On 11 August 2011 19:02, 7stud -- <[email protected]> wrote: > Walter Davis wrote in post #1016097: >> On Aug 10, 2011, at 9:53 PM, 7stud -- wrote: >> >>>>> option> >>> And even that isn't entirely correct. Apparently, the name of the >>> select has to be of the form: >>> >>> an_existing_model[:an_existing_field_name_in_that_model] >>> >>> which doesn't make any sense to me. >>> >> >> I'm not sure why that is -- you're inside of a form builder, building >> a form for an object that you plan to modify when you submit that >> form, right? What you're describing here is precisely how Rails builds >> forms, and what it expects to receive when you send your controller >> the params hash. >> >> Now let's say you want to add a select field to your Post to choose a >> Topic. Post has_one :topic. >> >> <%= form_for @post do |f| %> >> >> <%= f.collection_select :topic_id, Topic.all, :id, :name, :prompt => >> true %> >> >> That gives you: >> >> <select name="post[topic_id]" id="post_topic_id" size="1"> >> <option value="">Please choose...</option> >> <option value="42">Life, the Universe, and Everything</option> >> ... >> > > > I don't know anything about associations yet. Is topic_id a field in > the Post model when a Post has_one :topic?
See the Rails Guide on Associations. Make sure you completely understand what is there, it is vital to understanding 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 [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
