feat: [stock -> packed_items] Enable modification of Description on packed items (#18907)

* Change packed item

* Remove description field on update_packed_items

* add possibility to modify description on packed items
diff --git a/erpnext/stock/doctype/packed_item/packed_item.json b/erpnext/stock/doctype/packed_item/packed_item.json
index 6c8b2b1..b089e75 100644
--- a/erpnext/stock/doctype/packed_item/packed_item.json
+++ b/erpnext/stock/doctype/packed_item/packed_item.json
@@ -1,685 +1,203 @@
 {
- "allow_copy": 0, 
- "allow_import": 0, 
- "allow_rename": 0, 
- "beta": 0, 
- "creation": "2013-02-22 01:28:00", 
- "custom": 0, 
- "docstatus": 0, 
- "doctype": "DocType", 
- "editable_grid": 1, 
- "engine": "InnoDB", 
+ "creation": "2013-02-22 01:28:00",
+ "doctype": "DocType",
+ "editable_grid": 1,
+ "engine": "InnoDB",
+ "field_order": [
+  "parent_item",
+  "item_code",
+  "item_name",
+  "column_break_5",
+  "description",
+  "section_break_6",
+  "warehouse",
+  "target_warehouse",
+  "column_break_9",
+  "qty",
+  "section_break_9",
+  "serial_no",
+  "column_break_11",
+  "batch_no",
+  "section_break_13",
+  "actual_qty",
+  "projected_qty",
+  "column_break_16",
+  "uom",
+  "page_break",
+  "prevdoc_doctype",
+  "parent_detail_docname"
+ ],
  "fields": [
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "parent_item", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Parent Item", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "parent_item", 
-   "oldfieldtype": "Link", 
-   "options": "Item", 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "parent_item",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "label": "Parent Item",
+   "oldfieldname": "parent_item",
+   "oldfieldtype": "Link",
+   "options": "Item",
+   "read_only": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "item_code", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
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-   "in_filter": 0, 
-   "in_global_search": 1, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Item Code", 
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-   "oldfieldname": "item_code", 
-   "oldfieldtype": "Link", 
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-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "item_code",
+   "fieldtype": "Link",
+   "in_global_search": 1,
+   "in_list_view": 1,
+   "label": "Item Code",
+   "oldfieldname": "item_code",
+   "oldfieldtype": "Link",
+   "options": "Item",
+   "read_only": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "item_name", 
-   "fieldtype": "Data", 
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-   "in_global_search": 0, 
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-   "in_standard_filter": 0, 
-   "label": "Item Name", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "item_name", 
-   "oldfieldtype": "Data", 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "item_name",
+   "fieldtype": "Data",
+   "label": "Item Name",
+   "oldfieldname": "item_name",
+   "oldfieldtype": "Data",
+   "read_only": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
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-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
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-  }, 
+   "fieldname": "column_break_5",
+   "fieldtype": "Column Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "description", 
-   "fieldtype": "Text Editor", 
-   "hidden": 0, 
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-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
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-   "in_standard_filter": 0, 
-   "label": "Description", 
-   "length": 0, 
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-   "oldfieldname": "description", 
-   "oldfieldtype": "Text", 
-   "permlevel": 0, 
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-   "print_hide_if_no_value": 0, 
-   "print_width": "300px", 
-   "read_only": 1, 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "fieldname": "description",
+   "fieldtype": "Text Editor",
+   "in_list_view": 1,
+   "label": "Description",
+   "oldfieldname": "description",
+   "oldfieldtype": "Text",
+   "print_width": "300px",
    "width": "300px"
-  }, 
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
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-   "fieldname": "section_break_6", 
-   "fieldtype": "Section Break", 
-   "hidden": 0, 
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-   "reqd": 0, 
-   "search_index": 0, 
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-  }, 
+   "fieldname": "section_break_6",
+   "fieldtype": "Section Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "warehouse", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "From Warehouse", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "warehouse", 
-   "oldfieldtype": "Link", 
-   "options": "Warehouse", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
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-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "warehouse",
+   "fieldtype": "Link",
+   "label": "From Warehouse",
+   "oldfieldname": "warehouse",
+   "oldfieldtype": "Link",
+   "options": "Warehouse"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "target_warehouse", 
-   "fieldtype": "Link", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "To Warehouse (Optional)", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Warehouse", 
-   "permlevel": 0, 
-   "precision": "", 
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-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "target_warehouse",
+   "fieldtype": "Link",
+   "label": "To Warehouse (Optional)",
+   "options": "Warehouse",
+   "print_hide": 1
+  },
   {
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-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "column_break_9", 
-   "fieldtype": "Column Break", 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "column_break_9",
+   "fieldtype": "Column Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "qty", 
-   "fieldtype": "Float", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 1, 
-   "in_standard_filter": 0, 
-   "label": "Qty", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "qty", 
-   "oldfieldtype": "Currency", 
-   "permlevel": 0, 
-   "print_hide": 0, 
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-   "read_only": 1, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "qty",
+   "fieldtype": "Float",
+   "in_list_view": 1,
+   "label": "Qty",
+   "oldfieldname": "qty",
+   "oldfieldtype": "Currency",
+   "read_only": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "section_break_9", 
-   "fieldtype": "Section Break", 
-   "hidden": 0, 
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-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "section_break_9",
+   "fieldtype": "Section Break"
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "serial_no", 
-   "fieldtype": "Text", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
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-   "label": "Serial No", 
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-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "serial_no",
+   "fieldtype": "Text",
+   "label": "Serial No"
+  },
   {
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-   "search_index": 0, 
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-   "unique": 0
-  }, 
+   "fieldname": "column_break_11",
+   "fieldtype": "Column Break"
+  },
   {
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-   "bold": 0, 
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-   "columns": 0, 
-   "fieldname": "batch_no", 
-   "fieldtype": "Link", 
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-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "batch_no",
+   "fieldtype": "Link",
+   "label": "Batch No",
+   "options": "Batch"
+  },
   {
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-  }, 
+   "fieldname": "section_break_13",
+   "fieldtype": "Section Break"
+  },
   {
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-   "fieldname": "actual_qty", 
-   "fieldtype": "Float", 
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-   "in_global_search": 0, 
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-   "search_index": 0, 
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-  }, 
+   "allow_on_submit": 1,
+   "fieldname": "actual_qty",
+   "fieldtype": "Float",
+   "label": "Actual Qty",
+   "no_copy": 1,
+   "oldfieldname": "actual_qty",
+   "oldfieldtype": "Currency",
+   "read_only": 1
+  },
   {
-   "allow_on_submit": 1, 
-   "bold": 0, 
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-   "fieldtype": "Float", 
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-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "allow_on_submit": 1,
+   "fieldname": "projected_qty",
+   "fieldtype": "Float",
+   "label": "Projected Qty",
+   "no_copy": 1,
+   "oldfieldname": "projected_qty",
+   "oldfieldtype": "Currency",
+   "read_only": 1
+  },
   {
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-  }, 
+   "fieldname": "column_break_16",
+   "fieldtype": "Column Break"
+  },
   {
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-  }, 
+   "fieldname": "uom",
+   "fieldtype": "Link",
+   "label": "UOM",
+   "oldfieldname": "uom",
+   "oldfieldtype": "Link",
+   "options": "UOM",
+   "read_only": 1
+  },
   {
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-   "label": "Page Break", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "page_break", 
-   "oldfieldtype": "Check", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 1, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "allow_on_submit": 1,
+   "default": "0",
+   "fieldname": "page_break",
+   "fieldtype": "Check",
+   "label": "Page Break",
+   "oldfieldname": "page_break",
+   "oldfieldtype": "Check",
+   "read_only": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "prevdoc_doctype", 
-   "fieldtype": "Data", 
-   "hidden": 1, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Prevdoc DocType", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "prevdoc_doctype", 
-   "oldfieldtype": "Data", 
-   "permlevel": 0, 
-   "print_hide": 1, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 1, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "prevdoc_doctype",
+   "fieldtype": "Data",
+   "hidden": 1,
+   "label": "Prevdoc DocType",
+   "oldfieldname": "prevdoc_doctype",
+   "oldfieldtype": "Data",
+   "print_hide": 1,
+   "read_only": 1
+  },
   {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "parent_detail_docname", 
-   "fieldtype": "Data", 
-   "hidden": 1, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_global_search": 0, 
-   "in_list_view": 0, 
-   "in_standard_filter": 0, 
-   "label": "Parent Detail docname", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "parent_detail_docname", 
-   "oldfieldtype": "Data", 
-   "permlevel": 0, 
-   "print_hide": 1, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 1, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
+   "fieldname": "parent_detail_docname",
+   "fieldtype": "Data",
+   "hidden": 1,
+   "label": "Parent Detail docname",
+   "no_copy": 1,
+   "oldfieldname": "parent_detail_docname",
+   "oldfieldtype": "Data",
+   "print_hide": 1,
+   "read_only": 1
   }
- ], 
- "hide_heading": 0, 
- "hide_toolbar": 0, 
- "idx": 1, 
- "image_view": 0, 
- "in_create": 0, 
-
- "is_submittable": 0, 
- "issingle": 0, 
- "istable": 1, 
- "max_attachments": 0, 
- "modified": "2017-02-20 13:27:37.569945", 
- "modified_by": "Administrator", 
- "module": "Stock", 
- "name": "Packed Item", 
- "owner": "Administrator", 
- "permissions": [], 
- "quick_entry": 0, 
- "read_only": 0, 
- "read_only_onload": 0, 
- "show_name_in_global_search": 0, 
- "track_changes": 1, 
- "track_seen": 0
-}
\ No newline at end of file
+ ],
+ "idx": 1,
+ "istable": 1,
+ "modified": "2019-08-27 18:17:37.167512",
+ "modified_by": "Administrator",
+ "module": "Stock",
+ "name": "Packed Item",
+ "owner": "Administrator",
+ "permissions": [],
+ "track_changes": 1
+}
diff --git a/erpnext/stock/doctype/packed_item/packed_item.py b/erpnext/stock/doctype/packed_item/packed_item.py
index cf72527..2fd6516 100644
--- a/erpnext/stock/doctype/packed_item/packed_item.py
+++ b/erpnext/stock/doctype/packed_item/packed_item.py
@@ -30,14 +30,14 @@
 		where item_code = %s and warehouse = %s""", (item, warehouse), as_dict = 1)
 	return det and det[0] or frappe._dict()
 
-def update_packing_list_item(doc, packing_item_code, qty, main_item_row, description):
+def update_packing_list_item(doc, packing_item_code, qty, main_item_row, description):	
 	item = get_packing_item_details(packing_item_code, doc.company)
 
 	# check if exists
 	exists = 0
 	for d in doc.get("packed_items"):
 		if d.parent_item == main_item_row.item_code and d.item_code == packing_item_code and\
-				d.parent_detail_docname == main_item_row.name and d.description == description:
+				d.parent_detail_docname == main_item_row.name:
 			pi, exists = d, 1
 			break
 
@@ -48,10 +48,10 @@
 	pi.item_code = packing_item_code
 	pi.item_name = item.item_name
 	pi.parent_detail_docname = main_item_row.name
-	pi.description = item.description
 	pi.uom = item.stock_uom
 	pi.qty = flt(qty)
-	pi.description = description
+	if description and not pi.description:
+		pi.description = description
 	if not pi.warehouse:
 		pi.warehouse = (main_item_row.warehouse if ((doc.get('is_pos')
 			or not item.default_warehouse) and main_item_row.warehouse) else item.default_warehouse)
@@ -112,4 +112,4 @@
 	return items
 	
 def on_doctype_update():
-	frappe.db.add_index("Packed Item", ["item_code", "warehouse"])
\ No newline at end of file
+	frappe.db.add_index("Packed Item", ["item_code", "warehouse"])