How to add several columns to a database in Rails

问题

Hi I just created a database in RoR. I now want to add 10 more columns to it. However, I dont want to use the following type of command that adds only 1 column at a time:

rails generate migration AddClosing_Hrs1ToBusinesses closing_hrs1:string

Is there a way to add multiple columns to my database without having to type a command for each column individually like above?

回答1:

You can specify your column names all in one go

rails generate migration AddClosing_Hrs1ToBusinesses closing_hrs1:string new_cloumn:string third_column:string

Documentation : http://guides.rubyonrails.org/migrations.html

来源：https://stackoverflow.com/questions/9550181/how-to-add-several-columns-to-a-database-in-rails