> Messages = boss_flash:get_and_clear(SessionID)
> {ok, [{flash_messages, Messages}]}

> View:

> {% for message in flash_messages %} ... {% endfor %}

> See here for a list of variables that the views can access "for free":

> http://www.chicagoboss.org/api-view.html

> Everything else must be passed in explicitly.

> On Sun, Nov 4, 2012 at 7:36 AM, @chrisco <chris.come...@gmail.com> wrote:

>> Hi,

>> I am a beginner programmer (beginner at programming in general and Erlang
>> and ChicagoBoss in particular) and am trying to understand Sessions and
>> their related Flash Messages in Chicago Boss.  I have reviewed the tutorial
>> and the API documentation and can't figure it out.  This is what I've done:

>> Created headliners_app_controller.erl
>> and put this as the one line in it:

>> -module(headliners_app, [Req, SessionID]).

>> When I run the app and use a Chrome extension ("Edit This Cookie") I see
>> that a session has been created.  So far so good.

>> When I try to test/experiment with boss_flash, as described here
>> http://www.chicagoboss.org/api-session.html, I everything goes to shit.
>>  I think (know?) I'm doing something dumb, but after trying for too long
>> (embarrassed to say how long!), I can't figure it out and decided to ask
>> for help, so here I am.

>> How do I use boss_flash?  I just basically want to get to a Chicago Boss
>> Sessions and Flash "hello world"!  Thanks.

>> Here are further details on my beginner's folly:

>> I added this line:
>> boss_flash:add(SessionID, notice, "Welcome!", "Your Session has now
>> begun!").

>> to this file:
>> headliners_app_controller.erl

>> so it now looks like this:
>> -module(appname_my_controller, [Req, SessionID]).
>> boss_flash:add(SessionID, notice, "Welcome!", "Your Session has now
>> begun!").

>> I added this line to a view file:
>> {% for flash in boss_flash %} {{ flash.method }} - {{ flash.title }} - {{
>> flash.message }} {% endfor %}

>> I restarted the server with:
>> ./init-dev.sh

>> And get this error:
>> Error:
>> {function_clause,
>>     [{erlydtl_runtime,init_counter_stats,
>>          [undefined,undefined],
>>          [{file,"src/erlydtl_runtime.erl"},{line,208}]},
>>      {headliners_app_view_search_index_html,render_internal,4,[]},
>>      {headliners_app_view_search_index_html,render,2,[]},
>>      {boss_web_controller,render_view,6,
>>          [{file,"src/boss/boss_web_controller.erl"},{line,836}]},
>>      {boss_web_controller,execute_action,5,
>>          [{file,"src/boss/boss_web_controller.erl"},{line,725}]},
>>      {boss_web_controller,execute_action,5,
>>          [{file,"src/boss/boss_web_controller.erl"},{line,727}]},
>>      {boss_web_controller,process_request,5,
>>          [{file,"src/boss/boss_web_controller.erl"},{line,459}]},
>>      {timer,tc,3,[{file,"timer.erl"},{line,194}]}]}

>> I tried all the combinations of moving the code to different files
>> (mainly just the controller for the particular view I wanted to show the
>> flash message in) and either got the same error or the server (in the
>> server shell window) seems to keep looping through "starting development
>> server" (or whatever the exact wording is that it uses when it launches).

>> Thanks,
>> Chris

>> --

> --
> Evan Miller
> http://www.evanmiller.org/

> --