Module: Nifty::Utils::ViewHelpers

Defined in:
lib/nifty/utils/view_helpers.rb

Instance Method Summary collapse

Instance Method Details

#boolean_tag(bool, tip = nil, options = {}) ⇒ Object

Renders a tick or cross character based on the provided boolean. Additional options can be passed if needed.

  • :true_text - text to display next to a tick
  • :false_text - text to display next to a cross


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# File 'lib/nifty/utils/view_helpers.rb', line 46

def boolean_tag(bool, tip = nil, options = {})
  true_text, false_text = "", ""
  true_text = " <b>#{options[:true_text]}</b>" if options[:true_text]
  false_text = " <b>#{options[:false_text]}</b>" if options[:false_text]
  content_tag :span, (bool ? "<span class='true'>&#x2714;#{true_text}</span>" : "<span class='false'>&#x2718;#{false_text}</span>").html_safe, :class => "boolean", :title => tip
end

#display_flash(options = {}) ⇒ Object

Displays the full contents of the flash hash within an appropriate

element. The ID of the outputted div will be flash-alert where alert is the type of flash.

  • :types: the names of flash messages to display with this helper


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# File 'lib/nifty/utils/view_helpers.rb', line 10

def display_flash(options = {})
  options[:types] ||= [:alert, :warning, :notice]
  options[:types].map do |key|
    if flash[key]
      content_tag :div, content_tag(:p, h(flash[key])), :id => "flash-#{key}", :class => "flashMessage flashMessage--#{key}"
    end
  end.join.html_safe
end

#google_fonts(sets = {}) ⇒ Object

Return a Google Fonts tag



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# File 'lib/nifty/utils/view_helpers.rb', line 92

def google_fonts(sets = {})
  sets = sets.each_with_object([]) do |(name, weights), array|
    array << "#{name}:#{weights.join(',')}"
  end.join('|')
  "<link href='https://fonts.googleapis.com/css?family=#{sets}' rel='stylesheet' type='text/css'>".html_safe
end

#gravatar(email, options = {}) ⇒ Object

Renders an <img> containing a link to the gravatar for the given e-mail address. Available options as follows:

  • :size: the size in pixels of the outputted gravatar. Defaults to 35.
  • :default: the gravatar to fallback to if the user has no gravatar (see gravatar for available options or pass a URL). Defaults to 'identicon'.
  • :rating: the maximum rating to use. Defaults to PG.
  • :class: the value for the class attribute for the outputted img tag. Defaults to 'gravatar'.
  • :secure: wherher or not to output an HTTPS version of the gravatar or not. Defaults to the value of request.ssl?.


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# File 'lib/nifty/utils/view_helpers.rb', line 30

def gravatar(email, options = {})
  options[:size]    ||= 35
  options[:default] ||= 'identicon'
  options[:rating]  ||= 'PG'
  options[:class]   ||= 'gravatar'
  options[:secure]  ||= request.ssl?
  host = (options[:secure] ? 'https://secure.gravatar.com' : 'http://gravatar.com')
  path = "/avatar.php?gravatar_id=#{Digest::MD5.hexdigest(email.to_s.downcase)}&rating=#{options[:rating]}&size=#{options[:size] * 2}&d=#{options[:default]}"
  image_tag([host,path].join, :class => options[:class], :width => options[:size], :height => options[:size])
end

#length_of_time_in_words(seconds, options = {}) ⇒ Object

Returns a length of time in works (no I18N)



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# File 'lib/nifty/utils/view_helpers.rb', line 63

def length_of_time_in_words(seconds, options = {})
  days = (seconds / 60 / 60 / 24).floor
  hours = ((seconds / 60 / 60) - (days * 24)).floor
  minutes = ((seconds / 60) - (days * 24 * 60) - (hours * 60)).floor
  seconds = (seconds - (days * 24 * 60 * 60) - (hours * 60 * 60) - (minutes * 60)).floor
  Array.new.tap do |s|
    if options[:short]
      s << "#{days}d" if days > 0
      s << "#{hours}h" if hours > 0
      s << "#{minutes}m" if minutes > 0
      s << "#{seconds}s" if seconds > 0
    else
      s << pluralize(days, 'day') if days > 0
      s << pluralize(hours, 'hour') if hours > 0
      s << pluralize(minutes, 'minute') if minutes > 0
      s << pluralize(seconds, 'second') if seconds > 0
    end
  end.join(options[:short] ? ' ' : ', ')
end

#rfc4226_qrcode(token) ⇒ Object

Return an image path for an RFC4226 QR code for a tiven RTP token



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# File 'lib/nifty/utils/view_helpers.rb', line 84

def rfc4226_qrcode(token)
  data = "otpauth://totp/#{request.host}?secret=#{token}"
  data = Rack::Utils.escape(data)
  url = "https://chart.googleapis.com/chart?chs=200x200&chld=M|0&cht=qr&chl=#{data}"
  image_tag(url, :alt => 'Google Authenticator QRCode', :width => 200, :height => 200)
end

#twitter_share_url(options = {}) ⇒ Object

Returns a URL to share some content on Twitter

  • :text - the text you wish to tweet
  • :url - the URL you want to tweet


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# File 'lib/nifty/utils/view_helpers.rb', line 57

def twitter_share_url(options = {})
  "https://twitter.com/share?text=#{CGI.escape(options[:text])}&url=#{CGI.escape(options[:url])}"
end