Cleaning scraped <a href> rails - ruby-on-rails

Question

I have scraped data from a website and entered it into an array using the code below:
def process_course_details(course_details)
details_array =[]
details_link = true
entry_link = true
details_info = {}
# Sets all data in hash
details_info[:url] = clean_link(course_details.search('div.coursedetails_programmeurl a'))
details_array.push(details_info)
print_details_info(details_info)
entry_link = course_details.search('ul.details_tabs').first
end
The code above stores the element being pulled as such:
View course details on provider's website
But I'd like to clean the above to the below:
http://www.abdn.ac.uk/study/courses/undergraduate/C8R1/
or failing that remove the apostrophe and have this:
View course details on providers website`

Answer 1

You can extract the href with Nokogiri like this:
html = Nokogiri::HTML('View course details on provider\'s website')
html.xpath("//a/#href").to_s # => "http://www.abdn.ac.uk/study/courses/undergraduate/C8R1/"

Answer 2

Based on your comment:
When storing other data I've scraped into the database the apostrophe
provided errors and stopped it. Once I had cleaned the apostrophe and
it no longer was part of the array the code worked and the table was
created.
db = SQLite3::Database.open('ahhh.sqlite3')
db.execute "INSERT INTO aahah (uname, cname, duration, qualification, url, entry) VALUES ('#{#uni_name}', #{#course_name}', '#{#course_duration}', '#{#course_qual}', '#{#details_entry}', '#{#requirements}')"
You are inserting the values via string interpolation:
db.execute("INSERT INTO table_name (foo, bar) VALUES ('#{#foo}', '#{#bar}')")
Apparently, if the interpolated strings contain an apostrophe, your SQL string likely becomes invalid. Even worse, this code is prone to SQL injection.
Instead you should use parameter markers and let the SQLite gem handle the escaping:
db.execute("INSERT INTO table_name (foo, bar) VALUES (?, ?)", [#foo, #bar])
This allows you to safely insert apostrophe and other special characters.