account's role update cause login problem

[ruxpin]

Hi everyone!
I have a rails 2.3.5 + lipsiadmin 5.1.2 app running on my mac, and i
got something strange here.
Say i have roles "administrator" and "user", when i update a account's
role to another, it just make the account can not login. I put a
flash[:notice] on login page so that i can check if the
authentication failure . It shows that authentication is work fine,
but it just do not run the redirect_back_or_default(backend_path)
right, i try reset session also get the same result, it just stop at
the login page, here is the log:
-----------------------------------------------------------------------------------------------------------------------------------------------------------
Processing Backend::SessionsController#new (for 127.0.0.1 at
2010-04-29 06:23:05) [GET]
Rendering template within layouts/backend
Rendering backend/sessions/new
Completed in 6ms (View: 4, DB: 0) | 200 OK [http://0.0.0.0/backend/
sessions/new]
SQL (0.1ms) SET NAMES 'utf8'
SQL (0.1ms) SET SQL_AUTO_IS_NULL=0


Processing Backend::SessionsController#create (for 127.0.0.1 at
2010-04-29 06:23:11) [POST]
Parameters: {"x"=>"38", "y"=>"6", "authenticity_token"=>"UdFqW/
CDEBv3DdosRs5ip+cCfGZREXmyyWpsIpovlRM=", "password"=>"123456",
"email"=>"123...@g.com"}
Account Load (0.4ms) SELECT * FROM `accounts` WHERE (email =
'123...@g.com') LIMIT 1
Account Columns (1.3ms) SHOW FIELDS FROM `accounts`
Redirected to http://0.0.0.0:3000/backend
Completed in 16ms (DB: 2) | 302 Found [http://0.0.0.0/backend/
sessions]
------------------------------------------------------------------------------------------------------------------------------------------------------------

So it stop ,but normally it should be few more steps like below:
------------------------------------------------------------------------------------------------------------------------------------------------------------
Processing Backend::BaseController#index (for 127.0.0.1 at 2010-04-29
06:37:45) [GET]
Account Columns (1.5ms) SHOW FIELDS FROM `accounts`
Account Load (0.3ms) SELECT * FROM `accounts` WHERE
(`accounts`.`id` = 1) LIMIT 1
Account Load (0.3ms) SELECT * FROM `accounts` WHERE
(`accounts`.`id` = 1)
CACHE (0.0ms) SELECT * FROM `accounts` WHERE (`accounts`.`id` =
1)
Rendering backend/base/index
Completed in 23ms (View: 3, DB: 2) | 200 OK [http://0.0.0.0/backend]
SQL (0.1ms) SET NAMES 'utf8'
SQL (0.1ms) SET SQL_AUTO_IS_NULL=0


Processing JavascriptsController#locale to js (for 127.0.0.1 at
2010-04-29 06:37:45) [GET]
Rendering javascripts/locale
Completed in 56ms (View: 53, DB: 0) | 200 OK [http://0.0.0.0/
javascripts/locale.js]
SQL (0.1ms) SET NAMES 'utf8'
SQL (0.1ms) SET SQL_AUTO_IS_NULL=0


Processing JavascriptsController#backend to js (for 127.0.0.1 at
2010-04-29 06:37:45) [GET]
Parameters: {"small"=>"0"}
Rendering javascripts/backend
Account Columns (1.4ms) SHOW FIELDS FROM `accounts`
Account Load (0.3ms) SELECT * FROM `accounts` WHERE
(`accounts`.`id` = 1) LIMIT 1

------------------------------------------------------------------------------------------------------------------------------------------------------

If i restart the app, it will runs fine again, but i can't afford to
restart my app every time updated a account's role!

Can any one help me with this situation? Thanks a lot !

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[ruxpin]

I think i found the answer.
After you update a account's role ,you also need to
AccountAccess.cache.delete(@account.id) .
More detail can be found in lipsiadmin-5.1.2/lib/access_control/
base.rb, check the @@cache.