diff options
Diffstat (limited to 'guides/source')
| -rw-r--r-- | guides/source/getting_started.md | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/guides/source/getting_started.md b/guides/source/getting_started.md index a091f84fb0..dfdc11de7a 100644 --- a/guides/source/getting_started.md +++ b/guides/source/getting_started.md @@ -1546,8 +1546,6 @@ class CreateComments < ActiveRecord::Migration create_table :comments do |t| t.string :commenter t.text :body - - # this line adds an integer column called `article_id`. t.references :article, index: true, foreign_key: true t.timestamps null: false @@ -1556,9 +1554,9 @@ class CreateComments < ActiveRecord::Migration end ``` -The `t.references` line sets up a foreign key column for the association between -the two models. An index for this association is also created on this column. -Go ahead and run the migration: +The `t.references` line creates an integer column called `article_id`, an index +for it, and a foreign key constraint that points to the `articles` table. Go +ahead and run the migration: ```bash $ bin/rake db:migrate |