ruby-on-rails - 我们如何以 DRY 的方式使用带有 angularjs 的 rails 路由？

Question

首先，我很抱歉我的英文和破代码......(这里的很多词来自谷歌翻译......所以，我害怕我无法让自己清楚......所以，我粘贴所有代码...)

在 Rails 中设置路线非常容易。但是当我们想把它变成angurjs时，它变得有点冗长......这种工作有没有“最佳实践”:

给定一些铁路路线资源:

resources :users
resources :photos
...
resources :topics

如何在 Angular 侧做到这一点？

这就是我的做法(在 CoffeeScript 中，使用 angular 1.1.4 ):

以 Rails 方式使用 RESTful 服务:

# angular/services/restful.js.coffee
# RESTful resource following Rails route's convention
# index:  GET  '/resource.json'
# save:   POST '/resource.json'
# get:    GET  '/resource/:id.json'
# update: PUT  '/resource/:id.json'
# edit:   GET  '/resource/:id/edit.json'
# new:    GET   just use get, id: 'new'
app.factory('RESTful', ['$resource',
  ($resource)->
    (resource_name) ->
      url = "/#{resource_name}/:id:format"
      defaults={format: '.json', id: '@id'}

      actions = {
        index:
          id: ''
          url: "/#{resource_name}:format"
          method: 'GET'
          isArray:false
        edit:
          url: "/#{resource_name}/:id/edit:format"
          method: 'GET'
        update:
          method: 'PUT'
        save:
          url: "/#{resource_name}:format"
          method: 'POST'
      }

      $resource url, defaults, actions
])

# index:  GET  '/parents/:parent_id/children.json'
# save:   POST '/parents/:parent_id/children.json'
# get:    GET  '/parents/:parent_id/children/:id.json'
# update: PUT  '/parents/:parent_id/children/:id.json'
# edit:   GET  '/parents/:parent_id/children/:id/edit.json'
# new:    GET   just use get, id: 'new'
app.factory('NESTful', ['$resource',
  ($resource)->
    (parents, children) ->
      # naive singularize
      parent = parents.replace(/s$/, '')
      url = "/#{parents}/:#{parent}_id/#{children}/:id:format"

      defaults={ format: '.json', id: '@id' }

      actions = {
        index:
          id: ''
          url: "/#{parents}/:#{parent}_id/#{children}:format"
          method: 'GET'
          isArray:false
        edit:
          url: "/#{parents}/:#{parent}_id/#{children}/:id/edit:format"
          method: 'GET'
        update:
          method: 'PUT'
        save:
          url: "/#{parents}/:#{parent}_id/#{children}:format"
          method: 'POST'
      }

      $resource url, defaults, actions
])

路线:

app.config(['$routeProvider', '$locationProvider', ($routeProvider, $locationProvider) ->
  $locationProvider.html5Mode(true)

  # general RESTful routes
  resource_list = ['users', 'photos', 'topics']
  for resource in resource_list
    # naive singularize
    singular = resource.replace(/s$/, "")
    captialize = singular.charAt(0).toUpperCase() + singular.slice(1)
    $routeProvider
      .when "/#{resource}",
          templateUrl: "/tp/#{resource}/index"
          controller: "#{captialize}IndexCtrl"
          resolve:
            index: ["#{captialize}Loader", (Loader)-> Loader('index')]
      .when "/#{resource}/new",
          templateUrl: "/tp/#{resource}/edit"
          controller: "#{captialize}NewCtrl"
          resolve:
            resource: ["#{captialize}Loader", (Loader)-> Loader('new')]
      .when "/#{resource}/:id",
          templateUrl: "/tp/#{resource}/show"
          controller: "#{captialize}ShowCtrl"
          resolve:
            resource: ["#{captialize}Loader", (Loader)-> Loader('show')]
      .when "/#{resource}/:id/edit",
          templateUrl: "/tp/#{resource}/edit"
          controller: "#{captialize}EditCtrl"
          resolve:
            resource: ["#{captialize}Loader", (Loader)-> Loader('edit')]

  # special routes
  $routeProvider
    .when '/',
        templateUrl: '/tp/pages/home'
        controller: 'PageCtrl'

    .otherwise({redirectTo: '/'})
])

Controller 应该 super 干净，然后我们可以专注于业务

app.controller 'UserShowCtrl', ['$scope', 'resource'
  ($scope, resource)->
    $scope.user = resource.user
]
app.controller 'UserIndexCtrl', ['$scope', 'index',
  ($scope, index) ->
    $scope.users = index.resource.users
    $scope.total_pages = index.pages.total_pages
    $scope.currentPage = index.pages.current_page

    getPage = (page)->
      index.resource.$index
        page: page
        (resource, headers)->
          $scope.users = resource.users

    $scope.$watch 'currentPage', (newval)->
      getPage(newval)
]

问题出在用于解析 obj 的加载器中:

app.factory('UserLoader', ['RESTful', '$route', '$q',
  (RESTful, $route, $q) ->
    (action)->
      model = 'users'
      delay = $q.defer()
      fetcher = RESTful(model)
      switch action
        when 'index'
          fetcher.index
            page: $route.current.params.page
            (resource, headers)->
              delay.resolve
                resource: resource
                pages: JSON.parse(headers('X-Pagination'))
            (resource)->
              delay.reject "Unable to fetch #{model} index"
        when 'show'
          fetcher.get
            id: $route.current.params.id
            (resource)->
              delay.resolve(resource)
            (resource)->
              delay.reject "Unable to fetch #{model} #{$route.current.params.id}"
        when 'edit'
          fetcher.edit
            id: $route.current.params.id
            (resource)->
              delay.resolve(resource)
            (resource)->
              delay.reject "Unable to fetch #{model} #{$route.current.params.id} edit"
        when 'new'
          fetcher.get
            id: 'new'
            (resource)->
              delay.resolve(resource)
            (resource)->
              delay.reject "Unable to fetch #{model} new"

      return delay.promise
])

这里有2个问题:
第一个问题是我必须复制 && 粘贴上面的加载器代码，然后 gsub('user', 'photo') 等...
(其实只是改了2个字，但我讨厌复制&&粘贴..)
我尝试将它移到一个不起作用的 for 循环中，但我不知道为什么......
另一个问题是如何以 DRY 方式设置嵌套资源

最后，感谢您的耐心等待，再次向您说声抱歉……
但是有任何解决方案、建议或最佳实践吗？
我做错了吗？

Answer 1

除了您对问题的描述非常复杂(大量代码)之外，我认为您错过了 REST API 概念的重点。

您正在将 Rails 后端资源(及其路由)与客户端路由混合。这是错误的恕我直言。您的前端应用程序路由不应跳过(遮蔽)REST 路由。
如果您正在获取 users资源(例如 GET /users/5.json )，您不应将客户端导航到 /tp/users/show .您的 REST 和客户端路由是两个独立的、独立的抽象。

您的客户端路由应该像

/
/userprofile
/dashboard
/articles/2013?page=4

坐在这些路由上的 Controller 应该使用您的资源服务从 REST API 获取所需的数据，如下所示:

angular.module('myApp').controller 'UserProfileController', ($scope, userResource) ->
  $scope.user = userResource.query({id: SOME_ID})

angular.module('myApp.resources').factory 'userResource', ($resource) ->
  params = {
    id: '@id'
    subItem: '@subItem'
    subItemId: '@subItemId'
  }

  actions = {
    query: {
      method: 'GET'
      params: {}
      isArray: true
    }
    ban: {
      method: 'POST'
      params: {banned: true}
    }
  }

  return $resource('/api-1.0/users/:id/:subItem/:subItemId', params, actions)