hi,
can anybody help me?
i wanna create a RoR monitoring application for my project.
i have a database with table named nodes
in that nodes i have id and ipadd.
here's my code:
#nodes_controller.rb
require 'net/ping'
include Net
class NodesController < ApplicationController
def index
@nodes = Node.find(:all)
@arr_stat = Array.new
i = 0
for node in @nodes do
stat = PingExternal.new(node.ipadd)
@arr_stat[i]['ipadd'] = node.ipadd
if stat
@arr_stat[i]['status'] = 'online';
puts "online"
else
@arr_stat[i]['status'] = 'offline';
puts "offline"
end
end
respond_to do |format|
format.html { render :html => @arr_stat }# index.html.erb
format.xml { render :xml => @nodes }
end
end
##########################
why when i run the code it always says:
You have a nil object when you didn't expect it!
You might have expected an instance of ActiveRecord::Base.
The error occurred while evaluating nil.[]=
please help me solved this.
--
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 [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
-~----------~----~----~----~------~----~------~--~---
