Everyday I learn about new methods in rails and it absolutely floors me how awesome this framework is.
Imagine you have 2 models, User and InGameTrophies. The InGameTrophies holds a lot of data about the trophy type, date of acquisition etc etc. A user can have multiple trophies. Now whenever a trophy item gets updated, we want to run a background job only if one field, say trophy type gets changed. In comes the
... #if the trophy has already been saved then SomeBackgroundJob.call() if @trophy.saved_change_to_trophy_type? ... #if the trophy type has not yet been saved then SomeBackgroundJob.call() if @trophy.will_save_change_to_trophy_type? ...
Pretty neat, right? I think it is. more reading
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