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In the latest major version of Ruby on Rails, Strong Parameters were introduced. The intent of this addition was to enable consistent and reliable parameter checking. Using Strong Parameters is simple and intuitive. It provides a very clean method API to help keep controllers DRY. However, knowing when to use Strong Parameters and how to use them correctly is very important. After all, what good is parameter validation if it is in the wrong place or conveys the wrong message? Hit the Books The t...