回答編集履歴
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File without changes
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@@ -36,7 +36,7 @@
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例えば社員modelに
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```ruby
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has_one :org_group ,->{order 'start_date desc'},class_name: 'EmpGroupLog'
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delegate :start_date,emp_group_name,to: :org_group,prefix: true
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delegate :start_date,:emp_group_name,to: :org_group,prefix: true
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```
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とかやると
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```ruby
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