Class: ActsAsTaggableOn::Tag

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

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.find_or_create_all_with_like_by_name(*list) ⇒ Object 



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# File 'lib/acts_as_taggable_on/tag.rb', line 67

def self.find_or_create_all_with_like_by_name(*list)
  list = Array(list).flatten

  return [] if list.empty?

  existing_tags = named_any(list)

  list.map do |tag_name|
    comparable_tag_name = comparable_name(tag_name)
    existing_tag = existing_tags.find { |tag| comparable_name(tag.name) == comparable_tag_name }
    begin
      existing_tag || create(name: tag_name)
    rescue ActiveRecord::RecordNotUnique
      # Postgres aborts the current transaction with
      # PG::InFailedSqlTransaction: ERROR:  current transaction is aborted, commands ignored until end of transaction block
      # so we have to rollback this transaction
      raise DuplicateTagError.new("'#{tag_name}' has already been taken")
    end
  end
end

.find_or_create_with_like_by_name(name) ⇒ Object

CLASS METHODS:



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# File 'lib/acts_as_taggable_on/tag.rb', line 59

def self.find_or_create_with_like_by_name(name)
  if ActsAsTaggableOn.strict_case_match
    self.find_or_create_all_with_like_by_name([name]).first
  else
    named_like(name).first || create(name: name)
  end
end

.for_context(context) ⇒ Object 



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# File 'lib/acts_as_taggable_on/tag.rb', line 51

def self.for_context(context)
  joins(:taggings).
    where(["taggings.context = ?", context]).
    select("DISTINCT tags.*")
end

.named(name) ⇒ Object 



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# File 'lib/acts_as_taggable_on/tag.rb', line 24

def self.named(name)
  if ActsAsTaggableOn.strict_case_match
    where(["name = #{binary}?", as_8bit_ascii(name)])
  else
    where(['LOWER(name) = LOWER(?)', as_8bit_ascii(unicode_downcase(name))])
  end
end

.named_any(list) ⇒ Object 



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# File 'lib/acts_as_taggable_on/tag.rb', line 32

def self.named_any(list)
  clause = list.map { |tag|
    sanitize_sql_for_named_any(tag).force_encoding('BINARY')
  }.join(' OR ')
  where(clause)
end

.named_like(name) ⇒ Object 



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# File 'lib/acts_as_taggable_on/tag.rb', line 39

def self.named_like(name)
  clause = ["name #{ActsAsTaggableOn::Utils.like_operator} ? ESCAPE '!'", "%#{ActsAsTaggableOn::Utils.escape_like(name)}%"]
  where(clause)
end

.named_like_any(list) ⇒ Object 



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# File 'lib/acts_as_taggable_on/tag.rb', line 44

def self.named_like_any(list)
  clause = list.map { |tag|
    sanitize_sql(["name #{ActsAsTaggableOn::Utils.like_operator} ? ESCAPE '!'", "%#{ActsAsTaggableOn::Utils.escape_like(tag.to_s)}%"])
  }.join(' OR ')
  where(clause)
end

Instance Method Details

#==(object) ⇒ Object

INSTANCE METHODS:



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# File 'lib/acts_as_taggable_on/tag.rb', line 90

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

#count ⇒ Object 



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# File 'lib/acts_as_taggable_on/tag.rb', line 98

def count
  read_attribute(:count).to_i
end

#to_s ⇒ Object 



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# File 'lib/acts_as_taggable_on/tag.rb', line 94

def to_s
  name
end

#validates_name_uniqueness? ⇒ Boolean

monkey patch this method if don’t need name uniqueness validation

Returns:

  • (Boolean) 


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# File 'lib/acts_as_taggable_on/tag.rb', line 16

def validates_name_uniqueness?
  true
end