How to split value from a string in ruby - ruby-on-rails

Question

My example string is listed here. i want to split every value result in array or hash to process value of each element.
<div id="test">
accno: 123232323 <br>
id: 5443534534534 <br>
name: test_name <br>
url: www.google.com <br>
</div>
How can i fetch each values in a hash or array.

Answer 1

With regex it's easy:
s = '<div id="test">
accno: 123232323 <br>
id: 5443534534534 <br>
name: test_name <br>
url: www.google.com <br>
</div>'
p s.scan(/\s+(.*?)\:\s+(.*?)<br>/).map.with_object({}) { |i, h| h[i[0].to_sym] = i[1].strip }
Or you can precise you keys (accno, id, name, url) like ([a-z]+) if they contains only lower case letters:
p s.scan(/\s+([a-z]+)\:\s+(.*?)<br>/).map.with_object({}) { |i, h| h[i[0].to_sym] = i[1].strip }
Result:
{:accno=>"123232323", :id=>"5443534534534", :name=>"test_name", :url=>"www.google.com"}
Update
in case of:
<div id="test"> accno: 123232323 id: 5443534534534 name: test_name url: www.google.com </div>
regex will be:
/([a-z]+)\:\s*(.*?)\s+/
([a-z]+) - this is hash key, and it could contains - or _, then just add it like: ([a-z]+\-_). This scheme presume that after key follows : (perhaps with space) and then some text until the space. Or (\s+|<) at the end if line ends without space: url: www.google.com</div>

Answer 2

If you are processing html, use a html/xml parser like nokogiri to pull out the text content of the required <div> tag using a CSS selector. Then parse the text into fields.
To install nokogiri:
gem install nokogiri
Then process the page and text:
require "nokogiri"
require "open-uri"
# re matches: spaces (word) colon spaces (anything) space
re_fields = /\s+(?<field>\w+):\s+(?<data>.*?)\s/
# Somewhere to store the results
record = {}
page = Nokogiri::HTML( open("http://example.com/divtest.html") )
# Select the text from <div id=test> and scan into fields with the regex
page.css( "div#test" ).text.scan( re_fields ){ |field, data|
record[ field ] = data
}
p record
Results in:
{"accno"=>"123232323", "id"=>"5443534534534", "name"=>"test_name", "url"=>"www.google.com"}
The page.css( "blah" ) selector can also be accessed as an array if you are processing multiple elements, which can be looped through with .each
# Somewhere to store the results
records = []
# Select the text from <div id=test> and scan into fields with the regex
page.css( "div#test" ).each{ |div|
record = {}
div.text.scan( re_fields ){ |field, data|
record[field] = data
}
records.push record
}
p records