Home/ Questions/Q 690643
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-14T02:27:27+00:00

Background: i’m using InstantRails 2.0 I wanted to add a new column to an

  • 0

Background: i’m using InstantRails 2.0

I wanted to add a new column to an existing table using the following syntax:

ruby script/generate migration add_fieldname_to_tablename fieldname:string

So I tried

ruby script/generate migration add_invites_to_user invites:integer
ruby script/generate migration add_invites_to_users invites:integer

And to test it further

ruby script/generate migration AddInvites
ruby script/generate migration AddInvites invites:integer

All of the above give me

builder.rb:175 in ‘build’: Illegal route: the :controller must be specified! (ArgumentError)

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    An explanation of why this happens helps:

    When you run script/generate Rails will instantiate your application, which involves loading your routes amongst other things. This may seem excessive but it’s “for the best”, as the other things loaded in the Rails initialization process such as plugins, gems and initializers could affect how the migration operates.

    So yes, if you have bad routing code it will break when you try to generate anything.

    • 0