Enhancement and bug fix in batch (#12753)

* merge shelf like and manufacturing date

* setting default manufacturing date as todays date

* setting default manufacturing date as todays date

* fix

* Improvements to batch auto naming (#12496)

* refactor:
add new function - batch_uses_naming_series
use batch_uses_naming_series in autoname method

* properly update naming series on delete:
- add new functions - get_batch_prefix, get_batch_naming_series_key, get_batch_naming_series
- refactor get_name_from_naming_series
- add after_delete method

* add documentation and rename some functions

* PEP 8 compliance

* test

* added support for jinja template and added validation if expiry date is set or not if item has_expiry_date is set

* bug fix, renamed item_code to item as in batch doctype we refer 'item code' by 'item'

* added manufacturing date wise sort

* added prefix to expiry date and manufacturing date
diff --git a/erpnext/controllers/queries.py b/erpnext/controllers/queries.py
index fd7bdc7..2489469 100644
--- a/erpnext/controllers/queries.py
+++ b/erpnext/controllers/queries.py
@@ -270,13 +270,14 @@
 	}
 
 	if args.get('warehouse'):
-		batch_nos = frappe.db.sql("""select sle.batch_no, round(sum(sle.actual_qty),2), sle.stock_uom, batch.expiry_date
+		batch_nos = frappe.db.sql("""select sle.batch_no, round(sum(sle.actual_qty),2), sle.stock_uom, concat('MFG-',batch.manufacturing_date), concat('EXP-',batch.expiry_date)
 				from `tabStock Ledger Entry` sle
 				    INNER JOIN `tabBatch` batch on sle.batch_no = batch.name
 				where
 					sle.item_code = %(item_code)s
 					and sle.warehouse = %(warehouse)s
-					and sle.batch_no like %(txt)s
+					and (sle.batch_no like %(txt)s
+					or batch.manufacturing_date like %(txt)s)
 					and batch.docstatus < 2
 					{0}
 					{match_conditions}
@@ -287,9 +288,10 @@
 	if batch_nos:
 		return batch_nos
 	else:
-		return frappe.db.sql("""select name, expiry_date from `tabBatch` batch
+		return frappe.db.sql("""select name, concat('MFG-', manufacturing_date), concat('EXP-',expiry_date) from `tabBatch` batch
 			where item = %(item_code)s
-			and name like %(txt)s
+			and (name like %(txt)s
+			or manufacturing_date like %(txt)s)
 			and docstatus < 2
 			{0}
 			{match_conditions}
diff --git a/erpnext/public/js/utils/serial_no_batch_selector.js b/erpnext/public/js/utils/serial_no_batch_selector.js
index a4d7265..0fb8730 100644
--- a/erpnext/public/js/utils/serial_no_batch_selector.js
+++ b/erpnext/public/js/utils/serial_no_batch_selector.js
@@ -215,7 +215,7 @@
 						in_list_view:1,
 						get_query: function() {
 							return {
-							    filters: {item_code: me.item_code },
+							    filters: {item: me.item_code },
 							    query: 'erpnext.controllers.queries.get_batch_numbers'
 					        };
 						},
diff --git a/erpnext/stock/doctype/batch/batch.js b/erpnext/stock/doctype/batch/batch.js
index 12aa0bd..e2ea7f9 100644
--- a/erpnext/stock/doctype/batch/batch.js
+++ b/erpnext/stock/doctype/batch/batch.js
@@ -25,9 +25,17 @@
 		}
 	},
 	item: (frm) => {
-		frappe.db.get_value('Item', {name: frm.doc.item}, 'has_expiry_date', (r) => {
-			frm.toggle_reqd('expiry_date', r.has_expiry_date);
-		});
+		// frappe.db.get_value('Item', {name: frm.doc.item}, 'has_expiry_date', (r) => {
+		// 	frm.toggle_reqd('expiry_date', r.has_expiry_date);
+		// });
+		frappe.db.get_value('Item', {name: frm.doc.item}, ['shelf_life_in_days', 'has_expiry_date'], (r) => {
+			if (r.has_expiry_date && r.shelf_life_in_days) {
+				// Calculate expiry date based on shelf_life_in_days
+				frm.set_value('expiry_date', frappe.datetime.add_days(frm.doc.manufacturing_date, r.shelf_life_in_days));
+			}else if(r.has_expiry_date){
+				frm.toggle_reqd('expiry_date', r.has_expiry_date);
+			}
+		})
 	},
 	make_dashboard: (frm) => {
 		if(!frm.is_new()) {
diff --git a/erpnext/stock/doctype/batch/batch.json b/erpnext/stock/doctype/batch/batch.json
index f60798b..cc1aac5 100644
--- a/erpnext/stock/doctype/batch/batch.json
+++ b/erpnext/stock/doctype/batch/batch.json
@@ -1,493 +1,494 @@
 {
- "allow_copy": 0, 
- "allow_guest_to_view": 0, 
- "allow_import": 1, 
- "allow_rename": 0, 
- "autoname": "", 
- "beta": 0, 
- "creation": "2013-03-05 14:50:38", 
- "custom": 0, 
- "docstatus": 0, 
- "doctype": "DocType", 
- "document_type": "Setup", 
- "editable_grid": 0, 
- "engine": "InnoDB", 
+ "allow_copy": 0,
+ "allow_guest_to_view": 0,
+ "allow_import": 1,
+ "allow_rename": 0,
+ "autoname": "",
+ "beta": 0,
+ "creation": "2013-03-05 14:50:38",
+ "custom": 0,
+ "docstatus": 0,
+ "doctype": "DocType",
+ "document_type": "Setup",
+ "editable_grid": 0,
+ "engine": "InnoDB",
  "fields": [
   {
-   "allow_bulk_edit": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
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-   "depends_on": "eval:doc.__islocal", 
-   "fieldname": "batch_id", 
-   "fieldtype": "Data", 
-   "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": "Batch ID", 
-   "length": 0, 
-   "no_copy": 1, 
-   "oldfieldname": "batch_id", 
-   "oldfieldtype": "Data", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
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-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
+   "allow_bulk_edit": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "depends_on": "eval:doc.__islocal",
+   "fieldname": "batch_id",
+   "fieldtype": "Data",
+   "hidden": 0,
+   "ignore_user_permissions": 0,
+   "ignore_xss_filter": 0,
+   "in_filter": 0,
+   "in_global_search": 0,
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+   "in_standard_filter": 0,
+   "label": "Batch ID",
+   "length": 0,
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+   "oldfieldname": "batch_id",
+   "oldfieldtype": "Data",
+   "permlevel": 0,
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    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
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+   "allow_bulk_edit": 0,
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+   "in_standard_filter": 1,
+   "label": "Item",
+   "length": 0,
+   "no_copy": 0,
+   "oldfieldname": "item",
+   "oldfieldtype": "Link",
+   "options": "Item",
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-  }, 
+  },
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+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "default": "Today",
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-   "ignore_xss_filter": 0, 
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-   "in_standard_filter": 0, 
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-   "no_copy": 0, 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
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-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
+   "allow_bulk_edit": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fieldname": "column_break_9",
+   "fieldtype": "Column Break",
+   "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,
+   "length": 0,
+   "no_copy": 0,
+   "permlevel": 0,
+   "precision": "",
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
+   "read_only": 0,
+   "remember_last_selected_value": 0,
+   "report_hide": 0,
+   "reqd": 0,
+   "search_index": 0,
+   "set_only_once": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "reference_doctype", 
-   "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": "Source Document Type", 
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-   "no_copy": 0, 
-   "options": "DocType", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
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-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
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-   "search_index": 0, 
-   "set_only_once": 0, 
+   "allow_bulk_edit": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fieldname": "reference_doctype",
+   "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": "Source Document Type",
+   "length": 0,
+   "no_copy": 0,
+   "options": "DocType",
+   "permlevel": 0,
+   "precision": "",
+   "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_bulk_edit": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "reference_name", 
-   "fieldtype": "Dynamic 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": "Source Document Name", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "reference_doctype", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
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-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
+   "allow_bulk_edit": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fieldname": "reference_name",
+   "fieldtype": "Dynamic 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": "Source Document Name",
+   "length": 0,
+   "no_copy": 0,
+   "options": "reference_doctype",
+   "permlevel": 0,
+   "precision": "",
+   "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_bulk_edit": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "section_break_7", 
-   "fieldtype": "Section Break", 
-   "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, 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
+   "allow_bulk_edit": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fieldname": "section_break_7",
+   "fieldtype": "Section Break",
+   "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,
+   "length": 0,
+   "no_copy": 0,
+   "permlevel": 0,
+   "precision": "",
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
+   "read_only": 0,
+   "remember_last_selected_value": 0,
+   "report_hide": 0,
+   "reqd": 0,
+   "search_index": 0,
+   "set_only_once": 0,
    "unique": 0
-  }, 
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "description", 
-   "fieldtype": "Small Text", 
-   "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": "Batch Description", 
-   "length": 0, 
-   "no_copy": 0, 
-   "oldfieldname": "description", 
-   "oldfieldtype": "Small Text", 
-   "permlevel": 0, 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0, 
+   "allow_bulk_edit": 0,
+   "allow_on_submit": 0,
+   "bold": 0,
+   "collapsible": 0,
+   "columns": 0,
+   "fieldname": "description",
+   "fieldtype": "Small Text",
+   "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": "Batch Description",
+   "length": 0,
+   "no_copy": 0,
+   "oldfieldname": "description",
+   "oldfieldtype": "Small Text",
+   "permlevel": 0,
+   "print_hide": 0,
+   "print_hide_if_no_value": 0,
+   "read_only": 0,
+   "remember_last_selected_value": 0,
+   "report_hide": 0,
+   "reqd": 0,
+   "search_index": 0,
+   "set_only_once": 0,
+   "unique": 0,
    "width": "300px"
   }
- ], 
- "has_web_view": 0, 
- "hide_heading": 0, 
- "hide_toolbar": 0, 
- "icon": "fa fa-archive", 
- "idx": 1, 
- "image_field": "image", 
- "image_view": 0, 
- "in_create": 0, 
- "is_submittable": 0, 
- "issingle": 0, 
- "istable": 0, 
- "max_attachments": 5, 
- "modified": "2018-01-08 21:55:54.306693", 
- "modified_by": "Administrator", 
- "module": "Stock", 
- "name": "Batch", 
- "owner": "harshada@webnotestech.com", 
+ ],
+ "has_web_view": 0,
+ "hide_heading": 0,
+ "hide_toolbar": 0,
+ "icon": "fa fa-archive",
+ "idx": 1,
+ "image_field": "image",
+ "image_view": 0,
+ "in_create": 0,
+ "is_submittable": 0,
+ "issingle": 0,
+ "istable": 0,
+ "max_attachments": 5,
+ "modified": "2018-01-23 17:41:06.862477",
+ "modified_by": "Administrator",
+ "module": "Stock",
+ "name": "Batch",
+ "owner": "harshada@webnotestech.com",
  "permissions": [
   {
-   "amend": 0, 
-   "apply_user_permissions": 0, 
-   "cancel": 0, 
-   "create": 1, 
-   "delete": 1, 
-   "email": 1, 
-   "export": 0, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "Item Manager", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 0, 
+   "amend": 0,
+   "apply_user_permissions": 0,
+   "cancel": 0,
+   "create": 1,
+   "delete": 1,
+   "email": 1,
+   "export": 0,
+   "if_owner": 0,
+   "import": 0,
+   "permlevel": 0,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "Item Manager",
+   "set_user_permissions": 0,
+   "share": 1,
+   "submit": 0,
    "write": 1
   }
- ], 
- "quick_entry": 1, 
- "read_only": 0, 
- "read_only_onload": 0, 
- "show_name_in_global_search": 0, 
- "sort_order": "DESC", 
- "title_field": "item", 
- "track_changes": 0, 
+ ],
+ "quick_entry": 1,
+ "read_only": 0,
+ "read_only_onload": 0,
+ "show_name_in_global_search": 0,
+ "sort_order": "DESC",
+ "title_field": "item",
+ "track_changes": 0,
  "track_seen": 0
-}
\ No newline at end of file
+}
diff --git a/erpnext/stock/doctype/batch/batch.py b/erpnext/stock/doctype/batch/batch.py
index b5674d3..3b1c031 100644
--- a/erpnext/stock/doctype/batch/batch.py
+++ b/erpnext/stock/doctype/batch/batch.py
@@ -7,24 +7,14 @@
 from frappe.model.document import Document
 from frappe.model.naming import make_autoname, revert_series_if_last
 from frappe.utils import flt, cint
-
+from frappe.utils.jinja import render_template, validate_template
+from frappe.utils.data import add_days
+import json
 
 class UnableToSelectBatchError(frappe.ValidationError):
 	pass
 
 
-def get_name_from_naming_series():
-	"""
-	Get a name generated for a Batch from the Batch's naming series.
-	:return: The string that was generated.
-	"""
-	naming_series_prefix = _get_batch_prefix()
-	key = _make_naming_series_key(naming_series_prefix)
-	name = make_autoname(key)
-
-	return name
-
-
 def get_name_from_hash():
 	"""
 	Get a name for a Batch by generating a unique hash.
@@ -93,13 +83,67 @@
 	return series
 
 
+def batch_uses_naming_series():
+	"""
+	Verify if the Batch is to be named using a naming series
+	:return: bool
+	"""
+	use_naming_series = cint(frappe.db.get_single_value('Stock Settings', 'use_naming_series'))
+	return bool(use_naming_series)
+
+
+def _get_batch_prefix():
+	"""
+	Get the naming series prefix set in Stock Settings.
+
+	It does not do any sanity checks so make sure to use it after checking if the Batch
+	is set to use naming series.
+	:return: The naming series.
+	"""
+	naming_series_prefix = frappe.db.get_single_value('Stock Settings', 'naming_series_prefix')
+	if not naming_series_prefix:
+		naming_series_prefix = 'BATCH-'
+
+	return naming_series_prefix
+
+
+def _make_naming_series_key(prefix):
+	"""
+	Make naming series key for a Batch.
+
+	Naming series key is in the format [prefix].[#####]
+	:param prefix: Naming series prefix gotten from Stock Settings
+	:return: The derived key. If no prefix is given, an empty string is returned
+	"""
+	if not unicode(prefix):
+		return ''
+	else:
+		return prefix.upper() + '.#####'
+
+
+def get_batch_naming_series():
+	"""
+	Get naming series key for a Batch.
+
+	Naming series key is in the format [prefix].[#####]
+	:return: The naming series or empty string if not available
+	"""
+	series = ''
+	if batch_uses_naming_series():
+		prefix = _get_batch_prefix()
+		key = _make_naming_series_key(prefix)
+		series = key
+
+	return series
+
+
 class Batch(Document):
 	def autoname(self):
 		"""Generate random ID for batch if not specified"""
 		if not self.batch_id:
 			if frappe.db.get_value('Item', self.item, 'create_new_batch'):
 				if batch_uses_naming_series():
-					self.batch_id = get_name_from_naming_series()
+					self.batch_id = self.get_name_from_naming_series()
 				else:
 					self.batch_id = get_name_from_hash()
 			else:
@@ -120,6 +164,28 @@
 		if frappe.db.get_value("Item", self.item, "has_batch_no") == 0:
 			frappe.throw(_("The selected item cannot have Batch"))
 
+	def before_save(self):
+		has_expiry_date, shelf_life_in_days = frappe.db.get_value('Item', self.item, ['has_expiry_date', 'shelf_life_in_days'])
+		if not self.expiry_date and has_expiry_date and shelf_life_in_days:
+			self.expiry_date = add_days(self.manufacturing_date, shelf_life_in_days)
+
+		if has_expiry_date and not self.expiry_date:
+			frappe.throw('Expiry date is mandatory for selected item')
+			frappe.msgprint('Set items shelf life in days, to set expiry based on manufacturing_date plus self life ')
+
+	def get_name_from_naming_series(self):
+		"""
+		Get a name generated for a Batch from the Batch's naming series.
+		:return: The string that was generated.
+		"""
+		naming_series_prefix = _get_batch_prefix()
+		# validate_template(naming_series_prefix)
+		naming_series_prefix = render_template(str(naming_series_prefix), self.__dict__)
+		key = _make_naming_series_key(naming_series_prefix)
+		name = make_autoname(key)
+
+		return name
+
 
 @frappe.whitelist()
 def get_batch_qty(batch_no=None, warehouse=None, item_code=None):
@@ -206,6 +272,7 @@
 					frappe.throw(_("Row #{0}: The batch {1} has only {2} qty. Please select another batch which has {3} qty available or split the row into multiple rows, to deliver/issue from multiple batches").format(d.idx, d.batch_no, batch_qty, qty))
 
 
+
 @frappe.whitelist()
 def get_batch_no(item_code, warehouse, qty=1, throw=False):
 	"""
diff --git a/erpnext/stock/doctype/item/item.json b/erpnext/stock/doctype/item/item.json
index 2b87069..8f7e240 100644
--- a/erpnext/stock/doctype/item/item.json
+++ b/erpnext/stock/doctype/item/item.json
@@ -3661,4 +3661,4 @@
  "title_field": "item_name",
  "track_changes": 1,
  "track_seen": 0
-}
\ No newline at end of file
+}