ruby-on-rails - 将整数更改为 float 列表 Rails

Question

我要换 t.integer :mark_up到 float我该怎么做？我在我的终端中尝试过 rails g migration change_column(:stakes, :mark_up, :float)通过不断收到 syntax error near unexpected token ('

Answer 1

在您的终端中:

rails generate migration ChangeMarkUpToFloat

并在创建的文件中: db/migrate/2015xxxxxxxxxx/change_mark_up_to_float.rb
将其编辑为:

class ChangeMarkUpToFloat < ActiveRecord::Migration
  def change
    change_column :stakes, :mark_up, :float
  end
end

然后回到你的终端:

rake db:migrate