Sorry guys,
It''s a simple question but I''m a bit lost:
I''ve the following controller:
class CalendarController < ApplicationController
$srcArray = Array.new
def index
@calendars = Calendar.find(:all)
@calendars.each do |c|
$srcArray = $srcArray << c.name+''&''
end
@iframe = build_iFrame
end
def update_calendar
$srcArray.delete_at(1)
@iframe2 = build_iFrame
end
private
def build_iFrame
src = $srcArray.to_s
src = src.chop
@iframe =
''<b>blablabla;src=''+src+'';blablabla</b>''
return @iframe
end
end
When it''s called it builds a global array based on a DB.
Then it returns a bold string to the View. FINE.
I''ve an ajaxed link_to_remote that calls the function update_calendar.
It''d be supposed to remove the first position of the global array and
return the same bold string without the 1st position. But it returns
nil.
I don''t know what''s the problem since the global array was
previously
built.
Thanks for your help.
--
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On Dec 28, 2007, at 10:45 AM, Nuno Machado wrote:> > Sorry guys, > > It''s a simple question but I''m a bit lost: > > I''ve the following controller: > > class CalendarController < ApplicationController > $srcArray = Array.new > > def index > @calendars = Calendar.find(:all) > @calendars.each do |c| > $srcArray = $srcArray << c.name+''&'' > end > @iframe = build_iFrame > end > > def update_calendar > $srcArray.delete_at(1) > @iframe2 = build_iFrame > end > > private > def build_iFrame > src = $srcArray.to_s > src = src.chop > @iframe = ''<b>blablabla;src=''+src+'';blablabla</b>'' > return @iframe > end > end > > When it''s called it builds a global array based on a DB. > Then it returns a bold string to the View. FINE. > > I''ve an ajaxed link_to_remote that calls the function update_calendar. > It''d be supposed to remove the first position of the global array and > return the same bold string without the 1st position. But it returns > nil. > > I don''t know what''s the problem since the global array was previously > built. >I''ve not used globals very much, but if each call into a controller is stateless, your global is not surviving. You''d need to write it into session in order to do what you are suggesting. Peace, Phillip --~--~---------~--~----~------------~-------~--~----~ 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-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
> I''ve not used globals very much, but if each call into a controller > is stateless, your global is not surviving. You''d need to write it > into session in order to do what you are suggesting. > > Peace, > PhillipHi Phillip, Yes, you''re absolutely right. Due to the stateless nature of the HTTP protocol, I had to write the array into a session variable. Many, many thanks. -- Posted via http://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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
On 28 Dec 2007, at 19:14, Nuno Machado wrote:> > >> I''ve not used globals very much, but if each call into a controller >> is stateless, your global is not surviving. You''d need to write it >> into session in order to do what you are suggesting. >> >> Peace, >> Phillip > > > Hi Phillip, > > Yes, you''re absolutely right. > Due to the stateless nature of the HTTP protocol, I had to write the > array into a session variable. >It''s not actually the statelessness of the http protocol: you code exists in a long running ruby process. However in development mode you code is reloaded on each request and so your global is reset to Array.new each time. Regardless a global is a bad thing to use because you''ve only got one global but possibly many simultaneous users of your app, so the users would interfere with each other. Fred> Many, many thanks. > -- > Posted via http://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 rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---