从另一个调用一个控制器 [英] Invoke one controller from another

问题描述

我是AngularJs的新手，所以请耐心等待。

I am a total newbie in AngularJs, so please be patient with me.

我有以下角度应用程序，其中包含两个控制器

I have the following angular App, which contains two controllers

(function () {
    angular.module("app-machines", ['ngFlatDatepicker'])
    .controller('mainController', ['$scope', mainController])
    .controller("machinesController", machinesController);;

    function mainController($scope) {
        $scope.datepickerConfig_From = {
            allowFuture: true,
            dateFormat: 'DD.MM.YYYY',
            minDate: moment.utc('2015-09-13'),
            maxDate: moment.utc('2015-09-17')
        };

        $scope.datepickerConfig_To = {
            allowFuture: true,
            dateFormat: 'DD.MM.YYYY',
            minDate: moment.utc('2015-09-13'),
            maxDate: moment.utc('2015-09-17')
        };

        $scope.date_from = "14.09.2015";
        $scope.date_to = "15.09.2015";

        $scope.change = function () {
            //somehow execute machinesController get function
        };

    }

    function machinesController($http) {
        var vm = this;
        vm.errorMessage = "";
        vm.machines = [];

        $http.get("/api/machine/2015-09-14_2015-09-16")
        .then(function (response) {
            //success
            angular.copy(response.data, vm.machines);
        }, function (error) {
            //failure
            vm.errorMessage = "Failed to load data:" + error;
        });

    }
})();

我的 machinesController 应该调用 GET 带参数的函数。这里的参数是2015-09-14，第二个是2015-09-16（现在它们是硬编码的）。

my machinesController is supposed to call a GET function with parameters. Here parameters are 2015-09-14 and second one is 2015-09-16 (for now they are hard coded).

我想要实现的是，那个我的主页上有两个输入控件，触发 $ scope.change 函数（位于第一个 mainController ）。在这里，我想将 date_from 和 date_to 的值传递给GET函数，以便我可以检索某些值。

What I would like to achieve is, that I have a two input controls on my main page, which trigger $scope.change function (located at the bottom of the first mainController). Here I would like to pass values of date_from and date_to to the GET function, so that I can retrieve certain values.

我能做什么（最后，如果什么都行不通）是将ode从 machinesController 复制到我的 mainController ，这将解决问题。

What I can do (in the end, if nothing works) is to copy the ode from machinesController into my mainController and that would solve the problem.

但是我想学习如何更好地使用它，因此我想学习如何以正确的方式（在这种情况下调用一个模块）来自另一个）。

However I would like to learn how to work with this a bit better, therefore I would like to learn how to do it the proper way (in this case calling one module from the other).

为了达到这个目的，我需要改变什么？

What do I need to change in order to achieve this?

编辑：

如上所述，我有机器控制器的原因是为了卸载json数据并将其显示给用户。所以最后在我的html代码中我有以下内容：

The reason why I have machinesController is, as was mentioned, to donwload the json data and show it to the user. So in the end in my html code I have the following:

    <div ng-controller="machinesController as vm" class="col-md-6 col-md-offset-3">
        <div class="text-danger" ng-show="vm.errorMessage"> {{ vm.errorMessage }}</div>
        <table class="table table-responsive table-striped">
            <tr ng-repeat="machine in vm.machines">
                <td> {{ machine.name }}</td>
            </tr>
        </table>
    </div>

显示带有机器名称的表格。

Which displays a table with machine names.

推荐答案

要负责下载数据，你应该使用工厂。

To takes care of downloading the data you should use a factory.

看看这个答案有关良好做法的更多详细信息。

Look at this answer for further details about good practices.

我修改了您的代码以使用工厂。

I modified your code to use a factory.

angular.module("app-machines", ['ngFlatDatepicker'])
    .factory('MachinesService', ['$http', MachinesService])
    .controller('mainController', ['$scope', 'MachinesService', mainController]);

function mainController($scope, MachinesService) {
    // date pickers config...

    $scope.date_from = "14.09.2015";
    $scope.date_to = "15.09.2015";

    $scope.change = function () {
        MachinesService.getMachines($scope.date_from, $scope.date_to).then(function (response) {
            vm.machines = response.data;
        }, function (error) {
            vm.errorMessage = "Failed to load data:" + error;
        });
    };

}

function MachinesService($http) {
    return {
        getMachines: getMachines
    };

    function getMachines(from, to) {
        return $http.get("/api/machine/" + from + "_" + to);
    }
}

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