On 11 November 2011 12:02, Mahmoud Abdel-Fattah <mahm...@abdel-fattah.net> wrote: > I'm totally rails newbie, and just started it a couple of days ago > moving from PHP, so I've the following query, and want to know how can > I do it using ActiveRecord > > SELECT `sites`.*, `snapshots`.*, `technologies`.* > FROM `sites`, `snapshots`, `technologies` > WHERE `sites`.id = '1' > AND `snapshots`.`site_id` = `sites`.`id` > AND `technologies`.`snapshot_id` = `snapshots`.`id`
Don't think about queries, think about relationships. If you setup the has_many and belongs_to relationships then if you have a Site in @site then its snapshots are @sites.snapshots and for a given snapshot then its technologies are snapshot.technologies. Let Rails worry about the queries. Any newcomer is well advised to work through some tutorials to understand what rails can do. railstutorial.org is good and is free to use online. Also work through the Rails Guides. Make sure any tutorial you use is for the right version of Rails. Colin > > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Talk" group. > To post to this group, send email to rubyonrails-talk@googlegroups.com. > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/rubyonrails-talk?hl=en. > > -- gplus.to/clanlaw -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
