n2o Erlang framework email authentication -

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i'm new erlang , n2o have experience in python web development. want create authentication email address (email - password) in application instead of using avz. i've created sign page code (other code n2o_sample). instead of putting user kvs have {error, no_container}

-module(signup_page). -compile(export_all). -include_lib("n2o/include/wf.hrl"). -include_lib("n2o_sample/include/users.hrl").   title() -> [ <<"sign page">> ].  main() -> #dtl{file = "login", app = n2o_sample,                 bindings = [{title,title()},{body,body()}]}.   body() ->    [ #span{id=display}, #br{},      #span{body="email: "}, #textbox{id=user}, #br{},      #span{body="password: "}, #password{id=pass}, #br{},      #span{body="confirm password"}, #password{id=confirm}, #br{},      #button{id=signup, body="sign up",              postback=signup,source=[user,pass,confirm]}].   event(signup) ->    user = wf:q(user), password = wf:q(pass), confirm = wf:q(confirm),    u = kvs:get(user, user, undefined),    case u of      {ok, undefined} ->        case password of             undefined -> wf:update(display, <<"no pass">>);             confirm -> status = kvs:put(#user{id=user}),                         % -> {error, no_container}                        io:format("~w~n", [status]);             b -> io:format("~w~n", [b]) end;       ->  io:format("~w~n", [a]),             wf:update(display, <<"already registered!">>) end;   event(_) -> [].

you right.

the question kvs configuring. make kvs working should several steps:

1. put kvs rebar.config

    {kvs, ".*", {git, "git://github.com/synrc/kvs", {tag,"1.5.0"}}},

use frozen tag version, e.g. "1.5.0" latest stable.

2. configure kvs application in sys.config

    {n2o, [{port,8000},{transition_port, 8000}]},     {kvs, [{dba,store_mnesia},            {schema, [kvs_user, kvs_acl, kvs_feed, kvs_subscription ]} ]},

i put in example n2o configuring see should placed.

3. just after first launch of "make console" should initialize db in erlang shell:

1> kvs:join().

this instantiate mnesia tables.

4. after in erlang shell please check of problem:

2> rr(kvs_user).

first load records kvs_user module. perform check:

3> kvs:put(#user{id="maxim@synrc.com"}).

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