7: At the Car Wash

Derek and Sean talk trade schools, sneaky bugs, bad method names, before_filters, and the Superbowl.

• Turing School and Metis trade schools.
• "Car Wash" by Rose Royce
• Sean introduces accessed_fields to the ActiveRecord Attributes API.
• Peek for insights into your rails app.
• Bullet for hunting down N+1 queries and unused eager loading.
• What does Faraday middleware look like?
• The Clearance redirect loop Derek introduced and fixed.
• before filter and its friends have been deprecated in Rails 5.0
• The various ways people set instance variables in Rails controllers.
• read_attribute_before_typecast
• problems from _before_type_cast
• dirty checking causes errors
• RangeError s are hard (Sean's solution to the test placement problem was to not commit the test)

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