[minor] sales invoice to delivery note mapping and prevdoc validation

accounts/doctype/sales_invoice/sales_invoice.js

@@ -60,7 +60,7 @@ erpnext.accounts.SalesInvoiceController = erpnext.selling.SellingController.exte
 
 			cur_frm.add_custom_button('Send SMS', cur_frm.cscript.send_sms);
 
-			if(doc.is_pos==1 && doc.update_stock!=1)
+			if(cint(doc.update_stock)!=1)
 				cur_frm.add_custom_button('Make Delivery', cur_frm.cscript['Make Delivery Note']);
 
 			if(doc.outstanding_amount!=0)

accounts/doctype/sales_invoice/sales_invoice.py

@@ -983,3 +983,49 @@ def get_income_account(doctype, txt, searchfield, start, page_len, filters):
 				and tabAccount.%(key)s LIKE '%(txt)s'
 				%(mcond)s""" % {'company': filters['company'], 'key': searchfield, 
 			'txt': "%%%s%%" % txt, 'mcond':get_match_cond(doctype, searchfield)})
+
+
+@webnotes.whitelist()
+def make_delivery_note(source_name, target_doclist=None):
+	from webnotes.model.mapper import get_mapped_doclist
+	
+	def set_missing_values(source, target):
+		bean = webnotes.bean(target)
+		bean.run_method("onload_post_render")
+		
+	def update_item(obj, target, source_parent):
+		target.amount = (flt(obj.qty) - flt(obj.delivered_qty)) * flt(obj.basic_rate)
+		target.export_amount = (flt(obj.qty) - flt(obj.delivered_qty)) * flt(obj.export_rate)
+		target.qty = flt(obj.qty) - flt(obj.delivered_qty)
+	
+	doclist = get_mapped_doclist("Sales Invoice", source_name, 	{
+		"Sales Invoice": {
+			"doctype": "Delivery Note", 
+			"validation": {
+				"docstatus": ["=", 1]
+			}
+		}, 
+		"Sales Invoice Item": {
+			"doctype": "Delivery Note Item", 
+			"field_map": {
+				"name": "prevdoc_detail_docname", 
+				"parent": "prevdoc_docname", 
+				"parenttype": "prevdoc_doctype",
+				"serial_no": "serial_no"
+			},
+			"postprocess": update_item
+		}, 
+		"Sales Taxes and Charges": {
+			"doctype": "Sales Taxes and Charges", 
+			"add_if_empty": True
+		}, 
+		"Sales Team": {
+			"doctype": "Sales Team", 
+			"field_map": {
+				"incentives": "incentives"
+			},
+			"add_if_empty": True
+		}
+	}, target_doclist, set_missing_values)
+	
+	return [d.fields for d in doclist]