Struggling with erlang

[Stock, Ingemar]

Hey all,

can somebody help me to translate this filter function into Erlang, pls?


        function(doc){
                if(doc.type === "tile"){
                        return doc.key.length <= 8;
                }else{
                        return true;
                }
        }


My first attempt was this, but I don't know how to do the "key.length <=
8" check and I'm not sure if this works at all:

        fun({Doc}) ->
                case {proplists:get_value(<<"type">>, Doc),
proplists:get_value(<<"key">>, Doc)} of
                {undefined, _} ->
                        true;
                {_, undefined} ->
                        true;
                {Type, Key} ->
                        case {Type} of
                        {<<"tile">>} ->
                                true;
                        _ ->
                                false;
                        end;
                _ ->
                        true;
                end
        end.


Thank you,
Ingemar