I have a login_controller that is addressed by its URL at /login.
Since users get confused by URLs that look like /login/login, I'd
like the 'index' function to behave just like the 'login' function.
(That is, I should be able to accept GET and POST actions at /login/
login and /login.) So I do this:
-module(login_controller).
-export([index/1,
login/1,login/2,
logout/1,
signup/1]).
index(A) -> {replace,{ewc,login,login,[A]}}.
login(A) ->
case yaws_arg:method(A) of
'GET' ->
{data,{[]}};
'POST' ->
[...]
In theory, that makes 'index' do all of the same things as 'login',
by actually {replace}ing itself with 'login'.
This seems to work, except that the controller that calls this one
(myapp_app_controller) actually calls it like this:
case Ewc of
{page,_}=Page ->
Page;
_ ->
{phased, Ewc,
fun(_Ewc, Data) ->
{ewc,
html_container,
[A1,
{ewc,
sidebar_container,
[A1,
{data, Data}]}]}
end}
end.
I do this so that I can send headers from my controller (the 'login'
controller must send set_cookie and {ewr,...}). While this works for /
login/login, trying it for /login or /login/index fails with:
ERROR erlang code crashed:
File: appmod:0
Reason: {invalid_response,
[{header,
{set_cookie,
["myapp_session",61,"5",
59,32,112,97,116,104,61,"/"]}},
{redirect_local,[[],47,"author/show/1941"]}],
"Response values other than 'data' and 'ewc' tuples must
be enclosed a 'response' tuple. In addition, subcomponents may only
return 'data' and/or 'ewc' tuples."}
Req: {http_request,'POST',{abs_path,"/login/index"},{1,1}}
This means that only the content of the {replace}d {ewc,...} has been
replaced, not the other behaviours (such as the ability to send
headers).
Is this a bug, or am I going about it all wrong?
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