From: Jb Smith <dongleberry@...>
Date: 2007-01-26T02:01:41+09:00
Subject: Re: Hpricot question

furfey@gmail.com wrote:
> In a statement like this:
> 
> doc=Hpricot(open(url))
> 
> Is there a way to pull the url as a value from a database?

lets say you've done this in your controller where the Feed is a model 
with a url field in it.

--feed_controller.rb

   def pullfeed
    @feed = Feed.find(params[:id])
    Parsefeed.parse(@feed.id)
   end

The @feed can be used to fetch the field with a url in it, in your 
hpricot model.
if you have required 'open-uri' in your model. otherwise hpricot can 
only open local resources.

--parsefeed.rb  is a model not subclassed from ActiveRecord if not 
needed

class Parsefeed
 require 'hpricot'
 require 'open-uri'

  def self.parse(feedID)
    doc=[]
    @feed = Feed.find(feedID)
    doc = Hpricot(open(@feed.url))    #this is where you employ the url 
from the database model
    <!---    add your doc parsing code below  -->
 end
end





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