[gantt] Gantt fixes (#6490)

* [gantt] fix Gantt Chart link in Modules

* [gantt] added field for Task dependent
diff --git a/erpnext/config/projects.py b/erpnext/config/projects.py
index e6c9578..87174a4 100644
--- a/erpnext/config/projects.py
+++ b/erpnext/config/projects.py
@@ -19,7 +19,7 @@
 				},
 				{
 					"type": "report",
-					"route": "Gantt/Task",
+					"route": "List/Task/Gantt",
 					"doctype": "Task",
 					"name": "Gantt Chart",
 					"description": _("Gantt chart of all tasks.")
diff --git a/erpnext/patches.txt b/erpnext/patches.txt
index 36014e7..bbabcb8 100644
--- a/erpnext/patches.txt
+++ b/erpnext/patches.txt
@@ -334,3 +334,4 @@
 erpnext.patches.v7_1.set_total_amount_currency_in_je
 finally:erpnext.patches.v7_0.update_timesheet_communications
 erpnext.patches.v7_0.update_status_of_zero_amount_sales_order
+erpnext.patches.v7_1.add_field_for_task_dependent
diff --git a/erpnext/patches/v7_1/add_field_for_task_dependent.py b/erpnext/patches/v7_1/add_field_for_task_dependent.py
new file mode 100644
index 0000000..96daa13
--- /dev/null
+++ b/erpnext/patches/v7_1/add_field_for_task_dependent.py
@@ -0,0 +1,9 @@
+import frappe
+
+def execute():
+	frappe.reload_doctype('Task')
+	for t in frappe.get_all('Task', fields=['name']):
+		task = frappe.get_doc('Task', t.name)
+		task.update_depends_on()
+		if task.depends_on_tasks:
+			task.db_set('depends_on_tasks', task.depends_on_tasks, update_modified=False)
diff --git a/erpnext/projects/doctype/task/task.json b/erpnext/projects/doctype/task/task.json
index 499bd8a..46c8746 100644
--- a/erpnext/projects/doctype/task/task.json
+++ b/erpnext/projects/doctype/task/task.json
@@ -287,6 +287,32 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fieldname": "progress", 
+   "fieldtype": "Percent", 
+   "hidden": 0, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_list_view": 0, 
+   "label": "Progress", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
    "fieldname": "section_break0", 
    "fieldtype": "Section Break", 
    "hidden": 0, 
@@ -395,6 +421,32 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "fieldname": "depends_on_tasks", 
+   "fieldtype": "Read Only", 
+   "hidden": 1, 
+   "ignore_user_permissions": 0, 
+   "ignore_xss_filter": 0, 
+   "in_filter": 0, 
+   "in_list_view": 0, 
+   "label": "depends_on_tasks", 
+   "length": 0, 
+   "no_copy": 0, 
+   "permlevel": 0, 
+   "precision": "", 
+   "print_hide": 0, 
+   "print_hide_if_no_value": 0, 
+   "read_only": 0, 
+   "report_hide": 0, 
+   "reqd": 0, 
+   "search_index": 0, 
+   "set_only_once": 0, 
+   "unique": 0
+  }, 
+  {
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
    "description": "", 
    "fieldname": "actual", 
    "fieldtype": "Section Break", 
@@ -480,32 +532,6 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
-   "fieldname": "progress", 
-   "fieldtype": "Percent", 
-   "hidden": 0, 
-   "ignore_user_permissions": 0, 
-   "ignore_xss_filter": 0, 
-   "in_filter": 0, 
-   "in_list_view": 0, 
-   "label": "Progress", 
-   "length": 0, 
-   "no_copy": 0, 
-   "permlevel": 0, 
-   "precision": "", 
-   "print_hide": 0, 
-   "print_hide_if_no_value": 0, 
-   "read_only": 0, 
-   "report_hide": 0, 
-   "reqd": 0, 
-   "search_index": 0, 
-   "set_only_once": 0, 
-   "unique": 0
-  }, 
-  {
-   "allow_on_submit": 0, 
-   "bold": 0, 
-   "collapsible": 0, 
-   "columns": 0, 
    "fieldname": "column_break_15", 
    "fieldtype": "Column Break", 
    "hidden": 0, 
@@ -828,7 +854,7 @@
  "istable": 0, 
  "max_attachments": 5, 
  "menu_index": 0, 
- "modified": "2016-09-22 18:16:50.339542", 
+ "modified": "2016-10-03 15:12:56.078675", 
  "modified_by": "Administrator", 
  "module": "Projects", 
  "name": "Task", 
@@ -844,6 +870,7 @@
    "export": 0, 
    "if_owner": 0, 
    "import": 0, 
+   "is_custom": 0, 
    "permlevel": 0, 
    "print": 1, 
    "read": 1, 
diff --git a/erpnext/projects/doctype/task/task.py b/erpnext/projects/doctype/task/task.py
index b918e3a..34b9ed5 100644
--- a/erpnext/projects/doctype/task/task.py
+++ b/erpnext/projects/doctype/task/task.py
@@ -29,6 +29,7 @@
 	def validate(self):
 		self.validate_dates()
 		self.validate_status()
+		self.update_depends_on()
 
 	def validate_dates(self):
 		if self.exp_start_date and self.exp_end_date and getdate(self.exp_start_date) > getdate(self.exp_end_date):
@@ -46,6 +47,12 @@
 			from frappe.desk.form.assign_to import clear
 			clear(self.doctype, self.name)
 
+	def update_depends_on(self):
+		depends_on_tasks = ""
+		for d in self.depends_on:
+			depends_on_tasks += d.task + ","
+		self.depends_on_tasks = depends_on_tasks
+
 	def on_update(self):
 		self.check_recursion()
 		self.reschedule_dependent_tasks()
@@ -156,5 +163,3 @@
 		and exp_end_date < CURDATE()
 		and `status` not in ('Closed', 'Cancelled')""")
 		
-
-		
diff --git a/erpnext/projects/doctype/task/task_list.js b/erpnext/projects/doctype/task/task_list.js
index d9e8f55..4bfa781 100644
--- a/erpnext/projects/doctype/task/task_list.js
+++ b/erpnext/projects/doctype/task/task_list.js
@@ -1,5 +1,6 @@
 frappe.listview_settings['Task'] = {
-	add_fields: ["project", "status", "priority", "exp_start_date", "exp_end_date", "subject", "progress"],
+	add_fields: ["project", "status", "priority", "exp_start_date",
+		"exp_end_date", "subject", "progress", "depends_on_tasks"],
 	filters: [["status", "=", "Open"]],
 	onload: function(listview) {
 		var method = "erpnext.projects.doctype.task.task.set_multiple_status";