Configurable error traceback (#3464)

* Configurable error traceback

* Create system_settings.json

frappe/core/doctype/system_settings/system_settings.json

@@ -801,6 +801,38 @@
    "set_only_once": 0, 
    "unique": 0
   }, 
+  {
+   "allow_bulk_edit": 0, 
+   "allow_on_submit": 0, 
+   "bold": 0, 
+   "collapsible": 0, 
+   "columns": 0, 
+   "default": "1", 
+   "description": "", 
+   "fieldname": "allow_error_traceback", 
+   "fieldtype": "Check", 
+   "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": "Show Full Error and Allow Reporting of Issues to the Developer", 
+   "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, 
+   "unique": 0
+  }, 
   {
    "allow_bulk_edit": 0, 
    "allow_on_submit": 0, 
@@ -933,7 +965,7 @@
  "issingle": 1, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2017-05-23 09:12:50.353877", 
+ "modified": "2017-06-12 13:05:28.924098", 
  "modified_by": "Administrator", 
  "module": "Core", 
  "name": "System Settings", 
@@ -968,4 +1000,4 @@
  "sort_order": "ASC", 
  "track_changes": 1, 
  "track_seen": 0
-}
+}

frappe/patches/v8_0/set_allow_traceback.py

@@ -0,0 +1,5 @@
+import frappe
+
+def execute():
+    frappe.reload_doc('core', 'doctype', 'system_settings')
+    frappe.db.sql("update `tabSystem Settings` set allow_error_traceback=1")

frappe/utils/response.py

@@ -18,10 +18,11 @@ from werkzeug.wrappers import Response
 from werkzeug.exceptions import NotFound, Forbidden
 from frappe.core.doctype.file.file import check_file_permission
 from frappe.website.render import render
+from frappe.utils import cint
 
 def report_error(status_code):
 	'''Build error. Show traceback in developer mode'''
-	if (frappe.conf.developer_mode
+	if (cint(frappe.db.get_system_setting('allow_error_traceback'))
 		and (status_code!=404 or frappe.conf.logging)
 		and not frappe.local.flags.disable_traceback):
 		frappe.errprint(frappe.utils.get_traceback())