ActiveRecord, previous values? concurrency?

[el_chief]

how does activerecord do concurrency control?

does it keep a copy of the selected database value even if it’s modified? that is how ado.net works. just wondering if activerecord does the same.

thanks

[icicntu]

Does an activerecord instance store selected values?

like say i select a "contact" from the database, change the "name", can i compare the new name against the old name?

how does activerecord do concurrency control?

thanks

Hi El Chief,

May I know what you mean by selected values? (Are you referring the HTML form select inputs?)

[el_chief]

Hi El Chief,

May I know what you mean by selected values? (Are you referring the HTML form select inputs?)

i mean the values that were selected from the database

[tonydspaniard (Antonio)]

Maybe this helps you http://www.yiiframework.com/forum/index.php?/topic/5068-activerecord-and-optimistic-locking/page__p__26423__hl__optimi+tic#entry26423