Always ignore some records in my model

rubyonrails-talk
1

Hi all,

I've got an interesting problem. I'm dealing with a legacy database, and for one of my models I always want to ignore records that have a particular column set. I would like to pretend like they don't exist. When I run MyModel.find() I don't want them to show in the result set.

I considered using after_find() to do this, but that gets called on every item in the found collection, not the entire collection. Is there some easy way to modify MyModel to insert a :conditions statement (or modify a pre-existing one) on all queries issued by the model? Ideally it would be transparent enough that the other models don't need to know anything about it.

Thanks!

-Brent

2

I've got an interesting problem. I'm dealing with a legacy database, and for one of my models I always want to ignore records that have a particular column set. I would like to pretend like they don't exist. When I run MyModel.find() I don't want them to show in the result set.

I considered using after_find() to do this, but that gets called on every item in the found collection, not the entire collection. Is there some easy way to modify MyModel to insert a :conditions statement (or modify a pre-existing one) on all queries issued by the model? Ideally it would be transparent enough that the other models don't need to know anything about it.

perhaps...

http://agilewebdevelopment.com/plugins/global_scope

Or maybe this guy wrote his idea up.

http://zargony.com/2007/08/13/scope_out-feature-default_scope