Rails Breadcrumb

application.html.erb

<%=  make_breadcrumb(yield :breadcrumb) %>

breadcrumb_helper.rb

module BreadcrumbHelper

    def add_breadcrumb(nombre,direccion = "#")
      content_for(:breadcrumb) { link_to(nombre,direccion) }
      content_for(:breadcrumb) {"///"} #separador para split
    end

    def make_breadcrumb(extencion)
      breadcrumb = [link_to('Inicio', root_path)]

      breadcrumb << begin
        extencion.empty? ?
          [link_to(controller.controller_name.humanize, url_for(controller: controller.controller_name) )]
          : extencion.split("///")
      end

      breadcrumb << [link_to(es(controller.action_name), "#", :class =>'no_link' )] if controller.action_name != 'index'
      
      breadcrumb.join(' &raquo; ').html_safe
    end

    def es(cadena)
      case cadena
        when "edit" then "editar"
        when "show" then "mostrar"
        when "new" then "nuevo"
      end
    end
    
end

recurso_breadcrumb_especial.rb

<% add_breadcrumb "Docentes", docentes_path  %>
<% add_breadcrumb "Docente", docente_path(params[:docente_id]) %>
<% add_breadcrumb "Experiencias", docente_path(params[:docente_id], anchor: 'experiencias') %>

recurso_normal.rb

# Sin necesidad de Helper