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options_from_collection_for_select を使用すれば、formタグのselectの選択肢をデータベースから動的に生成することができる

form_forでの例 :job_id, options_from_collection_for_select(Hoge.all, :id, :name)


select_tag 'personnel[job_id]', options_from_collection_for_select(Hoge.all, :id, :name)
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