Anchor DateTimeTest to fixed DateTime instead of a variable value based on Time.now#advance#to_datetime. Works around issue on 64-bit platforms with Ruby's Time#to_datetime respecting fractional seconds, and database adapters not respecting them for DateTimes, throwing off before-and-after-save equality test. References #10080, #10073

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Fixed that the Query Cache should just be ignored if the database is misconfigured (so that the "About your applications environment" works even before the database has been created) [DHH]

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Fixed that the truncation of strings longer than 50 chars should use inspect so newlines etc are escaped (closes #10385) [norbert]

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Adding missing space to documentation of the layout method. Closes #7126 [orangechicken, jeremymcanally]

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Correct example for path parameters to use strings as keys in the hash rather than symbols. Closes #7160 [akaspick]

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Fixed that habtm associations should be able to set :select as part of their definition and have that honored [DHH]

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Document that the delegate method can delegate to things other than just methods. Closes #7184 [dcmanges, jeremymcanally]

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Update documentation to reflect increased accuracy of date interval calculations. Closes #7192 [eventualbuddha]

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Fixed that habtm associations should be able to set :select as part of their definition and have that honored [DHH]

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Document how the :include option can be used in Calculations::calculate.  Closes #7446 [adamwiggins, ultimoamore]

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Reveal that the type option in migrations can be any supported column type for your database but also include caveat about agnosticism. Closes #7531 [adamwiggins, mikong]

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Add warning to documentation about using transactional fixtures when the code under test uses transactions itself. Closes #7548 [thijsv]

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Documentation for find incorrectly omits the :conditions option from various examples. Closes #7923 [mattwestcott]

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Add documentation about the virtual attribute added by validates_confirmation_of and its behavior. Closes #8815 [JEG2, matt, kampers]

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