ruby - How do I parse and scrape the meta tags of a URL with Nokogiri? -

-

i using nokogiri pull <h1> , <title> tags, having trouble getting these:

<meta name="description" content="i design , develop websites , applications."> <meta name="keywords" content="web designer,web developer">

i have code:

url = 'https://en.wikipedia.org/wiki/emma_watson'  page = nokogiri::html(open(url))  puts page.css('title')[0].text puts page.css('h1')[0].text puts page.css('description') puts meta description puts meta keywords

i looked in docs , didn't find anything. use regex this?

thanks.

here's how i'd go it:

require 'nokogiri'  doc = nokogiri::html(<<eot) <meta name="description" content="i design , develop websites , applications."> <meta name="keywords" content="web designer,web developer"> eot  contents = %w[description keywords].map { |name|   doc.at("meta[name='#{name}']")['content'] } contents # => ["i design , develop websites , applications.", "web designer,web developer"]

or:

contents = doc.search("meta[name='description'], meta[name='keywords']").map { |n|    n['content']  } contents # => ["i design , develop websites , applications.", "web designer,web developer"]

Comments

Post a Comment

Popular posts from this blog

html5 - What is breaking my page when printing? -

-
Image
i have questioner , don't know why when printing it's creating break before first question. live demo (link) i able resolve issue removing fieldset container had wrapped in.. having fieldset element causing of fields grouped together, , since not fit on first page, being pushed second page. removing fieldset element, able firefox print first 2 questions on page 1 identically chrome. it seems not new problem firefox , fieldset not playing nice found old bugzilla ticket 2008 has persisted , still being commented on in 2014 (link) if retaining fieldset important, found solution else came here (link) <script type='text/javascript'> $(window).bind('beforeprint', function(){ $('fieldset').each( function(item) { $(this).replacewith($('<div class="fieldset">' + this.innerhtml + '</div>')); } ) }); $(window).bind(
Read more

c# - must be a non-abstract type with a public parameterless constructor in redis -

-
when save object, got below error must non-abstract type public parameterless constructor in order use parameter 't' in generic type or method 'servicestack.redis.redisclient.store<t>(t) redisclass.getinstnace().store(msg); // error here redisclass.getinstnace().save(); as third party's class, can not edit how save object? could create wrapper around third party object call constructor, store wrapper? e.g. public class mywrapper { public thirdpartyobject thirdpartyinstance { get; set; } public mywrapper() { thirdpartyinstance = new thirdpartyobject("constructors"); } }
Read more

ajax - PHP/JSON Login script (Twitter style) not setting sessions -

-
i'm having trouble getting twitter style login work properly, reason gets stuck at session_register("useremail"); session_register("userpass"); and doesn't redirect after it. if enter wrong account data, works , appropriate error message pops up. this full code: <?php if(empty($_post['email']) || empty($_post['password'])) { die(msg(0,"all fields required")); } if(!(preg_match("/^[\.a-z0-9_\-\+]+[@][a-z0-9_\-]+([.][a-z0-9_\-]+)+[a-z]{1,4}$/", $_post['email']))) die(msg(0,"you haven't provided valid e-mail")); $host="localhost"; $username="root"; $password="x"; $db_name="x"; $tbl_name="x"; mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select db"); $useremail=$_post['email']; $userpass=
Read more