nested object formは以下のrailscast動画を見れば把握できます #196 Nested Model Form Part 1 #197 Nested Model Form Part 2 チェックボックスを使用するときはちょっとめんどくさかったのでメモ 基本 Article model class Article < ActiveRecord::Base attr_accessible :articles_categories_attributes has_many :categories, :through => :articles_categories has_many :articles_categories, :dependent => :destroy accepts_nested_attributes_for :articles_categories, :a
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