Class: Gretel::Crumbs

Inherits:
Object
  • Object
show all
Defined in:
lib/gretel/crumbs.rb

Class Method Summary collapse

Class Method Details

.all ⇒ Object 



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# File 'lib/gretel/crumbs.rb', line 11

def all
  @crumbs ||= {}
end

.crumb(name, &block) ⇒ Object 



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# File 'lib/gretel/crumbs.rb', line 15

def crumb(name, &block)
  all[name] = block
end

.get_crumb(name, object = nil) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/gretel/crumbs.rb', line 19

def get_crumb(name, object = nil)
  crumb = all[name]
  raise ArgumentError, "Breadcrumb :#{name} not found." unless crumb
  
  @object = object # share the object so we can call it from link() and parent()
  @parent = nil
  
  crumb.call(object)
  Gretel::Crumb.new(@links, @parent)
end

.layout(&block) ⇒ Object 



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# File 'lib/gretel/crumbs.rb', line 4

def layout(&block)
  # needs to be done here because Rails.application isn't set when this file is required
  self.class.send :include, Rails.application.routes.url_helpers
  
  instance_eval &block
end

.link(*args) ⇒ Object 



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# File 'lib/gretel/crumbs.rb', line 30

def link(*args)
  options = args.extract_options!
  text = args[0]
  url = args[1]
  
  text = text.call(@object) if text.is_a?(Proc)
  url = url.call(@object) if url.is_a?(Proc)
  
  @links ||= []
  @links << Gretel::Link.new(text, url, options)
  
  @links
end

.parent(name, object = nil) ⇒ Object 



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# File 'lib/gretel/crumbs.rb', line 44

def parent(name, object = nil)
  name = name.call(@object) if name.is_a?(Proc)
  object = object.call(@object) if object.is_a?(Proc)

  @parent = Gretel::Parent.new(name, object)
end