Friday, February 1, 2013
I have three class,HotActivity, Activity和ActivityType
HotActivity and Activity is one to one association, Activity belongs to ActivityType
in controller I code like this
@hot_activities = HotActivity.includes(:activity)
chrome will prompt me this
user: william N+1 Query detected Activity => [:activity_type] Add to your finder: :include => [:activity_type] N+1 Query method call stack
if I add like this
@hot_activities = HotActivity.includes(:activity => :activity_type)
it prompt this
user: william Unused Eager Loading detected HotActivity => [:activity] Remove from your finder: :include => [:activity] activities:575 Uniform Notifier activities:587 user: william Unused Eager Loading detected Activity => [:activity_type] Remove from your finder: :include => [:activity_type]
some one please help,
thanks in advs
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