Array syntax in JSON in rails 3 on Heroku - ruby-on-rails

Question

I have the following controller code:
def index
#profiles = Profile.where("(first_name || ' ' || last_name) ILIKE ?", "%#{params[:q]}%")
#autolist = []
#profiles.each do |profile|
user = User.find_by_id(profile.user_id)
#autolist.concat([{"id",profile.id,"name",profile.first_name+" "+profile.last_name,"email",user.email}])
end
respond_to do |format|
format.html # index.html.erb
format.json { render :json => #autolist }
end
end
It works in my local environment, but crashes my app. Specifically this line: #autolist.concat([{"id",profile.id,"name",profile.first_name+" "+profile.last_name,"email",user.email}])
Any ideas?
I have a feeling it has to do with my local env using ruby 1.8.7 and the heroku app running 1.9.2

Answer 1

This works in 1.8.7:
>> h = {"id", 6}
=> {"id"=>6}
but not in 1.9.2:
>> h = {"id",6}
SyntaxError: (irb):4: syntax error, unexpected ',', expecting tASSOC
h = {"id",6}
^
from /Users/mu/Developer/.rvm/rubies/ruby-1.9.2-p180/bin/irb:16:in `<main>'
The rocket notation will serve you better:
#autolist.concat([{ "id" => profile.id, "name" => profile.first_name + " " + profile.last_name, "email" => user.email}])
I can't find any mention of this change in the 1.9.1 or 1.9.2 release notes and this is actually the first time I've seen the {'a', b} syntax for a Ruby Hash. Perhaps that notation was a deprecated feature that finally went away.
BTW, developing on 1.8.7 and deploying on 1.9.2 isn't the best idea.