将参数传递给解析函数

Passing parameters to a resolve function

本文关键字：函数 参数传递      更新时间：2024-02-27

我很难弄清楚如何将参数传递给作为ngRoute解析一部分的函数。

就我而言，我用代币做事情。这些令牌是键入的，因此您不能使用相同的令牌来确认、发送电子邮件和重新设置密码。以下是我的路线定义：

.when("/confirm/:token", {
    controller: "confirmEmailController",
    templateUrl: "/app/views/confirmEmail.html",
    resolve: {
        tokenStatus: getTokenStatus
    }
})
.when("/reset/:token", {
    controller: "resetPasswordController",
    templateUrl: "/app/views/resetPasswordEmail.html",
    resolve: {
        tokenStatus: getTokenStatus
    }
})

以下是为它们调用的getTokenStatus函数：

var getTokenStatus = ["$q", "$route", "tokenService", function($q, $route, tokenService)
{    
    var deferred = $q.defer();
    var tokenType = ???? //<-- how do I pass this?
    tokenService
        .getTokenStatus($route.current.params.token, tokenType)
        .success(function(response)
        {                    
            deferred.resolve(true);
        })
        .error(function()
        {
            deferred.resolve(false);
        });
    return deferred.promise;
}];

问题是，为了避免代码重复，我需要以某种方式传递代码中标记的令牌类型的值。我怎么能那样做？

在过去的两个小时里，我一直在处理这个问题，但似乎无法解决。

1。您可以尝试将令牌类型包括在路由中

.when("/:tokenType/:token", {
    controller: "confirmEmailController",
    templateUrl: "/app/views/confirmEmail.html",
    resolve: {
        tokenStatus: getTokenStatus
    }
})
.when("/:tokenType/:token", {
    controller: "resetPasswordController",
    templateUrl: "/app/views/resetPasswordEmail.html",
    resolve: {
        tokenStatus: getTokenStatus
    }
})

然后从$route.current.params.tokenType获取。但这不是一个干净的解决方案——你应该检查你的URL是否有效。

2.您可以使用函数包装

$routeProvider.when("/confirm/:token", {
    controller: "confirmEmailController",
    templateUrl: "/app/views/confirmEmail.html",
    resolve: {
        tokenStatus: getTokenStatus("confirm")
    }
})
.when("/reset/:token", {
    controller: "resetPasswordController",
    templateUrl: "/app/views/resetPasswordEmail.html",
    resolve: {
        tokenStatus: getTokenStatus("reset")
    }
});
var getTokenStatus = function(tokenType) {
    return ["$q", "$route", "tokenService", function($q, $route, tokenService) {
        var deferred = $q.defer();
        tokenService
            .getTokenStatus($route.current.params.token, tokenType)
            .success(function(response)
            {                    
                deferred.resolve(true);
            })
            .error(function()
            {
                deferred.resolve(false);
            });
        return deferred.promise;
    }];
};

3.您可以将获取令牌状态逻辑转移到单独的服务

$routeProvider.when("/confirm/:token", {
    controller: "confirmEmailController",
    templateUrl: "/app/views/confirmEmail.html",
    resolve: {
        tokenStatus: ['tokenStatusGetterService', function(tokenStatusGetterService){
            return tokenStatusGetterService("confirm");
        }]
    }
})
.when("/reset/:token", {
    controller: "resetPasswordController",
    templateUrl: "/app/views/resetPasswordEmail.html",
    resolve: {
        tokenStatus: ['tokenStatusGetterService', function(tokenStatusGetterService){
            return tokenStatusGetterService("reset");
        }]
    }
});
//...
.service('tokenStatusGetterService', ["$q", "$route", "tokenService", function($q, $route, tokenService) {
    return function(tokenType) {
        var deferred = $q.defer();
        tokenService
            .getTokenStatus($route.current.params.token, tokenType)
            .success(function(response)
            {                    
                deferred.resolve(true);
            })
            .error(function()
            {
                deferred.resolve(false);
            });
        return deferred.promise;
    };
}]);

一种方法是在getTokenStatus服务上放置一个函数。这是一个简化的示例，但它展示了如何将参数传递给resolve函数。

app.factory('getTokenStatus',['$q', '$timeout', '$route', function($q, $timeout, $route){
  this.action = function(tokenType) {
    var defer = $q.defer();
    $timeout(function(){
      var res = {
        path: $route.current.params.token,
        tokenType: tokenType
      }
      defer.resolve(res);
    },1000);
    return defer.promise;
  }
  return this;
}]);

并从您的解析对象调用它：

app.config(function($routeProvider){
  $routeProvider
  .when("/123/:token", {
    template: "<h1>hello</h1>",
    controller: 'testCtrl',
    resolve: {
      tokenStatus: function(getTokenStatus) {
        return getTokenStatus.action('firstToken').then(function(res){
          console.log(res);
        });
      }
    }
})

这是一个plnkr

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