Class: Redmineup::ActsAsTaggable::Tag

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
lib/redmineup/acts_as_taggable/tag.rb

Overview

:nodoc:

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.color_from_name(str) ⇒ Object 



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# File 'lib/redmineup/acts_as_taggable/tag.rb', line 22

def self.color_from_name(str)
  "##{Digest::MD5.hexdigest(str.to_s)[0..5]}"
end

.counts(options = {}) ⇒ Object

Calculate the tag counts for all tags.

:start_at - Restrict the tags to those created after a certain time
:end_at - Restrict the tags to those created before a certain time
:conditions - A piece of SQL conditions to add to the query
:limit - The maximum number of tags to return
:order - A piece of SQL to order by. Eg 'count desc' or 'taggings.created_at desc'
:at_least - Exclude tags with a frequency less than the given value
:at_most - Exclude tags with a frequency greater than the given value



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# File 'lib/redmineup/acts_as_taggable/tag.rb', line 59

def counts(options = {})
  opt = options_for_counts(options)
  select(opt[:select]).where(opt[:conditions]).joins(opt[:joins]).group(opt[:group])
end

.find_or_create_with_like_by_name(name) ⇒ Object

LIKE is used for cross-database case-insensitivity



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# File 'lib/redmineup/acts_as_taggable/tag.rb', line 17

def self.find_or_create_with_like_by_name(name)
  # find(:first, :conditions => ["name LIKE ?", name]) || create(:name => name)
  where("LOWER(name) LIKE LOWER(?)", name).first || create(:name => name)
end

.options_for_counts(options = {}) ⇒ Object 



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# File 'lib/redmineup/acts_as_taggable/tag.rb', line 64

def options_for_counts(options = {})
  options.assert_valid_keys :start_at, :end_at, :conditions, :at_least, :at_most, :order, :limit, :joins
  options = options.dup

  start_at = sanitize_sql(["#{Tagging.table_name}.created_at >= ?", options.delete(:start_at)]) if options[:start_at]
  end_at = sanitize_sql(["#{Tagging.table_name}.created_at <= ?", options.delete(:end_at)]) if options[:end_at]

  conditions = [
    (sanitize_sql(options.delete(:conditions)) if options[:conditions]),
    start_at,
    end_at
  ].compact

  conditions = conditions.join(' AND ') if conditions.any?

  joins = ["INNER JOIN #{Tagging.table_name} ON #{Tag.table_name}.id = #{Tagging.table_name}.tag_id"]
  joins << options.delete(:joins) if options[:joins]

  at_least  = sanitize_sql(['COUNT(*) >= ?', options.delete(:at_least)]) if options[:at_least]
  at_most   = sanitize_sql(['COUNT(*) <= ?', options.delete(:at_most)]) if options[:at_most]
  having    = 'COUNT(*) > 0'
  having    = [having, at_least, at_most].compact.join(' AND ')
  group_by  = "#{Tag.table_name}.id, #{Tag.table_name}.name"
  group_by << ", #{Tag.table_name}.color" if column_names.include?('color')

  select_condition = if self.column_names.include?('color')
    "#{Tag.table_name}.id, #{Tag.table_name}.name, #{Tag.table_name}.color, COUNT(*) AS count"
  else
    "#{Tag.table_name}.id, #{Tag.table_name}.name, COUNT(*) AS count"
  end

  { :select     => select_condition,
    :joins      => joins.join(" "),
    :conditions => conditions,
    :group      => group_by,
    :having     => having
  }.update(options)
end

Instance Method Details

#==(object) ⇒ Object 



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# File 'lib/redmineup/acts_as_taggable/tag.rb', line 26

def ==(object)
  super || (object.is_a?(Tag) && name == object.name)
end

#color ⇒ Object 



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# File 'lib/redmineup/acts_as_taggable/tag.rb', line 38

def color
  if self.class.column_names.include?('color')
    db_color = read_attribute(:color)
    return ('#' + "%06x" % db_color) unless db_color.nil?
  end
  self.class.color_from_name(name)
end

#color=(color) ⇒ Object 



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# File 'lib/redmineup/acts_as_taggable/tag.rb', line 46

def color=(color)
  write_attribute(:color, color.sub(/\A#/, '').hex) unless color.blank?
end

#count ⇒ Object 



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# File 'lib/redmineup/acts_as_taggable/tag.rb', line 34

def count
  read_attribute(:count).to_i
end

#to_s ⇒ Object 



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# File 'lib/redmineup/acts_as_taggable/tag.rb', line 30

def to_s
  name
end