Ruby execute code in class getting inherited to
- by AdamB
I'm trying to be able to have a global exception capture where I can add extra information when an error happens. I have two classes, "crawler" and "amazon". What I want to do is be able to call "crawl", execute a function in amazon, and use the exception handling in the crawl function.
Here are the two classes I have:
require 'mechanize'
class Crawler
Mechanize.html_parser = Nokogiri::HTML
def initialize
@agent = Mechanize.new
end
def crawl
puts "crawling"
begin
#execute code in Amazon class here?
rescue Exception => e
puts "Exception: #{e.message}"
puts "On url: #{@current_url}"
puts e.backtrace
end
end
def get(url)
@current_url = url
@agent.get(url)
end
end
class Amazon < Crawler
#some code with errors
def stuff
page = get("http://www.amazon.com")
puts page.parser.xpath("//asldkfjasdlkj").first['href']
end
end
a = Amazon.new
a.crawl
Is there a way I can call "stuff" inside of "crawl" so I can use that exception handling over the entire stuff function? Is there a better way to accomplish this?
