关于gretel gem的解释？

Question

Rails 4.0 + ruby​​ 2.0.0 + gretel

配置/ breadcrumbs.rb：

# Root crumb
crumb :root do
  link "Home", root_path
end

# Issue list
crumb :issues do
  link "All issues", issues_path
end

# Issue
crumb :issue do |issue|
  link issue.title, issue
  parent :issues
end

请任何人解释一下是什么：root，Home，root_path？

application.html.erb

<%= breadcrumbs pretext: "You are here: ",
                separator: " &rsaquo; " %>

_user_listing.html.erb

<% breadcrumb :users, @users %>

但是我收到错误“面包屑：未找到用户。”

Answer 1

:root和root_path是指向您网站的根路径/的默认Rails项。 Home是该链接的文字。