Sean Griffin 8e633e5058 Clean up the implementation of AR::Dirty ... This moves a bit more of the logic required for dirty checking into the attribute objects. I had hoped to remove the `with_value_from_database` stuff, but unfortunately just calling `dup` on the attribute objects isn't enough, since the values might contain deeply nested data structures. I think this can be cleaned up further. This makes most dirty checking become lazy, and reduces the number of object allocations and amount of CPU time when assigning a value. This opens the door (but doesn't quite finish) to improving the performance of writes to a place comparable to 4.1		2015-09-24 14:06:59 -06:00
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json.rb	Merge pull request #16162 from chancancode/fix_json_coder	2014-07-15 08:43:54 -07:00
yaml_column.rb	Clean up the implementation of AR::Dirty	2015-09-24 14:06:59 -06:00