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task x
Move Find into Model
Move a find into the model to clean up the controllers and remove duplication. Also see how you can call these custom find methods through an association.
(2 minutes)
Dynamic find_by Methods
Shorten simple finds considerably and improve readability by using the dynamic find_all_by and find_by methods.
(1 minute)
SQL Injection
One of the most common security problems for dynamic sites is SQL Injection. Thankfully Rails does everything it can in solving this issue, but you still need to be aware of it.
(5 minutes)
Find Through Association
No need to pass foreign keys in find conditions, just do the find through a has_many association.
(2 minutes)