Sha256: 905209b9c0f8a0c7c29b68e84cc7152c4c7100182c11f9f9726b800176f77e76
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Size: 1.62 KB
Versions: 22
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Stored size: 1.62 KB
Contents
class Tag < ActiveRecord::Base
has_many :taggings
validates_uniqueness_of :name
attr_accessor :size
named_scope :named, lambda{|tag| {:conditions => ["tags.name = ? ", tag]} }
# Returns an array of tags with a count attribute
def self.counts(options={})
with_scope(:find => {
:select => "tags.id, tags.name, count(*) as count",
:joins => :taggings,
:group => "tags.id, tags.name",
:order => "count desc, tags.name" }) do
all(options)
end
end
# Returns an array of tags with a size attribute
# This takes the same arguments as find, plus the additional `:sizes` option,
# which contols the number of sizes the tag cloud will have.
# The default number of sizes is 5.
def self.cloud(options={})
sizes = (options.delete(:sizes) || 5) - 1
sizes = 1 if sizes < 1
tags = counts(options)
return [] if tags.blank?
min = nil
max = nil
tags.each do |t|
t.count = t.count.to_i
min = t.count if (min.nil? || t.count < min)
max = t.count if (max.nil? || t.count > min)
end
divisor = ((max - min) / sizes) + 1
tags.each do |t|
t.size = ("%1.0f" % (t.count * 1.0 / divisor)).to_i
end
tags
end
def tagging_count
taggings.count
end
def self.columns_for_index
[ {:label => "Name", :method => :name, :order => "name" },
{:label => "Usages", :method => :tagging_count },
{:label => "Updated On", :method => :updated_on_string, :order => "updated_at"} ]
end
def render
@taggings = @content_block.taggings.paginate(:page => params[:page])
end
end
Version data entries
22 entries across 22 versions & 8 rubygems