The .find_by_....(...) meth returns the first model object found (or nil if none found), whereas .find(:all, ...) meth returns an array:
$ ./script/console >> puts Foo.find_by_id(1).class Foo >> puts Foo.find_by_id(0).class NilClass >> puts Foo.find(:all).class Array Jeff On May 14, 12:09 pm, Hubert Yoshizaki <[email protected]> wrote: > What I want to do is something like this: > > searchid = 4 > while searchid != -1 > @a += A.find_by_someid(searchid) > @b = B.find_by_someid(searchid) > searchid = @b.parentid > end > > The problem being the line > > @a += A.find_by_someid(searchid) > The error being something like > > NoMethodError: undefined method `+' for #<A:0x173f9a0> > > I tried to simply do a @a=[] but then it complains 'A' cannot be > converted into an Array. > > So, how do you combine multiple 'find' requests? > And what format do the finds return if not an array? > The output from a find looks something like: > => #<A id: 99, name: "A Name"> > > Thanks > -- > Posted viahttp://www.ruby-forum.com/. > > -- > 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 > athttp://groups.google.com/group/rubyonrails-talk?hl=en. -- 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.
