rails2.x 向数据库执行迁移相关命令

ruby script/generate migration add_column_to_model column_name:column_type 

rake db:migrate 

如果需要删除某些字段，应该是： 

ruby script/generate migration remove_column_from_model column:column_type 

新建表

ruby script/generate Model account_area employee_id:integer branch_office_id:integer

后添加索引

ruby script/generate migration add_model_index_to_product 

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