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workout_id
2008 Feb 25
4
Using group in with find in an ActiveRecord appropriately
I''m playing around with the Practical Rails Projects code, and was
attempting to make a change for graphing data differently using
groupings.
Basically the code went from:
total_weight = @exercise.activities.collect {|e| e.repetitions
* e.resistance}
workout_dates = @exercise.activities.collect {|e|
e.workout.date.to_s}
To:
total_weight = @exercise.activities.find(
:all,
:select =>
"sum( repetitions * resistance ) AS resistance",...