提供 ui-router 解析的资源，无需直接注入控制器 [英] Provide ui-router resolved resources without injecting directly into controller

问题描述

我正在开发一个大量使用 ui-router 的 angular 1.5 应用.

I'm working on an angular 1.5 app that makes heavy use of ui-router.

我们这样定义我们的状态:

We define our states like this:

$stateProvider
  .state('jobs', {
    url: '/jobs',
    template: '<ut-jobs></ut-jobs>',
});

请注意，此页面的模板是一个简单的角度指令，而不是带有单独控制器的 template 字符串(或 templateUrl).我们指令的控制器是内联定义的，如下所示:

Notice that the template for this page is a simple angular directive rather than a template string (or templateUrl) with a separate controller. Our directive's controllers are defined inline, like this:

angular.directive('utJobs', () => {
  return {
    templateUrl: 'jobs.html',
    controllerAs: 'jobs',
    controller: [() => {
      console.log('jobs directive loaded!');
    }],
  }
});

这让我们保持整洁，因为我们指令的控制器与指令定义很接近.

This lets us keep things nice and tidy, since our directive's controllers are close to the directive definition.

我们希望利用 ui-router 的 resolve 功能来帮助简化我们的资源获取.但是，由于我们的状态控制器没有保存在 $stateProvider.state 定义中，我一生都无法弄清楚如何访问 resolve 的结果(job 在上面的例子中.)是否有某种 $resolve 服务，我可以注入指令的控制器来访问解析的资源?我错过了一些明显的东西吗?还是 ui-router 不支持?

We would like to leverage ui-router's resolve feature to help simplify our resource fetching. However, since our state controllers aren't kept in $stateProvider.state definitions, I can't figure out for the life of me how to access the result of resolve (job in the above example.) Is there some kind of $resolve service that I could inject into the directive's controller to access the resolved resources? Am I missing something obvious? Or is ui-router not support this?

推荐答案

根据您的 UI-Router 版本，您有两个选项.

You have two options depending on your version of UI-Router.

ui-router 1.0.0-beta 允许路由组件，因此您的解析将直接映射到您的指令的范围绑定.

ui-router 1.0.0-beta allows for routed components, so your resolves would map directly with your directive's scope binding.

$stateProvider
  .state('jobs', {
    url: '/jobs',
    resolve: {
      jobs: (JobsService) => JobsService.getAll()
    }
    component: 'ut-jobs'
});

然后将解析属性绑定到您的 .directive:

Then bind the resolve property to your .directive:

angular.directive('utJobs', () => {
  return {
    templateUrl: 'jobs.html',
    scope: {
      jobs: '<'
    },
    controllerAs: 'jobs',
    controller: () => {
      // do what you will this.jobs
    },
  }
});

如果您没有使用 ui-router 1.0.0-beta

您必须在您的状态上创建一个控制器，并从您的解析中传递资源，然后将其传递到您的指令中.

If you are not using ui-router 1.0.0-beta

You will have to create a controller on your state and pass in the resource from your resolve, and then pass that into your directive.

$stateProvider
  .state('jobs', {
    url: '/jobs',,
    resolve: {
      jobs: (JobsService) => JobsService.getAll()
    },
    controller: function($scope, jobs) {
      $scope.jobs = jobs;
    },
    template: '<ut-jobs jobs="jobs"></ut-jobs>',
});

在这种情况下，$scope 上的 jobs 对象将传递给您的指令:

In this case, the jobs object on $scope is getting passed to your directive:

angular.directive('utJobs', () => {
  return {
    templateUrl: 'jobs.html',
    scope: {
      jobs: '<'
    },
    controllerAs: 'jobs',
    controller: [() => {
      // do what you will this.jobs
    }],
  }
});

笔记/阅读

• 根据您应用的状态，我建议升级 UI-Router (https://ui-router.github.io/blog/uirouter-1.0.0-beta.3/) 以允许组件路由.
• 我建议阅读 Angular 文档中的组件与指令(https://docs.angularjs.org/指南/组件).Angular 1.5 公开了首选的 .component 语法.
• 托德·莫托 (Todd Motto) 在主观方面写得很出色 (https://toddmotto.com/rewriting-angular-styleguide-angular-2).

Notes/Reading

• Depending on the state of your app, I would recommend upgrading UI-Router (https://ui-router.github.io/blog/uirouter-1.0.0-beta.3/) to allow for component routing.
• I would recommend reading about components vs directives in the Angular docs (https://docs.angularjs.org/guide/component). Angular 1.5 exposed the .component syntax which is preferred.
• Todd Motto has done great writing on the subjective (https://toddmotto.com/rewriting-angular-styleguide-angular-2).

这篇关于提供 ui-router 解析的资源，无需直接注入控制器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！