Ionic，Angularjs，Mysql http帖子 [英] Ionic, Angularjs, Mysql http post
问题描述
我刚刚发现了一个离子框架，并试图学习它，但我遇到了一些我无法弄清楚的障碍，试图搜索谷歌对我没什么帮助。
I am just found out an ionic framework and was trying to learn it, but i meet some obstacle that i cannot figure out, tried to search for google does not help me much.
我正在尝试创建一个将被检查到mysql数据库的登录表单，但它不起作用，我不知道问题出在哪里。
I am trying to create a login form that will be checked to mysql database, but it does not work, i am not sure where is the problem.
这是我的代码
Login.html
<ion-header-bar align-title="center" class="bar-balanced">
<h1 class="title">Test</h1>
</ion-header-bar>
<ion-view title="Sign-In">
<ion-content class="padding has-header">
<ion-list>
<ion-item>
<input type="text" ng-model="username" placeholder="Username">
</ion-item>
<ion-item>
<input type="password" ng-model="password" placeholder="Password">
</ion-item>
</ion-list>
<button nav-clear class="button button-block button-balanced" ng-click="LogIn()">Login</button>
</ion-content>
</ion-view>
login.php
<?php
// check username or password from database
$postdata = file_get_contents("php://input");
$request = json_decode($postdata);
$user = $request->user;
$password = $request->password;
mysql_connect("localhost", "username", "password");
mysql_select_db("dbname");
$results = mysql_query("SELECT name, city FROM tbl_user WHERE name='".user."' AND city='".$password."' LIMIT 1") or die('{"error":"Login error! Code: 003"}');
$match = mysql_num_rows($results);
if($match > 0 ){
echo "1";
}else{
echo "0";
}
?>
app.js
angular.module('ionicApp', ['ionic','starter.controllers'])
.config(function($stateProvider, $urlRouterProvider) {
$stateProvider
.state('app', {
url: "/app",
abstract: true,
templateUrl: "templates/menu.html",
controller: 'AppCtrl'
})
.state('login', {
url: "/login",
templateUrl: "templates/login.html",
controller: 'LoginCtrl'
});
$urlRouterProvider.otherwise('/login');
});
controller.js
angular.module('starter.controllers', [])
.controller('LoginCtrl', function($scope, $state, $http) {
$scope.LogIn = function() {
var request = $http({
method: "post",
url: "http://www.mywebsite.com/api/login.php",
data: {
user: $scope.username,
password: $scope.password
},
headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
});
/*Successful HTTP post request or not */
request.success(function (data){
if (data == '1'){
$scope.responseMessage = "You are in";
}
else {
$scope.responseMessage = "Username or Password is incorrect";
}
})
}
});
index.html
<!DOCTYPE html>
<html ng-app="ionicApp">
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
<title></title>
<link href="lib/ionic/css/ionic.css" rel="stylesheet">
<link href="css/style.css" rel="stylesheet">
<!-- ionic/angularjs js -->
<script src="lib/ionic/js/ionic.bundle.js"></script>
<!-- cordova script (this will be a 404 during development) -->
<script src="cordova.js"></script>
<!-- your app's js -->
<script src="js/app.js"></script>
<script src="js/controllers.js"></script>
<!--<script src="js/services.js"></script>-->
</head>
<body>
<ion-nav-view animation="slide-left-right"></ion-nav-view>
</body>
无法弹出消息。
有人可以指出我的问题在哪里吗？
It cannot popup the message. Someone can point me where is the problem?
谢谢之前
推荐答案
尝试使用一个对象（例如 $ scope.user ）来存储用户名和密码。所以代码如下：
try to use an object (for example $scope.user) in which to store username and password. So the code becomes as below:
Login.html
<ion-list>
<ion-item>
<input type="text" ng-model="user.username" placeholder="Username">
</ion-item>
<ion-item>
<input type="password" ng-model="user.password" placeholder="Password">
</ion-item>
</ion-list>
controller.js
.controller('LoginCtrl', function($scope, $state, $http) {
$scope.user = {};
$scope.LogIn = function() {
var request = {
method: "post",
url: "http://www.mywebsite.com/api/login.php",
data: {
user: $scope.user.username,
password: $scope.user.password
},
headers: { 'Content-Type': 'application/x-www-form-urlencoded' }
};
/*Successful HTTP post request or not */
$http(request).then(function (response){
if (response.data == '1'){
$scope.responseMessage = "You are in";
}
else {
$scope.responseMessage = "Username or Password is incorrect";
}
})
}
});
另一个建议是以正确的形式使用$ http：
Another suggestion is to use $http in the right form:
$http({
...
}).then(function successCallback(response) {
// this callback will be called asynchronously
// when the response is available
}, function errorCallback(response) {
// called asynchronously if an error occurs
// or server returns response with an error status.
});
参见 https://docs.angularjs.org/api/ng/service/$http
注意：如果你希望你可以直接传递用户对象作为LogIn（）方法的参数。
N.B.: if you want you can pass the user object directly as argument of LogIn() method.
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