javascript - 在页面加载之前加载数据 AngularJS 和 NodeJS

Question

我是 AngularJS 和 NodeJS 的新手，我有一个应用程序，我想从 mysql 数据库加载一些数据并通过 Node 服务器和 Angular 框架加载该数据，我的问题是，如何加载数据在加载之前将其显示在页面中？我正在尝试，但总是从 json var 中得到未定义的结果。

这是我的代码:

var app = angular.module('pedidos',[]);
app.service('adminPedidos',function($http){
    this.getAll = function(){
        var data =[];
        var req = {
            method: 'GET',
            url: 'http://localhost:3000/all',
        };
        return $http(req).then(function(response, status, headers, config) {
            return response;
        }).error(function(response, status, headers, config) {
            alert(response+" "+status);
        });
    };
});

并且 Controller 有以下句子:

app.controller('Main'['$scope','$http','adminPedidos',function($scope,$http,$adminPedidos){
    this.json = [];
    this.json = $adminPedidos.json;
    console.log(this.json);
}]);

另外在 html 中我有这个:

<section class="container" ng-controller="Main as controller">
    <section ng-repeat="items in controller.json" class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
        <div data-id="{{items.id}}">
            <span class="col-lg-3 col-md-3 col-sm-6 col-xs-12" name="name">{{items.name}}</span>
            <span class="col-lg-3 col-md-3 col-sm-6 col-xs-12" name="link"><a href="{{item.link}}">{{items.link}}</a></span>
            <span class="col-lg-2 col-md-2 col-sm-6 col-xs-12" name="price">{{items.price}}</span>
            <span class="col-lg-1 col-md-1 col-sm-6 col-xs-12" name="quantity">{{items.quantity}}</span>
        </div>
        <div class="col-lg-offset-1 col-md-offset-1 col-lg-1 col-md-2 col-sm-6 col-xs-6"><button id="edit" class="btn btn-warning">Editar</button></div>
        <div class="col-lg-1 col-md-2 col-sm-6 col-xs-6"><button id="delete" class="btn btn-danger">Borrar</button></div>
    </section>
</section>

Answer 1

服务

angular.module('pedidos').factory('adminPedidos', ['$http', function ($http) {
  return {
      getAll: function () {
        return $http.get('all'); // or change all to http://localhost:3000/all
      }
   };
}]); 

Controller

angular.module('pedidos').controller('Main'['$scope', 'adminPedidos', function ($scope, adminPedidos) {
        adminPedidos.getAll().success(function (data) {
           $scope.items = data;
        });
}]);

html

<section class="container" ng-controller="Main">
<section ng-repeat="item in items" class="col-lg-12 col-md-12 col-sm-12 col-xs-12">
    <div data-id="{{item.id}}">
        <span class="col-lg-3 col-md-3 col-sm-6 col-xs-12" name="name">{{item.name}}</span>
        <span class="col-lg-3 col-md-3 col-sm-6 col-xs-12" name="link"><a href="{{item.link}}">{{item.link}}</a></span>
        <span class="col-lg-2 col-md-2 col-sm-6 col-xs-12" name="price">{{item.price}}</span>
        <span class="col-lg-1 col-md-1 col-sm-6 col-xs-12" name="quantity">{{item.quantity}}</span>
    </div>
    <div class="col-lg-offset-1 col-md-offset-1 col-lg-1 col-md-2 col-sm-6 col-xs-6"><button id="edit" class="btn btn-warning">Editar</button></div>
    <div class="col-lg-1 col-md-2 col-sm-6 col-xs-6"><button id="delete" class="btn btn-danger">Borrar</button></div>
</section>