Saturday, August 26, 2017

Eager Loading Polymorphic Associations with Ruby on Rails



Efficiently eager loading polymorphic associations to avoid the 'n-plus-one' queries can be a challenge. Consider the following example: Attempting to eager load the authors or directors for the books or films is slightly more challenging.

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Moving Backgrounds With Mouse Position

Let's say you wanted to move the background-position on an element as you mouse over it to give the design a little pizzazz. You have ...