Update_attributes on multiple models, revert back on error

rubyonrails-talk
1

Hi,

I have one method, 'updateStuff', that will call 'update_attributes' on 3 different models in the DB.....

How can I account for validation to revert back all updates if one of the models is not valid?

I've looked into Model.valid? which doesn't seem to work for me ..

Any idea?

Thanks

2

Terpinator wrote:

I have one method, 'updateStuff', that will call 'update_attributes' on 3 different models in the DB.....

How can I account for validation to revert back all updates if one of the models is not valid?

Note that you want all-or-nothing DB updates, but, for purposes of form redisplay, always want both in-memory attribute updates and validity-checking done on each. Here's how:

1. Update attributes on each without saving using the attributes= method. 2. Call valid? on each, storing each result in a local variable. 3. Proceed with transaction-wrapped saves if all three variables are true.

3

that's what i would do, too. but you said valid? is not working for you. why is that? (where seems to be the problem?)