如何从/:id 重定向到/:friendly_id [英] How to redirect from /:id to /:friendly_id

问题描述

当有人尝试使用旧的 /:id URL 而不是首选的 /:friendly_id 链接浏览页面时，是否可以强制进行 301 重定向?

Is is possible to force a 301 redirect when someone attempts to browse to a page using the old /:id URL, rather than than the preferred /:friendly_id link?

显然，此类重定向有助于告诉 Google 您已更新链接...因此它停止显示旧的非友好链接.

Apparently such redirections help to tell Google that you have updated the link.. so it stops displaying the old non-friendly link.

推荐答案

使用最新版本的 friendly_id (5.0.3 at撰写此答案的时间)和 Rails 4，我在控制器中执行此操作:

With the latest version of friendly_id (5.0.3 at the time of writing this answer) and Rails 4, I do this in the controller:

class ItemsController < ApplicationController
  before_action :set_item, only: [:show, :edit, :update, :destroy]

  ...

  private

  def set_item
    @item = Item.friendly.find(params[:id])
    redirect_to action: action_name, id: @item.friendly_id, status: 301 unless @item.friendly_id == params[:id]
  end
end

以下是 redirect_to 行的描述，逐条分解:

Here's a description of the redirect_to line, broken down piece by piece:

• action: action_name 保留您要连接到的操作(可以根据现有的 before_action 显示、编辑、更新或销毁)，以便如果您正在访问 /items/1/edit，您将被重定向到 /items/pretty-url/edit
• id: @item.friendly_id 确保您被重定向到的 URL 是漂亮的 URL
• status: 301 将重定向设置为 301 的状态，用于 SEO
• 除非@item.friendly_id == params[:id] 确保我们不会重定向通过其漂亮 URL 访问 @item 的人

• action: action_name retains the action that you're connecting to (which can be show, edit, update, or destroy based on the before_action that's in place) so that if you're accessing /items/1/edit you will be redirected to /items/pretty-url/edit
• id: @item.friendly_id ensures that the URL you're being redirected to is the pretty URL
• status: 301 sets the redirect to the status of 301, for SEO
• unless @item.friendly_id == params[:id] makes sure that we're not redirecting people who access @item through its pretty URL

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