[英]AngularJS services and promises best practice
I have an AngularJS application where I have service
s that calls $http
resource and returns a promise
that I resolve in my controller. 我有一个AngularJS应用程序,我有
service
s调用$http
资源并返回我在控制器中解析的promise
。 Here's a sample of what I'm doing: 以下是我正在做的一个示例:
app.service('Blog', function($http, $q) {
var deferred = $q.defer();
$http.get('http://blog.com/sampleblog')
.then(function(res) {
// data massaging stuffs
return deferred.resolve(res.data);
}, function(err) {
// may be some error message checking and beautifying error message
return deferred.reject(err);
});
// chain if further more HTTP calls
return deferred.promise;
});
But I could simply do the following as well: 但我也可以简单地做以下事情:
app.service('Blog', function($http) {
return $http.get('http://blog.com/sampleblog');
});
And then do the validation, error beautifying, chaining promises, etc. at the controller
level. 然后在
controller
级别进行验证,错误美化,链接承诺等。
My question is : Which is considered as 'best practice', if any, in terms of code resiliency and flexibility? 我的问题是:在代码弹性和灵活性方面,哪个被认为是“最佳实践”? Or is there a better way to do it completely different than this ?
或者有更好的方法来完成与此完全不同的方式吗?
As per the concept behind MVC, controller should decide what to do with the promise. 根据MVC背后的概念,控制器应该决定如何处理承诺。
The service should initiate the promise. 该服务应该发起承诺。
app.service('Blog', function($http) {
return $http.get('http://blog.com/sampleblog');
});
And the controller should decide what to do when resolved. 并且控制器应该在解决时决定做什么。
$scope.response = Blog;
$scope.response.then(function(response) {
DataProcessor.processData(response.data)
})
.error(function(error){
ErrorHandler.handle(error);
})
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