NB: AddFooToPosts would be AddOwnerIdToCats, I just messed up the copy paste.
On Tue, Feb 11, 2014 at 11:10 AM, James Turley < [email protected]> wrote: > Example: an owner has many cats. > > In your Cat model, add the line: > belongs_to :owner > > in your Owner model, add the line: > has_many :cats > > You then need to run a migration on your cats table, to add the foreign > key for owners, so Rails can build the associations. From the command line: > > rails g migration add_owner_id_to_cats owner_id:integer > > This should create a migration file (in the /db folder), with something > like the following in it: > > class AddFooToPosts < ActiveRecord::Migration > def change > add_column :cats, :owner_id, :integer # ie, table, field name, field > type > end > end > > then, run your migration. > > rake db:migrate > > Thanks to the convention over configuration approach, rails will > automagically work out that owner_id is a foreign key to the owners table. > from there, you'll be able to access cats through owners, and owners > through cats: > > mog.owner # "Steve" > steve.cats.first # "Mog" > > That, of course, is just the tip of the iceberg - you can define all kinds > of odd relations, and customise them as much as you want. > > JT > > > > > On Mon, Feb 10, 2014 at 8:28 PM, Colin Law <[email protected]> wrote: > >> On 10 February 2014 16:50, Ken D'Ambrosio <[email protected]> >> wrote: >> > Hey! I'm decent at Ruby, but pretty darn new to Rails. Working through >> > some tutorial stuff, and don't fully understand what direction to take. >> I >> > want to create a one-to-many association; how do I accomplish this? >> >> Work right through a good tutorial such as railstutorial.org (free to >> use online) and all the basics (including associations) will become >> clear. >> >> Colin >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Ruby on Rails: Talk" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/rubyonrails-talk/CAL%3D0gLvN0AVV6G%2BJH_3HY6mKXtT5tgbj2eb%3D%3DMaQfGxG_rM5Lw%40mail.gmail.com >> . >> For more options, visit https://groups.google.com/groups/opt_out. >> > > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/CAAb4X%3Dwut_fWAB_7B40NB8_dmJ7sXJNgEgCpg%2B-obG8NbqQ36A%40mail.gmail.com. For more options, visit https://groups.google.com/groups/opt_out.
