问题
I have upgraded Refinery CMS to the newest version (2.1.0), where there is a new approach in rendering the navigation menu :
(in partial _header.html.erb)
<%= Refinery::Pages::MenuPresenter.new(refinery_menu_pages, self).to_html %>
The older version of the same partial :
<%= render(:partial => "/refinery/menu", :locals => {
:dom_id => 'menu',
:css => 'menu'
}) %>
How could I add bootstrap styles to the navbar using MenuPresenter?
回答1:
It can be done, but the solution is not pretty because the Menu Presenter in Refinery 2.1 doesn't support all the right CSS options out of the box. But with a bit of perseverance, this is roughly what to do:
Firstly, create a new blank file here: config/initializers/refinery/monkey_patch_menu_presenter.rb
In this patch file, paste in the contents of this updated version of the menu presenter (published October 2013): menu_presenter.rb
Next, based on the instructions in section 5 of the menu presenter guide, in your app/helpers/application_helper.rb file, add a new method called navigation_menu:
def navigation_menu
presenter = Refinery::Pages::MenuPresenter.new(refinery_menu_pages, self)
presenter.css = "navbar-inner"
presenter.menu_tag = :div
presenter.list_tag_css = "nav"
presenter.selected_css = "active"
presenter.first_css = ""
presenter.last_css = ""
presenter.max_depth = 0 # prevents dropdown menus, which don't render correctly
presenter
end
Finally, in your app/views/refinery/_header.html.erb file (use $ bundle exec rake refinery:override view=refinery/_header if it doesn't exist), replace the call for:
<%= Refinery::Pages::MenuPresenter.new(refinery_menu_pages, self).to_html %>
with:
<div class="navbar">
<%= navigation_menu.to_html %>
</div>
Ensure that you have the loaded the Bootstrap CSS/JS files and have wrapped the whole page in a <div class="container"> element. Then restart your application for the patch to take affect and hopefully you'll see a familiar bootstrap navigation bar.
Good luck!
Martyn.
回答2:
Here a version of above menu_presenter.rb that renders sub-menus as well (This if for Bootstrap 3, RefineryCMS 2.1.1):
require 'active_support/core_ext/string'
require 'active_support/configurable'
require 'action_view/helpers/tag_helper'
require 'action_view/helpers/url_helper'
module Refinery
module Pages
class MenuPresenter
include ActionView::Helpers::TagHelper
include ActionView::Helpers::UrlHelper
include ActiveSupport::Configurable
config_accessor :roots, :menu_tag, :list_tag, :list_item_tag, :css, :dom_id,
:max_depth, :selected_css, :first_css, :last_css, :list_tag_css,
:link_tag_css
self.dom_id = 'menu'
self.css = "collapse navbar-collapse"
self.menu_tag = :div
self.list_tag = :ul
self.list_item_tag = :li
self.selected_css = 'active'
self.first_css = :first
self.last_css = :last
self.list_tag_css = "nav navbar-nav"
def roots
config.roots.presence || collection.roots
end
attr_accessor :context, :collection
delegate :output_buffer, :output_buffer=, :to => :context
def initialize(collection, context)
@collection = collection
@context = context
end
def to_html
render_menu(roots) if roots.present?
end
private
def render_menu(items)
content_tag(menu_tag, :id => dom_id, :class => css) do
render_menu_items(items)
end
end
def render_menu_items(menu_items)
if menu_items.present?
content_tag(list_tag, :class => list_tag_css) do
menu_items.each_with_index.inject(ActiveSupport::SafeBuffer.new) do |buffer, (item, index)|
buffer << render_menu_item(item, index)
end
end
end
end
def render_menu_items_children(menu_items)
if menu_items.present?
content_tag(list_tag, :class => 'dropdown-menu') do
menu_items.each_with_index.inject(ActiveSupport::SafeBuffer.new) do |buffer, (item, index)|
buffer << render_menu_item(item, index)
end
end
end
end
def render_menu_item_link_dropdown(menu_item)
link_to( menu_item.title, context.refinery.url_for(menu_item.url), class: "dropdown-toggle", data: {toggle:"dropdown", target: "#"})
end
def render_menu_item_link(menu_item)
link_to(menu_item.title, context.refinery.url_for(menu_item.url), :class => link_tag_css)
end
def render_menu_item(menu_item, index)
content_tag(list_item_tag, :class => menu_item_css(menu_item, index)) do
buffer = ActiveSupport::SafeBuffer.new
# Check for sub menu
menu_item_children(menu_item).empty? ? buffer << render_menu_item_link(menu_item) : buffer << render_menu_item_link_dropdown(menu_item)
buffer << render_menu_items_children(menu_item_children(menu_item))
buffer
end
end
# Determines whether any item underneath the supplied item is the current item according to rails.
# Just calls selected_item? for each descendant of the supplied item
# unless it first quickly determines that there are no descendants.
def descendant_item_selected?(item)
item.has_children? && item.descendants.any?(&method(:selected_item?))
end
def selected_item_or_descendant_item_selected?(item)
selected_item?(item) || descendant_item_selected?(item)
end
# Determine whether the supplied item is the currently open item according to Refinery.
def selected_item?(item)
path = context.request.path
path = path.force_encoding('utf-8') if path.respond_to?(:force_encoding)
# Ensure we match the path without the locale, if present.
if %r{^/#{::I18n.locale}/} === path
path = path.split(%r{^/#{::I18n.locale}}).last.presence || "/"
end
# First try to match against a "menu match" value, if available.
return true if item.try(:menu_match).present? && path =~ Regexp.new(item.menu_match)
# Find the first url that is a string.
url = [item.url]
url << ['', item.url[:path]].compact.flatten.join('/') if item.url.respond_to?(:keys)
url = url.last.match(%r{^/#{::I18n.locale.to_s}(/.*)}) ? $1 : url.detect{|u| u.is_a?(String)}
# Now use all possible vectors to try to find a valid match
[path, URI.decode(path)].include?(url) || path == "/#{item.original_id}"
end
def menu_item_css(menu_item, index)
css = []
css << selected_css if selected_item_or_descendant_item_selected?(menu_item)
css << "dropdown" unless menu_item_children(menu_item).empty?
css << first_css if index == 0
css << last_css if index == menu_item.shown_siblings.length
css.reject(&:blank?).presence
end
def menu_item_children(menu_item)
within_max_depth?(menu_item) ? menu_item.children : []
end
def within_max_depth?(menu_item)
!max_depth || menu_item.depth < max_depth
end
end
end
end
来源：https://stackoverflow.com/questions/19423796/refinerycms-apply-bootstrap-styles-to-navigation-menu