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authorDavid Heinemeier Hansson <david@loudthinking.com>2005-01-24 13:48:24 +0000
committerDavid Heinemeier Hansson <david@loudthinking.com>2005-01-24 13:48:24 +0000
commit45db66de56d4f5c4cd83aba782015d5ce752f3a2 (patch)
treebbe515990a81cf1afc161d5dad39837a27081965 /actionpack/lib/action_view
parent505e2d99da9f0e199dd0bf248fc1db77145730ba (diff)
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Added :encode option to mail_to that'll allow you to masquarede the email address behind javascript or hex encoding #494 [Lucas Carlson]
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@493 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
Diffstat (limited to 'actionpack/lib/action_view')
-rw-r--r--actionpack/lib/action_view/helpers/url_helper.rb29
1 files changed, 28 insertions, 1 deletions
diff --git a/actionpack/lib/action_view/helpers/url_helper.rb b/actionpack/lib/action_view/helpers/url_helper.rb
index 0113c42eb7..0661c961b6 100644
--- a/actionpack/lib/action_view/helpers/url_helper.rb
+++ b/actionpack/lib/action_view/helpers/url_helper.rb
@@ -91,8 +91,35 @@ module ActionView
# Creates a link tag for starting an email to the specified <tt>email_address</tt>, which is also used as the name of the
# link unless +name+ is specified. Additional HTML options, such as class or id, can be passed in the <tt>html_options</tt> hash.
+ #
+ # You can also make it difficult for spiders to harvest email address by obfuscating them.
+ # Examples:
+ # * mail_to "me@domain.com", "My email", :encode => "javascript"
+ # => <script type="text/javascript" language="javascript">eval(unescape('%64%6f%63%75%6d%65%6e%74%2e%77%72%69%74%65%28%27%3c%61%20%68%72%65%66%3d%22%6d%61%69%6c%74%6f%3a%6d%65%40%64%6f%6d%61%69%6e%2e%63%6f%6d%22%3e%4d%79%20%65%6d%61%69%6c%3c%2f%61%3e%27%29%3b'))</script>
+ # * mail_to "me@domain.com", "My email", :encode => "hex"
+ # => <a href="mailto:%6d%65@%64%6f%6d%61%69%6e.%63%6f%6d">My email</a>
def mail_to(email_address, name = nil, html_options = {})
- content_tag "a", name || email_address, html_options.merge({ "href" => "mailto:#{email_address}" })
+ encode = html_options[:encode]
+ html_options.delete(:encode)
+ string = ''
+ if encode == 'javascript'
+ tmp = "document.write('#{content_tag("a", name || email_address, html_options.merge({ "href" => "mailto:"+email_address.to_s }))}');"
+ for i in 0...tmp.length
+ string << sprintf("%%%x",tmp[i])
+ end
+ "<script type=\"text/javascript\" language=\"javascript\">eval(unescape('#{string}'))</script>"
+ elsif encode == 'hex'
+ for i in 0...email_address.length
+ if email_address[i,1] =~ /\w/
+ string << sprintf("%%%x",email_address[i])
+ else
+ string << email_address[i,1]
+ end
+ end
+ content_tag "a", name || email_address, html_options.merge({ "href" => "mailto:#{string}" })
+ else
+ content_tag "a", name || email_address, html_options.merge({ "href" => "mailto:#{email_address}" })
+ end
end
private