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Rails迁移

代码示例

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如何创建迁移rails 

rails g migration AddPartNumberToProducts
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默认值rails迁移 

t.integer :col_name, :default => 0
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ruby on rails db migrate 

rails db:migrate
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请参阅迁移历史rails 

rake db:migrate:status
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里亚尔db下来 

bin/rails db:migrate:down VERSION=YYYYMMDDHHMMSS

类似页面

带有示例的类似页面

默认值rails迁移
rails迁移添加默认值
rails迁移

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