Scraping the href value of anchor in Ruby - ruby

Question

Working on this project where I have to scrape a "website," which is just a an html file in one of the local folders. Anyway, I've been trying to scrape down to the href value (a url) of the anchor tag for each student object. I am also scraping for other things, so ignore the rest. Here is what I have so far:
def self.scrape_index_page(index_url) #responsible for scraping the index page that lists all of the students
#return an array of hashes in which each hash represents one student.
html = index_url
doc = Nokogiri::HTML(open(html))
# doc.css(".student-name").first.text
# doc.css(".student-location").first.text
#student_card = doc.css(".student-card").first
#student_card.css("a").text
end
Here is one of the student profiles. They are all the same, so I'm just interested in scraping the href url value.
<div class="student-card" id="eric-chu-card">
<a href="students/eric-chu.html">
<div class="view-profile-div">
<h3 class="view-profile-text">View Profile</h3>
</div>
<div class="card-text-container">
<h4 class="student-name">Eric Chu</h4>
<p class="student-location">Glenelg, MD</p>
</div>
</a>
</div>
thanks for your help!

Answer 1

Once you get an anchor tag in Nokogiri, you can get the href like this:
anchor["href"]
So in your example, you could get the href by doing the following:
student_card = doc.css(".student-card").first
href = student_card.css("a").first["href"]
If you wanted to collect all of the href values at once, you could do something like this:
hrefs = doc.css(".student-card a").map { |anchor| anchor["href"] }