In a Rails Migration (MySQL), can you specify what position a new column should be?

Question

If I\'m adding a column via MySQL, I can specify where in the table that column will be using the AFTER modifier. But if I do the add_column via a Rails migration, the colum

Answer 1

Sure you can.

• Short answer:

  add_column :users, :gender, :string, :after => :column_name
  

• Long answer:

Here is an example, let's say you want to add a column called "gender" after column "username" to "users" table.

1. Type rails g migration AddGenderToUser gender:string

2. Add "after => :username" in migration that was created so it looks like this:

   class AddSlugToDictionary < ActiveRecord::Migration
     def change
       add_column :users, :gender, :string, :after => :username
     end
   end