Set the size of a field in migration

Question

How do I set the size of a string-like field in a Migration? Ex:

class CreateRooms < ActiveRecord::Migration
def change
create_table :rooms do |t|
  t.string :title
  t.string :location
  t.text :description

  t.timestamps
end
end
end

How can I say that the title field is varchar(50)

Answer 1

Use the parameter limit:

t.string :title, limit: 50

Official documentation here: http://guides.rubyonrails.org/migrations.html#column-modifiers