Bill, I think that tutorial is a bit outdated. This one is more current:
http://chicagoboss.org/tutorial.pdf Why not use a binary instead of a string? proplists:get_value(<<"redirect">>, Req:post_params()) On Friday, February 19, 2016 at 9:41:46 PM UTC-2, Bill Norman wrote: > > BTW, I am using the current CB master for OTP 18, and running erlang 18.1. > > > On Friday, February 19, 2016 at 6:35:41 PM UTC-5, Bill Norman wrote: >> >> Hello, >> >> I am currently going through the 'Evening with Chicago Boss tutorial. >> >> I am following instructions for handling user authentication and have >> implemented this code fragment in the >> controller/evening_user_controller.erl: >> >> >> 1. login('POST', []) -> >> 2. Name = Req:post_param("name"), >> 3. case boss_db:find(ward_boss, [{name, Name}], [{limit,1}]) of >> 4. [WardBoss] -> >> 5. case WardBoss:check_password(Req:post_param("password")) of >> 6. true -> >> 7. {redirect, proplists:get_value("redirect", >> 8. Req:post_params(), "/"), >> WardBoss:login_cookies()}; >> 9. false -> >> 10. {ok, [{error, "Bad name/password combination"}]} >> 11. end; >> 12. [] -> >> 13. {ok, [{error, "No Ward Boss named " ++ Name}]} >> 14. end. >> >> My issue is that the value of the redirect (lines 7 & 8) calculates to the >> default value "/" in proplists:get_value/3. >> >> The return value of Req:post_params() is: >> [{<<"name">>,<<"Bathhouse John">>}, >> {<<"password">>,<<"password">>}, >> {<<"redirect">>,<<"http://localhost:8001/voter/list";>>}] >> >> so querying this list with proplists:get_value("redirect", >> Req:post_params()) returns undefined. >> >> I modified the code to: >> binary_to_list(proplists:get_value(list_to_binary("redirect"), >> Req:post_params())) >> >> This works but it is awfully ugly. >> >> Is there a helper method in Chicago Boss or a more elegant erlang conversion >> term >> I could use to handle the binary tuples returned by Req:get_params()? >> >> What has changed since this tutorial was written? Has the output of >> Req:get_params() >> changed? >> >> Thanks >> >> -- You received this message because you are subscribed to the Google Groups "ChicagoBoss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/chicagoboss. To view this discussion on the web visit https://groups.google.com/d/msgid/chicagoboss/99230b74-af84-4a79-b109-f4caf1fd0906%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
