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Diffstat (limited to 'guides/source/migrations.md')
-rw-r--r-- | guides/source/migrations.md | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/guides/source/migrations.md b/guides/source/migrations.md index 086cf434d9..fcfc54a3d7 100644 --- a/guides/source/migrations.md +++ b/guides/source/migrations.md @@ -150,7 +150,25 @@ class AddPartNumberToProducts < ActiveRecord::Migration end ``` -Similarly, +If you'd like to add an index on the new column, you can do that as well: + +```bash +$ rails generate migration AddPartNumberToProducts part_number:string:index +``` + +will generate + +```ruby +class AddPartNumberToProducts < ActiveRecord::Migration + def change + add_column :products, :part_number, :string + add_index :products, :part_number + end +end +``` + + +Similarly, you can generate a migration to remove a column from the command line: ```bash $ rails generate migration RemovePartNumberFromProducts part_number:string @@ -834,7 +852,7 @@ end # app/models/product.rb class Product < ActiveRecord::Base - validates :flag, presence: true + validates :flag, :inclusion => { :in => [true, false] } end ``` @@ -859,7 +877,8 @@ end # app/models/product.rb class Product < ActiveRecord::Base - validates :flag, :fuzz, presence: true + validates :flag, :inclusion => { :in => [true, false] } + validates :fuzz, presence: true end ``` |