application_helper.rb

def forem_emojify(content)
  h(content).to_str
  
      # Convert regular emoticons
  
      .gsub(' :)', ' :smile:')
      .gsub(' ;)', ' :wink:')
      .gsub(' :D', ' :laughing:')
      .gsub(' :P', ' :stuck_out_tongue:')
      .gsub(' :p', ' :stuck_out_tongue:')
      .gsub(' :O', ' :open_mouth:')
      .gsub(' :o', ' :open_mouth:')
      .gsub(' :|', ' :expressionless:')
      .gsub(' :/', ' :disappointed:')
      .gsub(' :(', ' :disappointed:')
      
      # Match emojis
      
      .gsub(/:([a-z0-9\+\-_]+):/) do |match|
          
    if Emoji.names.include?($1)
      '<img alt="' + $1 + '" height="20" src="' + asset_path("emoji/#{$1}.png") + '" style="vertical-align:middle" width="20" />'
    else
      match
    end
  end.html_safe if content.present?
end