Get requested page <url> inside ajax call on some web page - ruby

Question

I'm using Nokogiri, at this moment, I have variable which contains code of some page: doc = Nokogiri::HTML(open(page)). There is script in code, ajax calls:
<script type="text/javascript" charset="utf-8">
$(document).ready(function(){
$("#menu").kendoMenu();
$('.menu_item').on('click', function (e){
$.ajax({
url: '/movie/101299-the-hunger-games-catching-fire/images?kind=backdrop&language=' + $(this).attr('alt') + '&translate=false',
cache: false
}).done(function(response) {
$('#image_panel').html(response);
});
});
$.ajax({
url: '/movie/101299-the-hunger-games-catching-fire/images?kind=backdrop&language=&translate=false', //goal
cache: false
}).done(function(response) {
$('#image_panel').html(response);
});
});
</script>
There is some way to get second request url, and place it to the variable, I need to go to this url. Unfortunately I didn't find something about it, maybe phantomjs can help me?

Answer 1

I think you will to manually parse the script element. You can do this by using Nokogiri to get the text of the script element. Then use a regexp to find the last url:
Assuming the script is the first on the page, you can do:
url = doc.at_css('script').text.scan(/url: '(.*)'/).last.first
The following breaks the script down to provide explanation of each step:
# Get the text of the script element
# Note that this assumes it is the first script element (you may need to be more specific)
script = doc.at_css('script').text
# Find all urls in the script
urls = script.scan(/url: '(.*)'/)
# Of the urls found, take the last one
url = urls.last
# url is actually an array of length 1, since we used a matching group in the regex
# Take the first element of the array to get the url as a string
url = url.first
#=> "/movie/101299-the-hunger-games-catching-fire/images?kind=backdrop&language=&translate=false"