Rails where condition on un-persisted association

Question

Is there any way to do

@destination.ratings.where(:name => 'monkey')

when none of the models are yet persisted?

Answer 1

No there isn't, but you may just use normal Ruby methods like Array#select to go through your unsaved models.

The where method and its bandmates in ActiveRecord generate SQL queries for the database, so if the model instances aren't in the database, it won't find anything.

Something like

@monkey = @destination.ratings.select{|rating| rating.name == 'monkey' }.first

could do the trick