concerning(topic, &block) Instance Public methods Define a new concern and

gem_version() Class Public methods Returns the version of the currently loaded

<=>(zone) Instance Public methods Compare this time zone to the parameter

index_exists?(column_name, options = {}) Instance Public methods Checks to see

content_tag(name, content_or_options_with_block = nil, options = nil, escape = true, &block) Instance Public

beginning_of_day() Instance Public methods Returns a new

int4range(name, options = {}) Instance Public methods

build(*args, &block) Instance Public methods Alias for:

encode_with(coder) Instance Public methods

persisted?() Instance Public methods Returns true if the record is persisted