使用json时尝试获取非对象错误的属性

Question

I keep getting the following error

: Trying to get property of non-object in on line

: Trying to get property of non-object in on line

I am using AngularJS to get the input from a form, sending the data to a php using console.log function and decoding the json file using php, then checking a database to find info matching the input values.

JS:

$scope.login = function(acc) {
    console.log(acc);//getting data input by user

    //post is used to create
    $http.post('php/login.php', {'user': $scope.acc.user, 'pass': $scope.acc.pass}).success(function(data) {
        console.log(data);
        if (data) {//row inserted
          // if not successful, bind errors to error variables
          console.log("Succesful");
          $scope.insertMessage = "Data inserted";
        } else {
          // if unsuccessful, bind success message to message
          $scope.insertMessage = "Data not inserted";
        }
        $scope.acc="";//reset values in form to empty
        //redirect to list
    });

    $http.get('php/login.php').success(function(logged){
            $scope.loggedin = logged;
            console.log($scope.loggedin);
      })
      .error(function(err){
          $log.error(err);
      });   
};

PHP:

<?php
$data = json_decode(file_get_contents("php://input"));

$user = $data->user;
$pass = $data->pass;

require_once("connection.php");

$conn = connectToDb();
$query= "SELECT count(*) 
FROM tbl_logdetails 
WHERE username = '$user' and password = '$pass'";
$result = mysqli_query($conn, $query) 
    or die("error in query: ".mysqli_error($conn));
$row = mysqli_fetch_row($result);
$count = $row[0];

echo $count;

if($count == 0){
    $logged = false;
}else{
    $logged=true;
}
echo json_encode($logged);

?>

Any help would be appreciated.

Answer 1

Aren't you calling login with POST and then login with GET right after each other? And you're not passing anything to the GET login attempt, hence the non-object when you use json_decode . So your script is working on the POST attempt but printing out the error messages on the GET attempt.

Remove this part:

$http.get('php/login.php').success(function(logged){
            $scope.loggedin = logged;
            console.log($scope.loggedin);
      })
      .error(function(err){
          $log.error(err);
      });   

Answer 2

The $http.get was redundant and was executing login.php again without giving any parameters, removing the $http.get was the solution...

$scope.login = function(acc) {
    console.log(acc);//getting data input by user

    //post is used to create
    $http.post('php/login.php', {'user': $scope.acc.user, 'pass': $scope.acc.pass}).success(function(data) {
        console.log(data);
        if (data) {//row inserted
          // if not successful, bind errors to error variables
          console.log("Succesful");
          $scope.insertMessage = "Data inserted";
          $scope.loggedin = data;
            console.log($scope.loggedin);
        } else {
          // if unsuccessful, bind success message to message
          $scope.insertMessage = "Data not inserted";
        }
        $scope.acc="";//reset values in form to empty
        //redirect to list

    });
};