refactor: Shift Request
diff --git a/erpnext/hr/doctype/department/department.json b/erpnext/hr/doctype/department/department.json
index a54c1d1..dcb6a74 100644
--- a/erpnext/hr/doctype/department/department.json
+++ b/erpnext/hr/doctype/department/department.json
@@ -17,10 +17,10 @@
   "payroll_cost_center",
   "column_break_9",
   "leave_block_list",
-  "leave_section",
+  "approvers",
   "leave_approvers",
-  "expense_section",
   "expense_approvers",
+  "shift_request_approver",
   "lft",
   "rgt",
   "old_parent"
@@ -33,14 +33,18 @@
    "label": "Department",
    "oldfieldname": "department_name",
    "oldfieldtype": "Data",
-   "reqd": 1
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "parent_department",
    "fieldtype": "Link",
    "in_list_view": 1,
    "label": "Parent Department",
-   "options": "Department"
+   "options": "Department",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "company",
@@ -48,7 +52,9 @@
    "in_standard_filter": 1,
    "label": "Company",
    "options": "Company",
-   "reqd": 1
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "bold": 1,
@@ -56,17 +62,23 @@
    "fieldname": "is_group",
    "fieldtype": "Check",
    "in_list_view": 1,
-   "label": "Is Group"
+   "label": "Is Group",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "default": "0",
    "fieldname": "disabled",
    "fieldtype": "Check",
-   "label": "Disabled"
+   "label": "Disabled",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "section_break_4",
-   "fieldtype": "Section Break"
+   "fieldtype": "Section Break",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "description": "Days for which Holidays are blocked for this department.",
@@ -74,31 +86,25 @@
    "fieldtype": "Link",
    "in_list_view": 1,
    "label": "Leave Block List",
-   "options": "Leave Block List"
+   "options": "Leave Block List",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
-   "fieldname": "leave_section",
-   "fieldtype": "Section Break",
-   "label": "Leave Approvers"
-  },
-  {
-   "description": "The first Leave Approver in the list will be set as the default Leave Approver.",
    "fieldname": "leave_approvers",
    "fieldtype": "Table",
    "label": "Leave Approver",
-   "options": "Department Approver"
+   "options": "Department Approver",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
-   "fieldname": "expense_section",
-   "fieldtype": "Section Break",
-   "label": "Expense Approvers"
-  },
-  {
-   "description": "The first Expense Approver in the list will be set as the default Expense Approver.",
    "fieldname": "expense_approvers",
    "fieldtype": "Table",
    "label": "Expense Approver",
-   "options": "Department Approver"
+   "options": "Department Approver",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "lft",
@@ -106,7 +112,9 @@
    "hidden": 1,
    "label": "lft",
    "print_hide": 1,
-   "read_only": 1
+   "read_only": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "rgt",
@@ -114,7 +122,9 @@
    "hidden": 1,
    "label": "rgt",
    "print_hide": 1,
-   "read_only": 1
+   "read_only": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "old_parent",
@@ -122,28 +132,52 @@
    "hidden": 1,
    "ignore_user_permissions": 1,
    "label": "Old Parent",
-   "print_hide": 1
+   "print_hide": 1,
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "column_break_3",
-   "fieldtype": "Column Break"
+   "fieldtype": "Column Break",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "payroll_cost_center",
    "fieldtype": "Link",
    "label": "Payroll Cost Center",
-   "options": "Cost Center"
+   "options": "Cost Center",
+   "show_days": 1,
+   "show_seconds": 1
   },
   {
    "fieldname": "column_break_9",
-   "fieldtype": "Column Break"
+   "fieldtype": "Column Break",
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "description": "The first Approver in the list will be set as the default Approver.",
+   "fieldname": "approvers",
+   "fieldtype": "Section Break",
+   "label": "Approvers",
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "fieldname": "shift_request_approver",
+   "fieldtype": "Table",
+   "label": "Shift Request Approver",
+   "options": "Department Approver",
+   "show_days": 1,
+   "show_seconds": 1
   }
  ],
  "icon": "fa fa-sitemap",
  "idx": 1,
  "is_tree": 1,
  "links": [],
- "modified": "2020-05-05 18:49:28.503931",
+ "modified": "2020-06-23 15:42:00.563272",
  "modified_by": "Administrator",
  "module": "HR",
  "name": "Department",
diff --git a/erpnext/hr/doctype/department_approver/department_approver.py b/erpnext/hr/doctype/department_approver/department_approver.py
index afd54b8..7bd8fd4 100644
--- a/erpnext/hr/doctype/department_approver/department_approver.py
+++ b/erpnext/hr/doctype/department_approver/department_approver.py
@@ -15,7 +15,7 @@
 def get_approvers(doctype, txt, searchfield, start, page_len, filters):
 
 	if not filters.get("employee"):
-		frappe.throw(_("Please select Employee Record first."))
+		frappe.throw(_("Please select Employee first."))
 
 	approvers = []
 	department_details = {}
@@ -41,9 +41,12 @@
 	if filters.get("doctype") == "Leave Application":
 		parentfield = "leave_approvers"
 		field_name = "Leave Approver"
-	else:
+	elif filters.get("doctype") == "Leave Application":
 		parentfield = "expense_approvers"
 		field_name = "Expense Approver"
+	else:
+		parentfield = "shift_request_approver"
+		field_name = "Approver"
 	if department_list:
 		for d in department_list:
 			approvers += frappe.db.sql("""select user.name, user.first_name, user.last_name from
diff --git a/erpnext/hr/doctype/shift_request/shift_request.js b/erpnext/hr/doctype/shift_request/shift_request.js
index 1db7c7d..b17a6f3 100644
--- a/erpnext/hr/doctype/shift_request/shift_request.js
+++ b/erpnext/hr/doctype/shift_request/shift_request.js
@@ -2,7 +2,16 @@
 // For license information, please see license.txt
 
 frappe.ui.form.on('Shift Request', {
-	refresh: function(frm) {
-
-	}
+	setup: function(frm) {
+		frm.set_query("approver", function() {
+			return {
+				query: "erpnext.hr.doctype.department_approver.department_approver.get_approvers",
+				filters: {
+					employee: frm.doc.employee,
+					doctype: frm.doc.doctype
+				}
+			};
+		});
+		frm.set_query("employee", erpnext.queries.employee);
+	},
 });
diff --git a/erpnext/hr/doctype/shift_request/shift_request.json b/erpnext/hr/doctype/shift_request/shift_request.json
index dd05647..fee55dd 100644
--- a/erpnext/hr/doctype/shift_request/shift_request.json
+++ b/erpnext/hr/doctype/shift_request/shift_request.json
@@ -1,396 +1,175 @@
 {
- "allow_copy": 0, 
- "allow_guest_to_view": 0, 
- "allow_import": 1, 
- "allow_rename": 0, 
- "autoname": "HR-SHR-.YY.-.MM.-.#####", 
- "beta": 0, 
- "creation": "2018-04-13 16:32:27.974273", 
- "custom": 0, 
- "docstatus": 0, 
- "doctype": "DocType", 
- "document_type": "", 
- "editable_grid": 1, 
- "engine": "InnoDB", 
+ "actions": [],
+ "allow_import": 1,
+ "autoname": "HR-SHR-.YY.-.MM.-.#####",
+ "creation": "2018-04-13 16:32:27.974273",
+ "doctype": "DocType",
+ "editable_grid": 1,
+ "engine": "InnoDB",
+ "field_order": [
+  "shift_type",
+  "employee",
+  "employee_name",
+  "department",
+  "status",
+  "column_break_4",
+  "company",
+  "approver",
+  "from_date",
+  "to_date",
+  "amended_from"
+ ],
  "fields": [
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "shift_type", 
-   "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": "Shift Type", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Shift Type", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "shift_type",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "label": "Shift Type",
+   "options": "Shift Type",
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "employee", 
-   "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": "Employee", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Employee", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "employee",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "label": "Employee",
+   "options": "Employee",
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fetch_from": "employee.employee_name", 
-   "fieldname": "employee_name", 
-   "fieldtype": "Data", 
-   "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": "Employee Name", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "", 
-   "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
-  }, 
+   "fetch_from": "employee.employee_name",
+   "fieldname": "employee_name",
+   "fieldtype": "Data",
+   "label": "Employee Name",
+   "read_only": 1,
+   "show_days": 1,
+   "show_seconds": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fetch_from": "employee.department", 
-   "fieldname": "department", 
-   "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": "Department", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Department", 
-   "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
-  }, 
+   "fetch_from": "employee.department",
+   "fieldname": "department",
+   "fieldtype": "Link",
+   "label": "Department",
+   "options": "Department",
+   "read_only": 1,
+   "show_days": 1,
+   "show_seconds": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "column_break_4", 
-   "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, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "column_break_4",
+   "fieldtype": "Column Break",
+   "show_days": 1,
+   "show_seconds": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "company", 
-   "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": "Company", 
-   "length": 0, 
-   "no_copy": 0, 
-   "options": "Company", 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "remember_last_selected_value": 0, 
-   "report_hide": 0, 
-   "reqd": 1, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "company",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "label": "Company",
+   "options": "Company",
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "from_date", 
-   "fieldtype": "Date", 
-   "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 Date", 
-   "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, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "from_date",
+   "fieldtype": "Date",
+   "label": "From Date",
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "to_date", 
-   "fieldtype": "Date", 
-   "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 Date", 
-   "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, 
-   "translatable": 0, 
-   "unique": 0
-  }, 
+   "fieldname": "to_date",
+   "fieldtype": "Date",
+   "label": "To Date",
+   "show_days": 1,
+   "show_seconds": 1
+  },
   {
-   "allow_bulk_edit": 0, 
-   "allow_in_quick_entry": 0, 
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
-   "fieldname": "amended_from", 
-   "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": "Amended From", 
-   "length": 0, 
-   "no_copy": 1, 
-   "options": "Shift Request", 
-   "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, 
-   "translatable": 0, 
-   "unique": 0
+   "fieldname": "amended_from",
+   "fieldtype": "Link",
+   "label": "Amended From",
+   "no_copy": 1,
+   "options": "Shift Request",
+   "print_hide": 1,
+   "read_only": 1,
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "default": "Draft",
+   "fieldname": "status",
+   "fieldtype": "Select",
+   "label": "Status",
+   "options": "Draft\nApproved\nRejected",
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
+  },
+  {
+   "fieldname": "approver",
+   "fieldtype": "Link",
+   "label": "Approver",
+   "options": "User",
+   "reqd": 1,
+   "show_days": 1,
+   "show_seconds": 1
   }
- ], 
- "has_web_view": 0, 
- "hide_heading": 0, 
- "hide_toolbar": 0, 
- "idx": 0, 
- "image_view": 0, 
- "in_create": 0, 
- "is_submittable": 1, 
- "issingle": 0, 
- "istable": 0, 
- "max_attachments": 0, 
- "modified": "2018-08-21 16:15:36.577448", 
- "modified_by": "Administrator", 
- "module": "HR", 
- "name": "Shift Request", 
- "name_case": "", 
- "owner": "Administrator", 
+ ],
+ "is_submittable": 1,
+ "links": [],
+ "modified": "2020-06-23 15:56:44.536207",
+ "modified_by": "Administrator",
+ "module": "HR",
+ "name": "Shift Request",
+ "owner": "Administrator",
  "permissions": [
   {
-   "amend": 0, 
-   "cancel": 0, 
-   "create": 1, 
-   "delete": 0, 
-   "email": 1, 
-   "export": 1, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "Employee", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 1, 
+   "create": 1,
+   "email": 1,
+   "export": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "Employee",
+   "share": 1,
    "write": 1
-  }, 
+  },
   {
-   "amend": 1, 
-   "cancel": 1, 
-   "create": 1, 
-   "delete": 1, 
-   "email": 1, 
-   "export": 1, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "HR Manager", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 1, 
+   "amend": 1,
+   "cancel": 1,
+   "create": 1,
+   "delete": 1,
+   "email": 1,
+   "export": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "HR Manager",
+   "share": 1,
+   "submit": 1,
    "write": 1
-  }, 
+  },
   {
-   "amend": 0, 
-   "cancel": 0, 
-   "create": 1, 
-   "delete": 0, 
-   "email": 1, 
-   "export": 1, 
-   "if_owner": 0, 
-   "import": 0, 
-   "permlevel": 0, 
-   "print": 1, 
-   "read": 1, 
-   "report": 1, 
-   "role": "HR User", 
-   "set_user_permissions": 0, 
-   "share": 1, 
-   "submit": 1, 
+   "create": 1,
+   "email": 1,
+   "export": 1,
+   "print": 1,
+   "read": 1,
+   "report": 1,
+   "role": "HR User",
+   "share": 1,
+   "submit": 1,
    "write": 1
   }
- ], 
- "quick_entry": 0, 
- "read_only": 0, 
- "read_only_onload": 0, 
- "show_name_in_global_search": 0, 
- "sort_field": "modified", 
- "sort_order": "DESC", 
- "title_field": "employee_name", 
- "track_changes": 1, 
- "track_seen": 0, 
- "track_views": 0
+ ],
+ "sort_field": "modified",
+ "sort_order": "DESC",
+ "title_field": "employee_name",
+ "track_changes": 1
 }
\ No newline at end of file
diff --git a/erpnext/hr/doctype/shift_request/shift_request.py b/erpnext/hr/doctype/shift_request/shift_request.py
index ff5de08..f39bdb8 100644
--- a/erpnext/hr/doctype/shift_request/shift_request.py
+++ b/erpnext/hr/doctype/shift_request/shift_request.py
@@ -7,6 +7,7 @@
 from frappe import _
 from frappe.model.document import Document
 from frappe.utils import formatdate, getdate
+from erpnext.hr.doctype.department_approver.department_approver import get_approvers
 
 class OverlapError(frappe.ValidationError): pass
 
@@ -14,15 +15,19 @@
 	def validate(self):
 		self.validate_dates()
 		self.validate_shift_request_overlap_dates()
+		self.validate_approver()
 
 	def on_submit(self):
-		date_list = self.get_working_days(self.from_date, self.to_date)
-		for date in date_list:
+		if self.status not in ["Approved", "Rejected"]:
+			frappe.throw(_("Only Shift Request with status 'Approved' and 'Rejected' can be submitted"))
+		if self.status == "Approved":
 			assignment_doc = frappe.new_doc("Shift Assignment")
 			assignment_doc.company = self.company
 			assignment_doc.shift_type = self.shift_type
 			assignment_doc.employee = self.employee
-			assignment_doc.date = date
+			assignment_doc.start_date = self.from_date
+			if self.to_date:
+				assignment_doc.end_date = self.to_date
 			assignment_doc.shift_request = self.name
 			assignment_doc.insert()
 			assignment_doc.submit()
@@ -34,6 +39,13 @@
 				shift_assignment_doc = frappe.get_doc("Shift Assignment", shift['name'])
 				shift_assignment_doc.cancel()
 
+	def validate_approver(self):
+		department = frappe.get_value("Employee", self.employee, "department")
+		# shift_approver = frappe.get_value("Employee", self.employee, "shift_request_approver")
+		approvers = frappe.db.sql("""select approver from `tabDepartment Approver` where parent= %s and parentfield = 'shift_request_approver'""", (department))
+		approvers = [approver[0] for approver in approvers]
+		if self.approver not in approvers:
+			frappe.throw(__("Only Approvers can Approve this Request."))
 
 	def validate_dates(self):
 		if self.from_date and self.to_date and (getdate(self.to_date) < getdate(self.from_date)):
@@ -68,28 +80,4 @@
 		msg = _("Employee {0} has already applied for {1} between {2} and {3} : ").format(self.employee,
 			d['shift_type'], formatdate(d['from_date']), formatdate(d['to_date'])) \
 			+ """ <b><a href="#Form/Shift Request/{0}">{0}</a></b>""".format(d["name"])
-		frappe.throw(msg, OverlapError)
-
-	def get_working_days(self, start_date, end_date):
-		start_date, end_date = getdate(start_date), getdate(end_date)
-
-		from datetime import timedelta
-
-		date_list = []
-		employee_holiday_list = []
-
-		employee_holidays = frappe.db.sql("""select holiday_date from `tabHoliday`
-								where parent in (select holiday_list from `tabEmployee`
-								where name = %s)""",self.employee,as_dict=1)
-
-		for d in employee_holidays:
-			employee_holiday_list.append(d.holiday_date)
-
-		reference_date = start_date
-		
-		while reference_date <= end_date:
-			if reference_date not in employee_holiday_list:
-				date_list.append(reference_date)
-			reference_date += timedelta(days=1)
-
-		return date_list
\ No newline at end of file
+		frappe.throw(msg, OverlapError)
\ No newline at end of file
diff --git a/erpnext/hr/doctype/shift_request/test_shift_request.py b/erpnext/hr/doctype/shift_request/test_shift_request.py
index 1d0cf71..3dcfcbf 100644
--- a/erpnext/hr/doctype/shift_request/test_shift_request.py
+++ b/erpnext/hr/doctype/shift_request/test_shift_request.py
@@ -5,7 +5,7 @@
 
 import frappe
 import unittest
-from frappe.utils import nowdate
+from frappe.utils import nowdate, add_days
 
 class TestShiftRequest(unittest.TestCase):
 	def setUp(self):
@@ -13,14 +13,20 @@
 			frappe.db.sql("delete from `tab{doctype}`".format(doctype=doctype))
 
 	def test_make_shift_request(self):
+		department = frappe.get_value("Employee", "_T-Employee-00001", 'department')
+		set_shift_approver(department)
+		approver = frappe.db.sql("""select approver from `tabDepartment Approver` where parent= %s and parentfield = 'shift_request_approver'""", (department))[0][0]
+
 		shift_request = frappe.get_doc({
 			"doctype": "Shift Request",
 			"shift_type": "Day Shift",
 			"company": "_Test Company",
 			"employee": "_T-Employee-00001",
 			"employee_name": "_Test Employee",
-			"start_date": nowdate(),
-			"end_date": nowdate()
+			"from_date": nowdate(),
+			"to_date": add_days(nowdate(), 10),
+			"approver": approver,
+			"status": "Approved"
 		})
 		shift_request.insert()
 		shift_request.submit()
@@ -34,4 +40,10 @@
 			self.assertEqual(shift_request.employee, employee)
 			shift_request.cancel()
 			shift_assignment_doc = frappe.get_doc("Shift Assignment", {"shift_request": d.get('shift_request')})
-			self.assertEqual(shift_assignment_doc.docstatus, 2)
\ No newline at end of file
+			self.assertEqual(shift_assignment_doc.docstatus, 2)
+
+def set_shift_approver(department):
+	department_doc = frappe.get_doc("Department", department)
+	department_doc.append('shift_request_approver',{'approver': "test1@example.com"})
+	department_doc.save()
+	department_doc.reload()
\ No newline at end of file