[logging] added webnotes.log() and logging property in conf.py to enable debug logs

public/js/wn/request.js

@@ -170,9 +170,22 @@ wn.request.cleanup = function(opts, r) {
 	
 	// debug messages
 	if(r._debug_messages) {
+		console.log("-")
+		console.log("-")
+		console.log("-")
+		if(opts.args) {
+			console.log("<<<< arguments ");
+			console.log(opts.args);
+			console.log(">>>>")
+		}
 		$.each(JSON.parse(r._debug_messages), function(i, v) { console.log(v); });
-		console.log("Response:");
+		console.log("<<<< response");
+		delete r._debug_messages;
 		console.log(r);
+		console.log(">>>>")
+		console.log("-")
+		console.log("-")
+		console.log("-")
 	}
 	
 	if(r['403']) {

webnotes/db.py

@@ -103,6 +103,12 @@ class Database:
 						webnotes.errprint(query % values)
 					except TypeError:
 						webnotes.errprint([query, values])
+				if getattr(conf, "logging", False)==2:
+					webnotes.log("<<<< query")
+					webnotes.log(query)
+					webnotes.log("with values:")
+					webnotes.log(values)
+					webnotes.log(">>>>")
 				
 				self._cursor.execute(query, values)
 				
@@ -110,6 +116,10 @@ class Database:
 				if debug:
 					self.explain_query(query)
 					webnotes.errprint(query)
+				if getattr(conf, "logging", False)==2:
+					webnotes.log("<<<< query")
+					webnotes.log(query)
+					webnotes.log(">>>>")
 					
 				self._cursor.execute(query)	
 		except Exception, e:

webnotes/utils/__init__.py

@@ -193,9 +193,12 @@ def now_datetime():
 
 def get_user_time_zone():
 	global user_time_zone
+	if not user_time_zone:
+		user_time_zone = webnotes.cache().get_value("time_zone")
 	if not user_time_zone:
 		user_time_zone = webnotes.conn.get_value('Control Panel', None, 'time_zone') \
 			or 'Asia/Calcutta'
+		webnotes.cache().set_value("time_zone", user_time_zone)
 	return user_time_zone
 
 def convert_utc_to_user_timezone(utc_timestamp):