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postsテーブルを作成する
#4
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ryohakjae114
closed
5 months ago
ryohakjae114
commented
5 months ago
rails g model Post body:string
bodyカラムにdb単位で制約を掛ける
t.string :body, limit: 140, null: false
validates :body, presence: true, length: { maximum: 140 }
140文字しか登録できないように
limit: 140
rails db:migrate