenTree/company/forms.py

@@ -79,7 +79,7 @@ class EditSupplierPartForm(HelperForm):
 
     single_pricing = MoneyField(
         label=_('Single Price'),
-        default_currency=InvenTreeSetting.get_setting('INVENTREE_DEFAULT_CURRENCY'),
+        default_currency='USD',
         help_text=_('Single quantity price'),
         decimal_places=4,
         max_digits=19,

InvenTree/company/views.py

@@ -306,11 +306,14 @@ class SupplierPartCreate(AjaxCreateView):
         supplier_id = self.get_param('supplier')
         part_id = self.get_param('part')
 
+        supplier = None
+
         if supplier_id:
             try:
-                initials['supplier'] = Company.objects.get(pk=supplier_id)
+                supplier = Company.objects.get(pk=supplier_id)
+                initials['supplier'] = supplier
             except (ValueError, Company.DoesNotExist):
-                pass
+                supplier = None
 
         if manufacturer_id:
             try:
@@ -323,6 +326,17 @@ class SupplierPartCreate(AjaxCreateView):
                 initials['part'] = Part.objects.get(pk=part_id)
             except (ValueError, Part.DoesNotExist):
                 pass
+
+        # Initial value for single pricing
+        if supplier:
+            currency_code = supplier.currency_code
+        else:
+            currency_code = common.settings.currency_code_default()
+
+        currency = CURRENCIES.get(currency_code, None)
+
+        if currency_code:
+            initials['single_pricing'] = ('', currency)
         
         return initials
 

InvenTree/order/models.py

@@ -505,7 +505,7 @@ class PurchaseOrderLineItem(OrderLineItem):
         max_digits=19,
         decimal_places=4,
         default_currency='USD',
-        null=True,
+        null=True, blank=True,
         verbose_name=_('Purchase Price'),
         help_text=_('Unit purchase price'),
     )