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module Workarea
module Navigation
class Breadcrumbs
include Enumerable
attr_reader :navigable, :last, :taxon_ids
delegate :each, :length, :blank?, :present?, :[], to: :collection
def self.from_global_id(via, last: nil)
navigable = GlobalID::Locator.locate(via)
new(navigable, last: last)
end
def initialize(navigable, last: nil)
@navigable = navigable
@last = Taxon.new(name: last) if last.present?
end
def to_global_id
return nil unless navigable.present?
navigable.to_global_id.to_param
end
def last
@last || breadcrumb_taxons.last
end
# Whether this link is selected in these breadcrumbs.
# Used to determine whether we should add a selected class when rendering
# navigation links.
#
# @param [Workarea::Navigation::Taxon]
# @return [Boolean]
#
def selected?(taxon)
map(&:id).map(&:to_s).include?(taxon.id.to_s)
end
def join(sep = ' ')
collection.map(&:name).join(sep)
end
def collection
@collection ||= if last != breadcrumb_taxons.last
breadcrumb_taxons + [last]
else
breadcrumb_taxons
end
end
private
def breadcrumb_taxons
navigable.try(:taxon).try(:ancestors_and_self) || []
end
end
end
end
Version data entries
34 entries across 34 versions & 1 rubygems