[feature] Ability to set UOM as Integer-only and related validations.

utilities/transaction_base.py

@@ -17,7 +17,7 @@
 from __future__ import unicode_literals
 import webnotes
 from webnotes import msgprint, _
-from webnotes.utils import load_json, cstr, flt, now_datetime
+from webnotes.utils import load_json, cstr, flt, now_datetime, cint
 from webnotes.model.doc import addchild
 
 from controllers.status_updater import StatusUpdater
@@ -276,6 +276,9 @@ class TransactionBase(StatusUpdater):
 			
 			webnotes.bean(event_doclist).insert()
 			
+	def validate_uom_is_integer(self, uom_field, qty_fields):
+		validate_uom_is_integer(self.doclist, uom_field, qty_fields)
+			
 	def validate_with_previous_doc(self, source_dt, ref):
 		for key, val in ref.items():
 			is_child = val.get("is_child_table")
@@ -482,3 +485,23 @@ def validate_currency(args, item, meta=None):
 def delete_events(ref_type, ref_name):
 	webnotes.delete_doc("Event", webnotes.conn.sql_list("""select name from `tabEvent` 
 		where ref_type=%s and ref_name=%s""", (ref_type, ref_name)), for_reload=True)
+
+def validate_uom_is_integer(doclist, uom_field, qty_fields):
+	if isinstance(qty_fields, basestring):
+		qty_fields = [qty_fields]
+	
+	integer_uoms = filter(lambda uom: webnotes.conn.get_value("UOM", uom, 
+		"must_be_whole_number") or None, doclist.get_distinct_values(uom_field))
+		
+	if not integer_uoms:
+		return
+
+	for d in doclist:
+		if d.fields.get(uom_field) in integer_uoms:
+			for f in qty_fields:
+				if d.fields.get(f):
+					if cint(d.fields[f])!=d.fields[f]:
+						webnotes.msgprint(_("For UOM") + " '" + d.fields[uom_field] \
+							+ "': " + _("Quantity cannot be a fraction.") \
+							+ " " + _("In Row") + ": " + str(d.idx),
+							raise_exception=True)