adding extra attribute to a rails command

Question

While trying to generate a new scaffold using - collection> rails generate scaffold Items name:string subcategory_id:integer users_id:integer, i missed out the 'users_id:integer' and way i can go about having this attribute on it and not by running the full command again.

Thanks

Answer 1

If you haven't already pushed the migration, you could edit db/migrate/201112*create_items.rb and add the following line:

add_column :items, :users_id, :integer

If you have already pushed the migration, create another:

rails generate migration AddUsersIdToItems users_id:integer
rake db:migrate

Then you'll have to manually edit the scaffold code:

vi app/views/items/_form.html.erb

Copy the <div> for subcategory_id and change it to :users_id

<div class="field">
  <%= f.label :subcategory_id %><br />
  <%= f.number_field :subcategory_id %>
</div>
<div class="field">
  <%= f.label :users_id %><br />
  <%= f.number_field :users_id %>
</div>

Alternatively, if you're running git, you could have run "git checkout ." after running the first scaffold generator, which would undo all your changes, then you could run it again.

Answer 2

Not really.

If you haven't added anything new to the existing scaffold yet (and are just worried about having to delete/recreate all those files) then you can run destroy first then recreate eg:

rails destroy scaffold Items
rails generate scaffold Items name:string subcategory_id:integer users_id:integer