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February 27, 2009 12:43
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| module ValidBrowser | |
| # Browser restrictor | |
| # | |
| # You can choose whether to just display a warning, | |
| # or disable access completely. | |
| # | |
| # You need to include ValidBrowser in application.rb | |
| # You also need to install the UserAgent plugin - http://github.com/josh/useragent | |
| # | |
| # Example 1 - show warning: | |
| # # sessions/new.html.erb | |
| # <%- unless valid_browser? -%> | |
| # <p> | |
| # It looks like you're using an unsupported browser which means this service may not function properly.<br /> | |
| # We recommend the following browsers. | |
| # </p> | |
| # <ul> | |
| # <li><a href="http://www.apple.com/safari/download/">Safari 3.1 or later</a> (Mac / PC)</li> | |
| # <li><a href="http://www.mozilla.com/en-US/firefox/">Firefox 2 or later</a> (Mac / PC)</li> | |
| # </ul> | |
| # <%- end -%> | |
| # | |
| # Example 2 - restrict completely: | |
| # # application.rb | |
| # before_filter :restrict_browser | |
| # def restrict_browser | |
| # unless valid_browser? | |
| # render :action => '/path_to_template' | |
| # return false | |
| # end | |
| # end | |
| def self.included(base) | |
| base.class_eval do | |
| helper_method :valid_browser? | |
| end | |
| end | |
| Browser = Struct.new(:browser, :version) | |
| SupportedBrowsers = [ | |
| Browser.new("Safari", "3.1.1"), | |
| Browser.new("Firefox", "2.0.0.14"), | |
| Browser.new("Internet Explorer", "7.0") | |
| ] | |
| protected | |
| def valid_browser? | |
| return if request.user_agent.blank? | |
| user_agent = UserAgent.parse(request.user_agent) | |
| SupportedBrowsers.detect { |browser| user_agent >= browser } | |
| end | |
| end |
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