Question

我使用带有MEAN堆栈的Restangular，我的api在localhost：3000上运行。

我想增加观点＆＃39;每次加载页面。目前我正在获取对象并将其设置为1000之类的值，这样可以正常工作，但是当我尝试增加它时，它无法正常工作。

angular.module('clientApp').controller('MovieViewCtrl', function ($scope, $routeParams, Movie) {
    $scope.$on('$viewContentLoaded', function() {
        var passReq = Movie.one($routeParams.id);
        passReq.views = 1000;
        passReq.put();
    });
    $scope.viewMovie = true;
    $scope.movie = Movie.one($routeParams.id).get().$object;
});

^^这是有效的

angular.module('clientApp').controller('MovieViewCtrl', function ($scope, $routeParams, Movie) {
    $scope.$on('$viewContentLoaded', function() {
        var passReq = Movie.one($routeParams.id);
        passReq.views++;
        passReq.put();
    });
    $scope.viewMovie = true;
    $scope.movie = Movie.one($routeParams.id).get().$object;
});

但这不是

Answer 1

可能是因为passReq.views未定义，因此您无法增加未定义的变量，请执行以下操作：

angular.module('clientApp').controller('MovieViewCtrl', function ($scope, $routeParams, Movie) {
    $scope.$on('$viewContentLoaded', function() {
        var passReq = Movie.one($routeParams.id);
        if (passReq.views)        
           passReq.views++;
        else
           passReq.views = 1;
        passReq.put();
    });
    $scope.viewMovie = true;
    $scope.movie = Movie.one($routeParams.id).get().$object;
});

Answer 2

有时MEAN无法处理我遇到的增量运算符。所以你可以尝试

if(passReq.views)
    passReq.views += 1;

Restangular - 增加和更新值

2 个答案: