Module: Zhong::WebHelpers

Defined in:
lib/zhong/web_helpers.rb

Instance Method Summary collapse

Instance Method Details

#capture(&block) ⇒ Object

Simple capture method for erb templates. The origin was capture method from sinatra-contrib library.



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# File 'lib/zhong/web_helpers.rb', line 8

def capture(&block)
  block.call
  eval('', block.binding)
end

#csrf_tag ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 39

def csrf_tag
  "<input type='hidden' name='authenticity_token' value='#{session[:csrf]}'/>"
end

#current_path ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 17

def current_path
  @current_path ||= request.path_info.gsub(/^\//,'')
end

#display_args(args, truncate_after_chars = 2000) ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 33

def display_args(args, truncate_after_chars = 2000)
  args.map do |arg|
    h(truncate(to_display(arg), truncate_after_chars))
  end.join(", ")
end

#environment_title_prefix ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 76

def environment_title_prefix
  environment = ENV['RAILS_ENV'] || ENV['RACK_ENV'] || 'development'

  "[#{environment.upcase}] " unless environment == "production"
end

#h(text) ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 68

def h(text)
  ::Rack::Utils.escape_html(text)
rescue ArgumentError => e
  raise unless e.message.eql?('invalid byte sequence in UTF-8')
  text.encode!('UTF-16', 'UTF-8', invalid: :replace, replace: '').encode!('UTF-8', 'UTF-16')
  retry
end

#number_with_delimiter(number) ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 55

def number_with_delimiter(number)
  begin
    Float(number)
  rescue ArgumentError, TypeError
    return number
  end

  options = {delimiter: ',', separator: '.'}
  parts = number.to_s.to_str.split('.')
  parts[0].gsub!(/(\d)(?=(\d\d\d)+(?!\d))/, "\\1#{options[:delimiter]}")
  parts.join(options[:separator])
end

#product_version ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 82

def product_version
  "Zhong v#{Zhong::VERSION}"
end

#relative_time(time) ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 21

def relative_time(time)
  if time
    %{<time datetime="#{time.getutc.iso8601}">#{time}</time>}
  else
    "never"
  end
end

#root_path ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 13

def root_path
  "#{env['SCRIPT_NAME']}/"
end

#to_display(arg) ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 43

def to_display(arg)
  begin
    arg.inspect
  rescue
    begin
      arg.to_s
    rescue => ex
      "Cannot display argument: [#{ex.class.name}] #{ex.message}"
    end
  end
end

#truncate(text, truncate_after_chars = 2000) ⇒ Object 



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# File 'lib/zhong/web_helpers.rb', line 29

def truncate(text, truncate_after_chars = 2000)
  truncate_after_chars && text.size > truncate_after_chars ? "#{text[0..truncate_after_chars]}..." : text
end