Question

我是Angular的新手。

// This is my main controller
app.controller('AppCtrl', ['$rootScope', '$scope', 'cfpLoadingBar', '$http',
function ($rootScope, $scope, cfpLoadingBar, $http) {

    cfpLoadingBar.start();

    $rootScope.$on('$stateChangeSuccess', function (event, toState, toParams, fromState, fromParams) {

        //stop loading bar on stateChangeSuccess
        event.targetScope.$watch("$viewContentLoaded", function () {

            // HERE I want to send request to API and on complete do
            // 1. Complete loadbar
            // 2. Write response to global var and use it from other controller
            $http.get(
              '/api/',
              {}
            ).then(function (response) {

                // Completing loadbar
                cfpLoadingBar.complete();

                $SOME_GLOBAL_VAR.api = response;


            });


        });

    });

}]);


// Controller 1
app.controller('Ctrl_1', ["$scope", "$http" function ($scope, $http) {
    $scope.param = 'get_data_1';

    When $SOME_GLOBAL_VAR.api
    console.log($SOME_GLOBAL_VAR.api);

}]);

我想对不同的控制器使用一个api请求。所以我想加载API，当它完成时 - 每个控制器都会渲染他的部分。现在我无法理解如何听取API加载完成？

Answer 1

您可以通过以下方式实现此目的

$http.get(
      '/api/',
      {}
).then(function (response) {

        // Completing loadbar
        cfpLoadingBar.complete();

        $rootScope.$emit("receivedApiUpdate", response);


});



angular.module("my_module")('controller1', ['$rootScope', function($rootScope) {
    $rootScope.$on('receivedApiUpdate',function(event, response){
        // Do your work
    });
}]);

angular.module("my_module")('controller2', ['$rootScope', function($rootScope) {
    $rootScope.$on('receivedApiUpdate',function(event, response){
        // Do your work
    });
}]);

angular.module("my_module")('controller3', ['$rootScope', function($rootScope) {
    $rootScope.$on('receivedApiUpdate',function(event, response){
        // Do your work
    });
}]);

Answer 2

您可以尝试提供服务并在您的控制器上使用您的服务。

https://docs.angularjs.org/guide/services

AngularJS：在GetJSON上完成使用其他控制器中的数据

2 个答案: