Module: ActsAsTaggableOn::Utils

Defined in:
lib/acts_as_taggable_on/utils.rb

Class Method Summary collapse

Class Method Details

.active_record42? ⇒ Boolean 



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# File 'lib/acts_as_taggable_on/utils.rb', line 48

def active_record42?
  active_record4? && ::ActiveRecord::VERSION::MINOR >= 2
end

.active_record4? ⇒ Boolean 



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

def active_record4?
  ::ActiveRecord::VERSION::MAJOR == 4
end

.connection ⇒ Object

Use ActsAsTaggableOn::Tag connection



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# File 'lib/acts_as_taggable_on/utils.rb', line 5

def connection
  ActsAsTaggableOn::Tag.connection
end

.escape_like(str) ⇒ Object

escape _ and % characters in strings, since these are wildcards in SQL.



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# File 'lib/acts_as_taggable_on/utils.rb', line 57

def escape_like(str)
  str.gsub(/[!%_]/) { |x| '!' + x }
end

.like_operator ⇒ Object 



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# File 'lib/acts_as_taggable_on/utils.rb', line 52

def like_operator
  using_postgresql? ? 'ILIKE' : 'LIKE'
end

.postgresql_support_json? ⇒ Boolean 



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# File 'lib/acts_as_taggable_on/utils.rb', line 19

def postgresql_support_json?
  postgresql_version >= 9.2
end

.postgresql_version ⇒ Object 



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# File 'lib/acts_as_taggable_on/utils.rb', line 13

def postgresql_version
  if using_postgresql?
    connection.execute('SHOW SERVER_VERSION').first['server_version'].to_f
  end
end

.sha_prefix(string) ⇒ Object 



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# File 'lib/acts_as_taggable_on/utils.rb', line 40

def sha_prefix(string)
  Digest::SHA1.hexdigest("#{string}#{rand}")[0..6]
end

.supports_concurrency? ⇒ Boolean 



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# File 'lib/acts_as_taggable_on/utils.rb', line 36

def supports_concurrency?
  !using_sqlite?
end

.using_case_insensitive_collation? ⇒ Boolean 



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

def using_case_insensitive_collation?
  using_mysql? && connection.collation =~ /_ci\Z/
end

.using_mysql? ⇒ Boolean 



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# File 'lib/acts_as_taggable_on/utils.rb', line 27

def using_mysql?
  #We should probably use regex for mysql to support prehistoric adapters
  connection && connection.adapter_name == 'Mysql2'
end

.using_postgresql? ⇒ Boolean 



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# File 'lib/acts_as_taggable_on/utils.rb', line 9

def using_postgresql?
  connection && connection.adapter_name == 'PostgreSQL'
end

.using_sqlite? ⇒ Boolean 



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# File 'lib/acts_as_taggable_on/utils.rb', line 23

def using_sqlite?
  connection && connection.adapter_name == 'SQLite'
end