database - Symfony 1.4: About a new table / module -

i still not familiar symfony 1.4 , few things still unclear me.

what have done:

1. i have added new table symfony 1.4 project's database (let's call "a")
2. i have regenerated schema.yml file using $ php symfony doctrine:build-schema.

what do:

when submitting "add" form (in /new/ page) of another, different module, inserting row in "a" table.

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in future, need fetch data "a" , display them in backend part of website.

i don't have backend module related new table. (should i? how?)

if want when add row table (let's call b distinguish a) can use doctrine's lifecycle hooks, pres , posts. in case postinsert. (you can use save, update, delete, each pre or post).

each of functions executed in given moment (before or after event) of given event. save hook executed after inserts or updates don't have copy functionality 2 functions.

you should implement method in b class , add row a.

to answer other question - it's best if use symfony's admin generator , create module a. have list of rows, possibility filter list , modify rows.