Module: Tagger::Helper

Defined in:
lib/tagger/helper.rb

Instance Method Summary collapse

Instance Method Details

#tag_cloud(tags, css_classes = nil, &block) ⇒ Object

Build a tag cloud based on the provided tags.

tag_cloud @tags do {|tag_name, css_class|}
tag_cloud @tags, %w(t1 t2 t3 t4 t5) do {|tag_name, css_class| #=> do something }



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# File 'lib/tagger/helper.rb', line 8

def tag_cloud(tags, css_classes = nil, &block)
  # set css classes if not specified
  css_classes ||= %w[s1 s2 s3 s4 s5]

  # collect all tag totals
  totals = tags.collect(&:total)

  # get max and min totals
  max = totals.max.to_i
  min = totals.min.to_i

  divisor = ((max - min) / css_classes.size) + 1

  tags.each do |tag|
    yield tag.name, css_classes[(tag.total - min) / divisor] if divisor != 0
  end
end