Rails change database connection

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  Or even multiple scope parameters. For example, making sure that a teacher can only be on the schedule once per semester for a particular class.

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  Encryption and decryption in rails

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  Ruby filename from path

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  Travis ci NameError: uninitialized constant SimpleCov

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  Ruby select first n elements from array

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  One line each loop ruby

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  Ruby add coma to array of string

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