Javascript 使用ngResource解决服务中的业务处理
我有一个AngularJs应用程序，它使用组件和几个模块。我创建了一个plunker示例来说明我的问题 我有我的NavbarComponent，我在其中声明了我的控制器，我在其中注入了名为NavbarService的服务。 在NavbarService中，我注入一个工厂资源来进行Rest调用，一旦调用完成，我将尝试在将响应返回控制器之前对其进行一些处理，在本例中，我只对其应用一个简单的过滤器，但它不起作用。如果我省略了我的处理，只返回类别，代码就会工作，您可以可视化一个包含两个类别的列表 我可以在控制器中进行处理，但这是一种不好的做法，因为我认为应该在服务中进行处理，其次，由于这是一种异步响应，我必须这样做才能使其工作，这真的很难看：Javascript 使用ngResource解决服务中的业务处理,javascript,angularjs,angular-promise,ngresource,Javascript,Angularjs,Angular Promise,Ngresource,我有一个AngularJs应用程序，它使用组件和几个模块。我创建了一个plunker示例来说明我的问题 我有我的NavbarComponent，我在其中声明了我的控制器，我在其中注入了名为NavbarService的服务。 在NavbarService中，我注入一个工厂资源来进行Rest调用，一旦调用完成，我将尝试在将响应返回控制器之前对其进行一些处理，在本例中，我只对其应用一个简单的过滤器，但它不起作用。如果我省略了我的处理，只返回类别，代码就会工作，您可以可视化一个包含两个类别的列表 我可以
navbarService.getCategories().$promise.then(function (response) {
console.log("controller", response[0].category);
vm.categories = categoryFilter(response[0].category);
}, function (error) {
console.log("an error occured");
});
有人能给我指点迷津吗，我没有办法了。谢谢你你的过滤器应该是这样的，它应该在$resource query的transformResponse中调用，而不是在service中调用，我希望这会对你有所帮助
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
'use strict';
angular.module('navbar')
.service('navbarService', [ 'categoryResourceService', function (categoryResourceService) {
var vm = this;
vm.getCategories = function(){
vm.categories = categoryResourceService.query(function(response){
console.log("[NavbarService] response:", response);
}, function(error){
console.log("[NavbarService] error:", error);
});
return vm.categories;
}
}]);
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
您的过滤器应该是这样的，它应该在$resource query的transformResponse中调用，而不是在service中调用，我希望这将对您有所帮助
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
'use strict';
angular.module('navbar')
.service('navbarService', [ 'categoryResourceService', function (categoryResourceService) {
var vm = this;
vm.getCategories = function(){
vm.categories = categoryResourceService.query(function(response){
console.log("[NavbarService] response:", response);
}, function(error){
console.log("[NavbarService] error:", error);
});
return vm.categories;
}
}]);
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
另一种简单的方法是像这样从组件向服务传递回调函数
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
另一种简单的方法是像这样从组件向服务传递回调函数
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
angular.module('shared').factory('categoryResourceService',
['$resource','categoryFilter', function($resource, categoryFilter) {
var provider = "categories.json";
var params = {
id: '@id'
};
return $resource(provider, params, {
query: {
isArray: true,
method: 'GET',
params: {},
transformResponse: function(categories) {
var results = categoryFilter(angular.fromJson(categories));
console.log("[categoryResourceService] filtered response:", results);
return results;
}
}
});
}]);
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
vm.categories = navbarService.getCategories();
}]
});
'use strict';
angular.module('navbar').component('appNavbar', {
templateUrl: "navbar.template.html",
controller: [ 'navbarService', function appNavbarController(navbarService) {
var vm = this;
navbarService.getCategories(function(data){
// this will be called when service will get the response and filter function has filtered the response
vm.categories = data;
});
}]
});
'use strict';
angular.module('navbar').service('navbarService', ['categoryResourceService', 'categoryFilter', function(categoryResourceService, categoryFilter) {
var vm = this;
vm.getCategories = function(callback) {
categoryResourceService.query(function(response) {
console.log("[NavbarService] response:", response);
callback(categoryFilter(response));
}, function(error) {
console.log("[NavbarService] error:", error);
});
//return vm.categories;
}
}]);
'use strict';
angular.module('navbar').filter('category', function() {
return function(categories) {
var categoryIds = ['World'];
var result = [];
angular.forEach(categoryIds, function (categoryId) {
angular.forEach(categories, function (category) {
if (category.name == categoryId) {
console.log("Match");
result.push(category);
}
});
});
return result;
};
});
您正在getCatagories函数中声明一个局部变量，在筛选器中传递该变量时无法访问该局部变量function@GhulamMohayudin你能再解释一下吗？我看不出将categories变量传递给CategorityFilter的问题，因为它们处于同一级别，此外，您可以在服务中直接复制粘贴CategoryFilter中的代码，但它仍然无法工作。好的，让我为您添加一个答案you@GhulamMohayudin谢谢，您在getCatagories函数中声明了一个局部变量，在筛选器中传递该变量时无法访问function@GhulamMohayudin你能再解释一下吗？我没有发现将categories变量传递给categorityfilter的问题，因为它们处于同一级别，而且您可以在服务中直接复制粘贴categorityfilter中的代码，但仍然无法工作。好的，让我为其添加一个答案you@GhulamMohayudin谢谢你它不起作用，我用你的代码更新了plunker：（您可以在控制台中看到，过滤后的响应是一个空数组，因为它试图在从服务器获取响应之前对响应应用过滤器，这真的很奇怪，因为处理是在成功回调中。Habchi请使用此代码，如果您遇到任何问题，请告诉我。它不起作用，我用您的代码更新了plunker：（您可以在控制台中看到，筛选后的响应是一个空数组，因为它在从服务器获取响应之前尝试对响应应用筛选器，这真的很奇怪，因为处理是在成功回调中。请使用此代码，如果遇到任何问题，请告诉我