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Diffstat (limited to 'guides/source/getting_started.md')
| -rw-r--r-- | guides/source/getting_started.md | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/guides/source/getting_started.md b/guides/source/getting_started.md index bdb1a61bfb..652ce1cd8d 100644 --- a/guides/source/getting_started.md +++ b/guides/source/getting_started.md @@ -1105,7 +1105,11 @@ The `method: :patch` option tells Rails that we want this form to be submitted via the `PATCH` HTTP method which is the HTTP method you're expected to use to **update** resources according to the REST protocol. -TIP: By default forms built with the _form_for_ helper are sent via `POST`. +The first parameter of the `form_tag` can be an object, say, `@article` which would +cause the helper to fill in the form with the fields of the object. Passing in a +symbol (`:article`) with the same name as the instance variable (`@article`) also +automagically leads to the same behavior. This is what is happening here. More details +can be found in [form_for documentation](http://api.rubyonrails.org/classes/ActionView/Helpers/FormHelper.html#method-i-form_for). Next we need to create the `update` action in `app/controllers/articles_controller.rb`: @@ -1376,7 +1380,9 @@ class CreateComments < ActiveRecord::Migration create_table :comments do |t| t.string :commenter t.text :body - t.references :article, index: true + + # this line adds an integer column called `article_id`. + t.references :article, index: true t.timestamps end |