feat: patch for project template tasks

erpnext/patches.txt

@@ -741,3 +741,4 @@ erpnext.patches.v13_0.updates_for_multi_currency_payroll
 erpnext.patches.v13_0.create_leave_policy_assignment_based_on_employee_current_leave_policy
 erpnext.patches.v13_0.add_po_to_global_search
 erpnext.patches.v13_0.update_returned_qty_in_pr_dn
+erpnext.patches.v13_0.update_project_template_tasks

erpnext/patches/v13_0/update_project_template_tasks.py

@@ -0,0 +1,32 @@
+# Copyright (c) 2019, Frappe and Contributors
+# License: GNU General Public License v3. See license.txt
+
+from __future__ import unicode_literals
+import frappe
+
+def execute():
+    templates = frappe.get_list("Project Template", fields = ["name"])
+    for template_name in templates:
+        template = frappe.get_doc("Project Template", template_name)
+        replace_tasks = False
+        new_tasks = []
+        for task in template.tasks:
+            if task.subject:
+                replace_tasks = True
+                new_task = frappe.get_doc(dict(
+                    doctype = "Task",
+                    subject = task.subject,
+                    start = task.start,
+                    duration = task.duration,
+                    task_weight = task.task_weight,
+                    description = task.description,
+                    is_template = 1
+                )).insert()
+                new_tasks.append(new_task.name)
+        if replace_tasks:
+            template.tasks = []
+            for tsk in new_tasks:
+                template.append("tasks", {
+                    "task": tsk
+                })  
+            template.save()