Your array is a simple array, but you're referencing it like its an
array of hashes.
Also you're using I like an incrementor, but you never increment it.
Its not very ruby-like.
Try this:
@arr_stat = Node.all.map do |node|
{:ipadd => node.ipadd, :status =>
PingExternal.new(node.ipadd) ? "online" : "offline"}
end
However, depending on what you want to do with this data later, this
may be a bad implentation.
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On 02/04/2009, at 12:18 PM, Junior Junior wangsa
<[email protected]
> wrote:
>
> 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/.
>
> >
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