Clouds of may

0%

rails 第四天

Veröffentlicht am Bearbeitet am

##在rails 4.1.5 里动态设置路由

需要动态获取数据路由相关数据来动态设置路由，有同学指出用路由分析库 点我,看上去太复杂了，自己理解为模块设置路由，每次保存前重启应该就可以。

routename 为路由名称

###table:

1
2
3
4
5
6
7
8
9
10
create_table "singlepages", primary_key: "sid", force: true do |t|
    t.string   "title",          limit: 200,        null: false
    t.text     "description",                       null: false
    t.text     "content",        limit: 2147483647, null: false
    t.string   "keywords",       limit: 200,        null: false
    t.integer  "sort",                              null: false
    t.datetime "created_at",                        null: false
    t.datetime "updated_at",                        null: false
    t.string   "routename",      limit: 250,        null: false
end

###routes.rb

1
2
resources :singlepages
get '/company', to: 'singlepages#show', sid: 1

###singelpage_controller.rb

1
2
3
4
5
6
7
8
9
10
class SinglepagesController < ApplicationController
  def index
    @singlepages = Singlepage.order("sid DESC").page(params[:page]).per(5)
    @title = 'singlepage manage'
  end
  def show
    @singlepage = Singlepage.find_by_sid(params[:sid])
    redirect_to not_found_path unless @singlepage
  end
end

###model/singlepage.rb

每次保存前重启路由器

1
2
3
4
5
6
class Singlepage < ActiveRecord::Base
  after_save :reload_routes
  def reload_routes
    DynamicRouter.reload
  end
end

###model/dynamic_router.rb

动态路由,包括加载和重启

1
2
3
4
5
6
7
8
9
10
11
12
13
class DynamicRouter
  def self.load
    ComingSoon.application.routes.draw do
      Singlepage.all.each do |pg|
        puts "Routing #{pg.name}"
        get "/#{pg.name}", :to => "pages#show", defaults: { id: pg.id }
      end
    end
  end
  def self.reload
    ComingSoon.application.routes_reloader.reload!
  end
end

###config/routes.rb

在路由配置文件里加载动态路由模块

1
2
3
4
5
Rails.application.routes.draw do
  root 'home#index'
  get 'not_found' => 'singlepages#not_found'
  DynamicRouter.load
end

OK。

文章来源:Creating Dynamic Routes at runtime in Rails 4