How to detect browser type and its version

Question

how can i detect browser type and its version in Rails. I want to put check on the version of specific browser and if its not required browser version than ask user to upgrade i

Answer 1

NOTE: Be careful some search engines see this as a type of intrusion See ( Google HTTP USER AGENT )

 if request.env['HTTP_USER_AGENT'] =~ /[^\(]*[^\)]Chrome\//

or in the case of firefox

if request.env['HTTP_USER_AGENT'] =~ /[^\(]*[^\)]*[^\t]Firefox\//

and check this here you will get all you need browser Gem

browsers_detection_gem

and here is a method which can detect all browsers so chill man

def browser_detection
  result = request.env['HTTP_USER_AGENT']
  browser_compatible = ''
  if result =~ /Safari/
    unless result =~ /Chrome/
      version = result.split('Version/')[1].split(' ').first.split('.').first
      browser_compatible = 'Application is not functional for Safari version\'s '+version if version.to_i < 5
    else
      version = result.split('Chrome/')[1].split(' ').first.split('.').first
      browser_compatible = 'Application is not functional for Chrome version\'s '+version if version.to_i < 10
    end
  elsif result =~ /Firefox/
    version = result.split('Firefox/')[1].split('.').first
    browser_compatible = 'Application is not functional for Firefox version\'s '+version if version.to_i < 5
  elsif result =~ /Opera/
    version = result.split('Version/')[1].split('.').first
    browser_compatible = 'Application is not functional for Opera version\'s '+version if version.to_i < 11
  elsif result =~ /MSIE/
    version = result.split('MSIE')[1].split(' ').first
    browser_compatible = 'Application is not functional for Microsoft Internet Explorer version\'s '+version if version.to_i < 9
  end
  browser_compatible
end