html,ruby,web-scraping,nokogiri,curb , Can I get Nokogiri to scrape text from span in Ruby?


Can I get Nokogiri to scrape text from span in Ruby?

Question:

Tag: html,ruby,web-scraping,nokogiri,curb

I'm trying to scrape info from a website using nokogiri and curb, but I can't seem to find the right name/title to find out where to scrape (I'm trying to scrape the api key, which is at the bottom of the html code as "xxxxxxx") or even how to, please help, thanks. :)

The html code is below:

<body class="html not-front logged-in no-sidebars page-app page-app- page-app-8383900 page-app-keys i18n-en" data-twttr-rendered="true">

<div id="skip-link"></div>
<div id="page-wrapper">
    <!--

     Code for the global nav 

    -->
    <nav id="globalnav" class="without-subnav"></nav>
    <nav id="subnav"></nav>
    <section id="hero" class="hero-short"></section>

<div class="container">
    ::before
    <div id="messages"></div>
    <div id="gaz-content-wrap-outer" class="row">
        ::before
        <div id="gaz-content-wrap-inner" class="span12">
            <div class="row">
                ::before
                <div class="article-wrap span12">
                    <article id="gaz-content-body" class="content">
                        <header></header>
                        <div class="header-action"></div>
                        <div class="tabs"></div>

lass="d-block d-block-system g-main">

<div class="app-details">
    <h2>

        Application Settings

    </h2>
    <div class="description"></div>
    <div class="app-settings">
        <div class="row">
            ::before
            <span class="heading">

                Consumer Key (API Key)

            </span>
            <span>

                xxxxxxxxx

            </span>

All I can seem to get is the "content" text.

My code looks like:

consumer = html.at("#gaz-content-body")['class']
puts consumer

I'm not sure what to type to select the class and or span then the input text. All I can get is nokogiri to put "content".


Answer:

In this case we need to find the second span after the span with class 'heading' ,and inside the div with class 'app-settings' (just being a bit general but not too much). I'm using .search instead of .at to retrieve the two spans and get the second one.

# Gets the 2 span elements under <div class='app-settings'>.
res = html.search('#gaz-content-body .app-settings span')

# Use .text to get the contents of the 2nd element.
res[1].text.strip
# => "xxxxxxxx"

But you can also use .at to target the same with :

res = html.at("#gaz-content-body .app-settings span:nth-child(2)")
res.text.strip
# => "xxxxxxxx"

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