[fix] treeview for tasks (#11515)

[fix] treeview for tasks

erpnext/projects/doctype/task/task.json

@@ -2,8 +2,8 @@
  "allow_copy": 0, 
  "allow_guest_to_view": 0, 
  "allow_import": 1, 
- "allow_rename": 1, 
- "autoname": "field:subject", 
+ "allow_rename": 0, 
+ "autoname": "TASK.#####", 
  "beta": 0, 
  "creation": "2013-01-29 19:25:50", 
  "custom": 0, 
@@ -1214,7 +1214,7 @@
  "istable": 0, 
  "max_attachments": 5, 
  "menu_index": 0, 
- "modified": "2017-10-06 03:57:37.901446", 
+ "modified": "2017-11-10 18:37:19.660293", 
  "modified_by": "Administrator", 
  "module": "Projects", 
  "name": "Task", 

erpnext/projects/doctype/task/task.py

@@ -6,7 +6,7 @@ import frappe, json
 
 from frappe.utils import getdate, date_diff, add_days, cstr
 from frappe import _, throw
-from frappe.utils.nestedset import NestedSet, rebuild_tree
+from frappe.utils.nestedset import NestedSet
 
 class CircularReferenceError(frappe.ValidationError): pass
 
@@ -118,10 +118,10 @@ class Task(NestedSet):
 		end_date = self.exp_end_date or self.act_end_date
 		if end_date:
 			for task_name in frappe.db.sql("""
-				select name from `tabTask` as parent 
-				where parent.project = %(project)s 
+				select name from `tabTask` as parent
+				where parent.project = %(project)s
 					and parent.name in (
-						select parent from `tabTask Depends On` as child 
+						select parent from `tabTask Depends On` as child
 						where child.task = %(task)s and child.project = %(project)s)
 			""", {'project': self.project, 'task':self.name }, as_dict=1):
 				task = frappe.get_doc("Task", task_name.name)
@@ -198,22 +198,28 @@ def set_tasks_as_overdue():
 		and `status` not in ('Closed', 'Cancelled')""")
 
 @frappe.whitelist()
-def get_children():
-	doctype = frappe.local.form_dict.get('doctype')
+def get_children(doctype, parent, task=None, project=None, is_root=False):
+	conditions = ''
 
-	parent_field = 'parent_' + doctype.lower().replace(' ', '_')
-	parent = frappe.form_dict.get("parent") or ""
+	if task:
+		# via filters
+		conditions += ' and parent_task = "{0}"'.format(frappe.db.escape(task))
+	elif parent and not is_root:
+		# via expand child
+		conditions += ' and parent_task = "{0}"'.format(frappe.db.escape(parent))
+	else:
+		conditions += ' and ifnull(parent_task, "")=""'
 
-	if parent == "task":
-		parent = ""
+	if project:
+		conditions += ' and project = "{0}"'.format(frappe.db.escape(project))
 
 	tasks = frappe.db.sql("""select name as value,
+		subject as title,
 		is_group as expandable
-		from `tab{doctype}`
+		from `tabTask`
 		where docstatus < 2
-		and ifnull(`{parent_field}`,'') = %s
-		order by name""".format(doctype=frappe.db.escape(doctype),
-		parent_field=frappe.db.escape(parent_field)), (parent), as_dict=1)
+		{conditions}
+		order by name""".format(conditions=conditions), as_dict=1)
 
 	# return tasks
 	return tasks

erpnext/projects/doctype/task/task_tree.js

@@ -4,29 +4,30 @@ frappe.treeview_settings['Task'] = {
 	get_tree_nodes: "erpnext.projects.doctype.task.task.get_children",
 	add_tree_node: "erpnext.projects.doctype.task.task.add_node",
 	filters: [
+		{
+			fieldname: "project",
+			fieldtype:"Link",
+			options: "Project",
+			label: __("Project"),
+		},
 		{
 			fieldname: "task",
 			fieldtype:"Link",
 			options: "Task",
 			label: __("Task"),
-			get_query: function(){
+			get_query: function() {
 				return {
 					filters: [["Task", 'is_group', '=', 1]]
 				};
 			}
 		}
 	],
-	title: "Task",
 	breadcrumb: "Projects",
 	get_tree_root: false,
-	root_label: "task",
-	ignore_fields:["parent_task"],
-	get_label: function(node) {
-		return node.data.value;
-	},
-	onload: function(me){
+	root_label: "All Tasks",
+	ignore_fields: ["parent_task"],
+	onload: function(me) {
 		me.make_tree();
-		me.set_root = true;
 	},
 	toolbar: [
 		{
@@ -39,7 +40,7 @@ frappe.treeview_settings['Task'] = {
 					'fields': [
 						{'fieldname': 'tasks', 'label': 'Tasks', 'fieldtype': 'Text'},
 					],
-					primary_action: function(){
+					primary_action: function() {
 						d.hide();
 						return frappe.call({
 							method: "erpnext.projects.doctype.task.task.add_multiple_tasks",