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December 20, 2015 01:39
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Inconsistency of ActiveRecord Association. Need to reload before `exists?` but not for `size`.
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| @foo = @parent.foos.build(name: 'Foo') | |
| @foo.bars.build(greeting: 'hello') | |
| @foo.save | |
| @foo.bars.exists? # -> nil | |
| @foo.bars.size > 0 #-> true |
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