使用AngularJS实现模块间的共享

sharing between modules with AngularJS?

本文关键字：共享 模块 AngularJS 实现 使用      更新时间：2023-09-26

假设我有一个stuff模块，我想注入myApp配置:

angular.module('myApp', ['stuff']).
  config([function() {
  }]);

有两个子模块:

angular.module("stuff", ["stuff.thing1","stuff.thing2"]);

第一个:

angular.module('stuff.thing1', []).provider("$thing1", function(){
    var globalOptions = {};
    this.options = function(value){
        globalOptions = value;
    };
    this.$get = ['$http',function ($http) {
        function Thing1(opts) { 
            var self = this, options = this.options = angular.extend({}, globalOptions, opts);  
        }
        Thing1.prototype.getOptions = function(){
            console.log(this.options.apiKey);
        };
        return {
            thing1: function(opts){
                return new Thing1(opts);
            }
        };
    }];
});

第二个是相同的，为了方便示例:

angular.module('stuff.thing2', []).provider("$thing2", function(){
    var globalOptions = {};
    this.options = function(value){
        globalOptions = value;
    };
    this.$get = ['$http',function ($http) {
        function Thing2(opts) { 
            var self = this, options = this.options = angular.extend({}, globalOptions, opts);  
        }
        Thing2.prototype.getOptions = function(){
            console.log(this.options.apiKey);
        };
        return {
            thing2: function(opts){
                return new Thing2(opts);
            }
        };
    }];
});

你会注意到，你可以访问它们作为提供商来配置选项:

angular.module('myApp', ['stuff']).
  config(['$thing1Provider', '$thing2Provider', function($thing1Provider, $thing2Provider) {
    $thing1Provider.options({apiKey:'01234569abcdef'});
    $thing2Provider.options({apiKey:'01234569abcdef'});
  }]);

如果我们在一个控制器中，你可以覆盖每个作用域，如:

controller('AppController', ['$scope','$thing1', function($scope, $thing1) {    
  var thing1 = $thing1.thing1({apiKey:'3kcd894g6nslx83n11246'});  
}]).

但是如果它们总是共享相同的属性呢?如何在提供者之间共享内容?

angular.module('myApp', ['stuff']).config(['$stuff' function($stuff) {
  //No idea what I'm doing here, just trying to paint a picture.
  $stuff.options({apiKey:'01234569abcdef'});
}]);

是否可以注入$stuff并为$thing1和$thing2配置共享属性?

我如何访问$thing1和$thing2作为单个模块的扩展?

controller('AppController', ['$scope','$stuff', function($scope, $stuff) {
  //Again - no idea what I'm doing here, just trying to paint a picture.
  //$thing1 would now be overwrite $stuff.options config above.
  var thing1 = $stuff.$thing1.thing1({apiKey:'lkjn1324123l4kjn1dddd'});
  //No need to overwrite $stuff.options, will use whatever was configured above.
  var thing2 = $stuff.$thing2.thing2();  
  //Could I even change the default again for both if I wanted too?
  $stuff.options({apiKey:'uih2iu582b3idt31d2'});
}]).

注入一个共享这些属性的模块。

使用提供程序类覆盖属性或从任何作用域实例化它们:

angular.module("stuff.things", []).provider("$things", function(){
    var globalOptions = {};
    this.options = function(value){
        globalOptions = value;
    };
    this.$get = [, function () {
        function Things(opts) { 
            var self = this, options = this.options = angular.extend({}, globalOptions, opts);
        }
        Things.prototype.returnOptions = function(){
            return this.options;
        };
        return {
            things: function(opts){
                return new Things(opts);
            }
        };
    }];
});

秘笈:$things.things().returnOptions() 

angular.module('stuff.thing1', ['stuff.things']).provider("$thing1", function(){
    var globalOptions = {};
    this.options = function(value){
        globalOptions = value;
    };
    this.$get = ['$things', function ($things) {
        function Thing1(opts) {
            var self = this, options = this.options = angular.extend({}, $things.things().returnOptions(), globalOptions, opts);
        ...
        }
        return {
            thing1: function(opts){
                return new Thing1(opts);
            }
        };
    }];
});
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