Quick question on this query:
@item.entries = Entry.find_recent(@td.id, 10) || []
My development log file shows that rails makes 2 calls to database! Is
rails ORM not smart enough to know to not load the lvalue of assignment thus
causing another expensive db call? Below are the stubbed models and a log
snip.
class Entry < ActiveRecord::Base
belongs_to :tracking_definition
def self.find_recent(td_id, limit=10)
find(:all, :conditions => ["tracking_definition_id = ?",
td_id], :limit
=> limit)
end
end
class Item < ActiveRecord::Base
has_many :entries
end
------------------- log snip from this one line
---------------------------------------------------
[4;36;1mItem Load (0.000000) [0;1mSELECT * FROM items WHERE
(item_id = 1) LIMIT 10
[4;35;1mEntry Load (0.000000) SELECT * FROM items WHERE
(entries.item_id = 1)
