form overrides

InvenTree/common/views.py

@@ -191,10 +191,27 @@ class FileManagementFormView(MultiStepFormView):
 
     def __init__(self, *args, **kwargs):
         """ initialize the FormView """
-        # perform all checks and inits from MultiStepFormView
+        # check if form_list should be overriden
+        if hasattr(self, 'form_list_override'):
+            # check for list
+            if not isinstance(self.form_list_override, list):
+                raise ValueError('form_list_override must be a list')
+
+            # loop through and override /add form_list enrties
+            for entry in self.form_list_override:
+                # fetch postition
+                pos = [self.form_list.index(i) for i in self.form_list if i[0] == 'items']
+                # replace if exists
+                if pos:
+                    self.form_list[pos[0]] = entry
+                # or append
+                else:
+                    self.form_list.append(entry)
+
+        # perform all checks and inits for MultiStepFormView
         super().__init__(*args, **kwargs)
 
-        # Check 
+        # Check for file manager class
         if not(hasattr(self, 'file_manager_class') and issubclass(self.file_manager_class, FileManager)):
             raise NotImplementedError('A subclass of a file manager class needs to be set!')
 

InvenTree/order/views.py

@@ -32,6 +32,7 @@ from part.models import Part
 from common.models import InvenTreeSetting
 from common.views import FileManagementFormView
 from common.files import FileManager
+from common import forms as cm_forms
 
 from . import forms as order_forms
 from part.views import PartPricing
@@ -573,7 +574,16 @@ class SalesOrderShip(AjaxUpdateView):
 class PurchaseOrderUpload(FileManagementFormView):
     ''' PurchaseOrder: Upload file, match to fields and parts (using multi-Step form) '''
 
+    class MyMatch(cm_forms.MatchItem):
+        """ override MatchItem fields """
+        def get_special_field(self, col_guess, row, file_manager):
+            """ set special field """
+            # run default
+            super().get_special_field(col_guess, row, file_manager)
     name = 'order'
+    form_list_override = [
+        ('items', MyMatch),
+    ]
     form_steps_template = [
         'order/order_wizard/po_upload.html',
         'order/order_wizard/match_fields.html',
@@ -584,7 +594,6 @@ class PurchaseOrderUpload(FileManagementFormView):
         _("Match Fields"),
         _("Match Supplier Parts"),
     ]
-    # Form field name: PurchaseOrderLineItem field
     form_field_map = {
         'item_select': 'part',
         'quantity': 'quantity',