[Feature] Advance Account Balance in Employee Advance (#13263)

* added due advance amount field to show due amount

* fixes codacy

* made whitelisted method

* Update employee_advance.js
diff --git a/erpnext/hr/doctype/employee_advance/employee_advance.js b/erpnext/hr/doctype/employee_advance/employee_advance.js
index b6dd7ee..a9407be 100644
--- a/erpnext/hr/doctype/employee_advance/employee_advance.js
+++ b/erpnext/hr/doctype/employee_advance/employee_advance.js
@@ -81,5 +81,18 @@
 				frappe.set_route("Form", doclist[0].doctype, doclist[0].name);
 			}
 		});
+	},
+
+	employee: function (frm) {
+		return frappe.call({
+			method: "erpnext.hr.doctype.employee_advance.employee_advance.get_due_advance_amount",
+			args: {
+				"employee": frm.doc.employee,
+				"posting_date": frm.doc.posting_date
+			},
+			callback: function(r) {
+				frm.set_value("due_advance_amount",r.message);
+			}
+		});
 	}
 });
diff --git a/erpnext/hr/doctype/employee_advance/employee_advance.json b/erpnext/hr/doctype/employee_advance/employee_advance.json
index 79e49b0..a919d73 100644
--- a/erpnext/hr/doctype/employee_advance/employee_advance.json
+++ b/erpnext/hr/doctype/employee_advance/employee_advance.json
@@ -42,6 +42,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -73,6 +74,7 @@
    "reqd": 1, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -104,6 +106,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -133,6 +136,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -165,6 +169,7 @@
    "reqd": 1, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -194,6 +199,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -224,6 +230,7 @@
    "reqd": 1, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -253,6 +260,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -284,6 +292,7 @@
    "reqd": 1, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -315,6 +324,40 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "depends_on": "eval:cur_frm.doc.employee", 
+   "fieldname": "due_advance_amount", 
+   "fieldtype": "Currency", 
+   "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": "Due Advance Amount", 
+   "length": 0, 
+   "no_copy": 0, 
+   "options": "Company:company:default_currency", 
+   "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, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -346,6 +389,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -375,6 +419,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -406,6 +451,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -437,6 +483,7 @@
    "reqd": 1, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -467,6 +514,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -496,6 +544,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -527,6 +576,7 @@
    "reqd": 1, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }, 
   {
@@ -558,6 +608,7 @@
    "reqd": 0, 
    "search_index": 0, 
    "set_only_once": 0, 
+   "translatable": 0, 
    "unique": 0
   }
  ], 
@@ -571,8 +622,8 @@
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2017-12-14 17:53:11.084810", 
- "modified_by": "nabinhait@gmail.com", 
+ "modified": "2018-03-10 17:09:35.969874", 
+ "modified_by": "Administrator", 
  "module": "HR", 
  "name": "Employee Advance", 
  "name_case": "", 
diff --git a/erpnext/hr/doctype/employee_advance/employee_advance.py b/erpnext/hr/doctype/employee_advance/employee_advance.py
index 28547fb..50be56d 100644
--- a/erpnext/hr/doctype/employee_advance/employee_advance.py
+++ b/erpnext/hr/doctype/employee_advance/employee_advance.py
@@ -53,6 +53,7 @@
 		self.set_status()
 		frappe.db.set_value("Employee Advance", self.name , "status", self.status)
 
+
 	def update_claimed_amount(self):
 		claimed_amount = frappe.db.sql("""
 			select sum(ifnull(allocated_amount, 0))
@@ -60,7 +61,14 @@
 			where employee_advance = %s and docstatus=1 and allocated_amount > 0
 		""", self.name)[0][0]
 
-		frappe.db.set_value("Employee Advance", self.name, "claimed_amount", claimed_amount)
+		frappe.db.set_value("Employee Advance", self.name, "claimed_ amount", claimed_amount)
+
+@frappe.whitelist()
+def get_due_advance_amount(employee, posting_date):
+	employee_due_amount = frappe.get_all("Employee Advance", \
+		filters = {"employee":employee, "docstatus":1, "posting_date":("<=", posting_date)}, \
+		fields = ["advance_amount", "paid_amount"])
+	return sum([(emp.advance_amount - emp.paid_amount) for emp in employee_due_amount])
 
 @frappe.whitelist()
 def make_bank_entry(dt, dn):