 
 	try {
 		var channel = new Channel(channelData);
+
+		if (!isPathValid(channel)) {
+			this.body = 'Channel cannot have both path and pathTransform. pathTransform must be of the form s/from/to[/g]';
+			this.status = 400;
+			return;
+		}
+
 		var result = yield Q.ninvoke(channel, 'save');
 
 		// All ok! So set the result

		this.body = e.message;
		this.status = 500;
	}
}`
Channel = require('../model/channels').Channel
Q = require 'q'
logger = require 'winston'

isPathValid = (channel) ->
	# There cannot be both path and pathTranform. pathTransform must be valid
	not (channel.path and channel.pathTransform) and (not channel.pathTranform or /s\/.*\/.*/.test channel.pathTransform)

###
# Retrieves the list of active channels
