Question

我是angularjs的新手，我正在做基本演示，因为我使用php和angularjs服务将数据插入数据库并将其传递给控制器，数据插入数据库但是在控制台日志中出现错误。任何人都可以帮我解决这个错误吗？

这是我的app.js

var app = angular.module('myApp', [])
//controller
app.controller("myController",['$scope','StringServices', function($scope,StringServices){
    $scope.User= {};
    $scope.insert = function(User){
        StringServices.insertString($scope.User, function(response){
            if(response.FLAG === "_SUCCESS"){
                console.log('Success');
            }
            else{
                console.log('Error');
            }
        }).error(function(error){
            console.error(error);
        }); 
    }
}])
//services

app.factory('StringServices', function($http){
    return {
        insertString: function(User){
            var data = {name: User.name};

            $http.post('http://localhost/anjali_services/server/insert.php',data)
            .success(function(response){
                return response;
            });
        }
    };
});

的index.html

<table>
    <tr>
        <td>Your Name</td>
        <td><input type= "text" ng-model="User.name"></td>
    </tr>
    <tr>
        <td></td>
        <td><input type="button" ng-click="insert(User)" value="Insert"></td>
    </tr>
</table>

insert.php

<?php 
    $db = new PDO("mysql:host=localhost;dbname=anjali;port=3306","root","");
    $data = json_decode(file_get_contents("php://input"));
    $name = $data->name;
    $resp = array();
    $q = "INSERT INTO udata (name) VALUES (:name)";
    $query = $db->prepare($q);
    $execute = $query->execute(array(
        ":name" => $name
    ));
    if($execute == true){
        $resp['FLAG'] = "_SUCCESS";
        print json_encode($resp);
    }else{
        echo "ERROR";
    }

?>

我收到此错误

See this screenshot

Answer 1

我必须说我无法立即找出问题的根源，但我建议您至少从服务中返回$http承诺并使用then/catch处理结果。至少我发现这更容易阅读和阅读了解发生了什么。

无论如何，以这种方式修改你的例子似乎工作得很好。无论如何，反对模拟REST服务。

<强> HTML

<body ng-controller="myController as vm">
  Your Name:
  <input type= "text" ng-model="User.name">
  <input type="button" ng-click="insert(User)" value="Insert">
</body>

<强>的JavaScript

var app = angular.module('myApp', [])
  .controller('myController', function($scope, StringServices) {
    $scope.User = {};

    $scope.insert = function(User) {
      StringServices.insertString(User)
        .then(function(response) {
          console.log('ok', response);
        })
        .catch(function(error) {
          console.log('failed', error);
        });
    };
  })
  .factory('StringServices', function($http){
    return {
      insertString: function(User){
        return $http.post('https://httpbin.org/post', { name: User.name });
      }
    };
});

此处相关的plunker https://plnkr.co/edit/MVUSeg

Answer 2

StringServices中的insertString函数只接受一个User参数，但是在控制器中传递两个参数，即User和一个函数。因此没有带两个参数的函数insertString。

你可以这样：

var app = angular.module('myApp', [])
//controller
app.controller("myController",['$scope','StringServices', function($scope,StringServices){
    $scope.User= {};
    $scope.insert = function(User){
        StringServices.insertString($scope.User, function(response){
            if(response.FLAG === "_SUCCESS"){
                console.log('Success');
            }
            else{
                console.log('Error');
            }
        });
    }
}])
//services

app.factory('StringServices', function($http){
    return {
        insertString: function(User, callbackFn){
            var data = {name: User.name};

            $http.post('http://localhost/anjali_services/server/insert.php',data)
            .success(callbackFn);
        }
    };
});

错误：StringServices.insertString（...）未定义

这是我的app.js

的index.html

insert.php

我收到此错误

2 个答案: