I am trying to do this, where associated_record_type is always of the name
of a model, passed to the method:
record =
eval("#{associated_record_type}").find_by_id(associated_record_id)
Is there a way to do this dynamically without using an eval?
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On 3 May 2011 20:26, David Kahn <dk-rfEMNHKVqOwNic7Bib+Ti1W1rNmOCjRP@public.gmane.org> wrote:> record = eval("#{associated_record_type}").find_by_id(associated_record_id) > > Is there a way to do this dynamically without using an eval?record = associated_record_type.classify.constantize.find_by_id(associated_record_id) -- 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On 3 May 2011 20:30, Michael Pavling <pavling-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> On 3 May 2011 20:26, David Kahn <dk-rfEMNHKVqOwNic7Bib+Ti1W1rNmOCjRP@public.gmane.org> wrote: >> record = eval("#{associated_record_type}").find_by_id(associated_record_id) >> >> Is there a way to do this dynamically without using an eval? > > record = associated_record_type.classify.constantize.find_by_id(associated_record_id) >Actually, you might be better off with just .constantize - depends what precise value you have in "associated_record_type" record = associated_record_type.constantize.find_by_id(associated_record_id) http://api.rubyonrails.org/v2.3.8/classes/ActiveSupport/CoreExtensions/String/Inflections.html -- 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
On Tue, May 3, 2011 at 2:33 PM, Michael Pavling <pavling-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> On 3 May 2011 20:30, Michael Pavling <pavling-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > On 3 May 2011 20:26, David Kahn <dk-rfEMNHKVqOwNic7Bib+Ti1W1rNmOCjRP@public.gmane.org> wrote: > >> record > eval("#{associated_record_type}").find_by_id(associated_record_id) > >> > >> Is there a way to do this dynamically without using an eval? > > > > record > associated_record_type.classify.constantize.find_by_id(associated_record_id) > > > > Actually, you might be better off with just .constantize - depends > what precise value you have in "associated_record_type" >Michael, thats just what I was looking for. It is a polymorphic situation and the value in the field is a string, so works out perfect. Thanks!> > record > associated_record_type.constantize.find_by_id(associated_record_id) > > > http://api.rubyonrails.org/v2.3.8/classes/ActiveSupport/CoreExtensions/String/Inflections.html > > -- > 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-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > To unsubscribe from this group, send email to > rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org > For more options, visit this group at > http://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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.