Route helper with params

base.mustache

<a href="{{route 'user.userForName' 'name: user.userName'}}">User Page</a><br/>

RouteHelper.kt

class RouteHelper(private val router: Router) : BasicValueHelper()
{
	override fun execute(options: Options?)
	{
		if( options != null )
		{
			val parameters = options.parameters
			if( parameters != null && parameters.isNotEmpty() )
			{
				val routeName = parameters[0] as String

				val args = mutableMapOf<String,Any>()
				parameters.drop(1).forEach {argument ->
					argument as String
					val parts = argument.split(":")
					val name = parts[0].trim()
					val key = parts[1].trim()
					val value = options.getValue(key) ?: throw IllegalStateException("Could not find value for: $key")

					args[name] = value
				}

				val route = router.uriFor(routeName, args) ?: throw IllegalStateException("Could not find route for name: $routeName")

				append(options, route)
			}
		}
	}
}