database - How to update further tables on adding a relationship in propel -

-

i'm trying work out best place update other related tables when changing foreign-key dependency.

to precise, have table called 'flat' , called 'room' contains

flat_id: {type: integer, foreigntable:flat, foreignreference: id, required: true }

as method room::setflatid(), propel (1.3) has therefore given me room::setflat()

but when add room flat, want automatically make changes other related tables, keep consistency @ higher level database definition. thought override flat::addroom(room $room) call parent , make these further changes.

but i've run problem because, since 'flat_id' column required, 1 of setflatid() , setflat() called before room object saved.

but before room object saved, has no id, , therefore extended addroom cannot work because there no room_id identify related records in other tables.

this seems suggest mustn't put code flat::addroom() depends on room having been saved. can put code?

obviously, require called manually after making or changing room object; since doing maintaining kind of higher-level database integrity, i'm unwilling that. put 1 or both of 'save' methods; logically needs run when association between room , flat changed.

where should code go?

it's typical case custom behavior.


Comments

Post a Comment

Popular posts from this blog

How do you change vbulletin's home page to the forums instead of the default (CMS or Activity Stream)? -

-
i have created website using vbulletin have installed cms , blog modules in in admin default setting forums when enter homepage url redirecting me http://www.demo.com/content/ content cms page please help for vbulletin versions < 4.2. need modify forum index page located in top level of vbulletin directory. based on url in question it's file: http://www.demo.com/index.php here contents of file, can choose whether cms or forum default home page. /** * can choose default script here. uncomment appropriate line * set default script. note: uncomment 1 of these, must * add // comment out script(s) not want use * default script. * * can choose default script if not plan move * file root of website. */ /** * use cms default script: */ require('content.php'); /** * use forum default script: */ // require('forum.php'); for vbulletin versions >= 4.2. there's new "navigation manager". you'll find control settin...
Read more

c++ - Troubles when compiling phash program -

-
here (probably) simple problem: i'm trying use perceptual hashing library phash ubuntu 11.10. had ffmpeg installed, way i've done: sudo apt-get install libphash0 sudo apt-get install libphash0-dev then tried compile program: #include <iostream> #include <phash.h> using namespace std; int main() { ulong64 myhash=0; ph_dct_imagehash("test.jpg", myhash); cout<<myhash<<endl; } when compiling, prints out: undefined reference `ph_dct_imagehash' any suggestion? should do? in advance! matteo monti you forgot link phash library, linker cannot find function. try adding -l phash gcc command line (or update makefile). if doesn't work, maybe you'll need specify library path (the location of *.a file) using -l "/usr/lib/"
Read more