Severity: Notice Message: Trying to get property of non-object - mysql

I am receiving an error when attempting to pull several rows of data from my MySQL database and display their content on my web page. Since I am very new to Code Igniter, i am not sure how to fix this error:
Severity: Notice
Message: Trying to get property of non-object
Here is the code associated with the error.
Model:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class news_model extends CI_Model
{
function __construct()
{
parent::__construct();
}
function get_news()
{
$query = $this->db->query("SELECT * FROM news WHERE active = 1");
if ($query->num_rows() > 0)
{
foreach($query->result() AS $row)
{
$array[] = get_object_vars($row);
}
return $array;
}
}
}?>
Controller:
<?php
class profile extends CI_Controller
{
public function __construct()
{
parent::__construct();
$this->load->helper(array('url','html'));
$this->load->library('session');
$this->load->database();
$this->load->model('user_model');
$this->load->model('news_model');
}
function index()
{
$details = $this->user_model->get_user_by_id($this->session->userdata('uid'));
$data['uname'] = $details[0]->fname . " " . $details[0]->lname;
$data['uemail'] = $details[0]->email;
$data['ustorenumber'] = $details[0]-> storenumber;
$data['urank'] = $details[0]-> rank;
$data['news'] = $this->news_model->get_news();
$this->load->view('profile_view', $data);//Error reported on this line.
}
}
View:
<?php
foreach($news AS $row) {
echo '<p>' . $row->content . '</p>';//Error reported on this line
}
?>
Full Error:
A PHP Error was encountered
Severity: Notice
Message: Trying to get property of non-object
Filename: views/profile_view.php
Line Number: 82
Backtrace:
File: C:\xampp\htdocs\cig\application\views\profile_view.php
Line: 82
Function: _error_handler
File: C:\xampp\htdocs\cig\application\controllers\profile.php
Line: 22
Function: view
File: C:\xampp\htdocs\cig\index.php
Line: 315
Function: require_once

In model return result in object format.Like this..
function get_news()
{
$query = $this->db->query("SELECT * FROM news WHERE active = 1");
if ($query->num_rows() > 0)
{
return $query->result();//returns result in object format
}
}
OR
IN view: use $row['content'] insetad of $row->content;
<?php
foreach($news AS $row) {
echo '<p>' . $row['content']. '</p>';//Error reported on this line
}
?>

Related

Upload a file to filesystem and then store details on a datatable [duplicate]

This question already has answers here:
Yii Framework 2.0 Uploading Files Error finfo_file(): failed to open stream: No such file or directory
(10 answers)
Closed 3 years ago.
I'm coding a view to upload a file, the user may choose between upload it to the filesystem or upload it to the filesystem and record the filename on a datatable.
At this moment, the first stage (upload it to the filesystem only) is working, regards to the second option, the file is uploaded to the directory but I can't add the filename info to the table; I am confuse with these 2 facts: 1) I am getting this error: finfo_file(/tmp/phpKB2h1A): failed to open stream: No such file or directory, 2) the var (tplfilename) is blank
This is the View:
<?php
use yii\widgets\ActiveForm;
?>
<?php if (Yii::$app->session->hasFlash('sminfo2')): ?>
<div class="alert alert-success">
<?= Yii::$app->session->getFlash('sminfo2');?>
</div>
<?php else: ?>
<?php $form = ActiveForm::begin(['options' => ['enctype' => 'multipart/form-data']]) ?>
<?= $form->field($model, 'tplfilename')->fileInput()->label('Choose your Template',['class'=>'label-class']) ?>
<?= $form->field($model, 'destination')->radioList(array('1'=>'Filesystem','2'=>'Datatable'))->label('File store destination:') ?>
<button>Submit</button>
<?php ActiveForm::end() ?>
<?php endif; ?>
This is the controller's function:
public function actionUploadtpl(){
$model = new UploadtplForm();
if (Yii::$app->request->isPost) {
$model->destination = $_POST['UploadtplForm']['destination'];
$model->tplfilename = UploadedFile::getInstance($model, 'tplfilename');
if($model->destination == "1"){
if ($model->upload()) {
// file is uploaded successfully
Yii::$app->session->setFlash("sminfo2", "Template file uploaded successfully to Filesystem");
return $this->refresh();
//return;
}//end of if model upload
}//end of if model destination ==1
else{
if($model->upload()){
$model->save();
Yii::$app->session->setFlash("sminfo2", "Template file uploaded successfully to Datatable");
return $this->refresh();
}
}
}//end of isPost
return $this->render('uploadtpl', ['model' => $model]);
}//end of uploadtplform
And this is the model:
<?php
namespace app\models;
use Yii;
use yii\base\Model;
use yii\web\UploadedFile;
use yii\db\ActiveRecord;
/**
* #property int $id
* #property string $tplfilename
**/
//class UploadtplForm extends Model
class UploadtplForm extends \yii\db\ActiveRecord
{
/**
* #var UploadedFile
*/
public $tplfilename; //upload filename
public $destination; //set by user on view: upload the file to filesystem or datatable
public static function tableName(){
return 'templates';
}
public function rules()
{
return [
[['tplfilename'], 'file', 'skipOnEmpty' => false, 'extensions' => 'php'],
];
}
public function upload()
{
/*
if ($this->validate()) {
$this->tplFile->saveAs('mail/views' . $this->tplFile->baseName . '.' . $this->tplFile->extension);
return true;
} else {
return false;
}
*/
//store using filesystem
$this->tplfilename->saveAs('../mail/views/' . $this->tplfilename->baseName . '.' . $this->tplfilename->extension);
return true;
}//end of upload function
public function attributeLabels()
{
return [
'id' => 'ID',
'tplfilename' => 'File name',
];
}
}
?>
I would like to have your comments about how to achieve to upload the file and record the filename on the data table, most of the issue is about this line: $model->save().
Here is my model like an example:
/*
* Upload image
* #params $url Url where to upload
* #return filename
*/
public function upload($url, $image_name)
{
try{
if ($this->validate()) {
$this->imageFile->saveAs($url . $this->imageFile->baseName . '.' . $this->imageFile->extension);
if($image_name){
FileHelper::unlink($url . $image_name);
}
return $this->imageFile->baseName . '.' . $this->imageFile->extension;
}
} catch (Exception $ex) {
throw new Exception("Error while upload file.");
return false;
}
Here is my controller:
/**
* Upload image for product.
* If update is successful, the browser will be redirected to the 'view' page.
* #param integer $id
* #return mixed
*/
protected function Upload(UploadedFile $object, $name = null)
{
$user_id = $this->getUser()->id;
$model = new UploadForm();
$model->imageFile = $object;
$path = Yii::getAlias('#frontend/uploads/user-files/user-') . $user_id;
//check if dirrectory exist
if ( ! is_dir($path)) {
FileHelper::createDirectory($path);
}
$url = $path . '/';
return $model->upload($url, $name);
}
and here i call my method from action and save the model:
$cart_item_option->option_type_value = $this->Upload(UploadedFile::getInstanceByName('image'), null);
$cart_item_option->save();

Error in updating data in code igniter model

this is model function
<?php
class change_data extends CI_Model {
function __construct() {
parent::__construct();
}
function change($id,$action)
{
if($action==0)
$st=1;
else
$st=0;
$data = array('gud_status' => $st);
$where = "id=".$id;
$this->db->update_string('gallery', $data, $where);
return $this->db->affected_rows();
}
}
everything is working fine.. also getting 2 parameter values but table updation fails.. affect 0 rows!!!
any body can sort this!!
Pass where condition in array. Ex-
function change($id,$action)
{
if($action==0)
$st=1;
else
$st=0;
$data = array('gud_status' => $st);
$where = array('id'=>$id);
$this->db->update_string('gallery', $data, $where);
return $this->db->affected_rows();
}

Zend error Connection

I have a problem with my code, the first code is like
<?php
require_once('zend/json.php');
require_once('zend/db.php');
//require_once 'Zend/Db/Adapter/Pdo/pgsql.php';
class jsonvi
{
protected $_db;
public function _koneksi ()
{
try
{
$this->_db = zend_db::factory('PDO_PGSQL',array(
'host'=>'localhost',
'username'=>'stet',
'password'=>'test',
'dbname'=>'test'
));
return $this->_db;
}
catch(zend_db_exception $e)
{
return $e->getmessage();
}
}
public function getdata()
{
$db = $this->_koneksi();
try
{
$sql = "select * from info ";
$da = $db->fetchall($sql);
$num = count($da);
for ($a=0;$a<$num;$a++)
{
$data = $db->fetchall($sql);
return $data;
}
}
catch (zend_db_exception $e)
{
return $e->getmessage();
}
}
}
$view = new jsonvi();
$view = $view->getdata();
echo zend_json::encode($view);
?>
and it works well, but I want to make it like
<?php
include ('table.php');
include ('config.php');
require_once('zend/json.php');
require_once('zend/db.php');
require_once 'Zend/Db/Adapter/Pdo/pgsql.php';
class jsonvi
{
protected $_db;
public function _koneksi ()
{
try
{
$this->_db = zend_db::factory('PDO_PGSQL',array(
'host'=>$dbhost,
'username'=>$dbuser,
'password'=>$dbpass,
'dbname'=>$dbdb
));
return $this->_db;
}
catch(zend_db_exception $e)
{
return $e->getmessage();
}
}
public function getdata()
{
$db = $this->_koneksi();
try
{
$sql = "select * from ".$table;
$da = $db->fetchall($sql);
$num = count($da);
for ($a=0;$a<$num;$a++)
{
$data = $db->fetchall($sql);
return $data;
}
}
catch (zend_db_exception $e)
{
return $e->getmessage();
}
}
}
$view = new jsonvi();
$view = $view->getdata();
echo zend_json::encode($view);
?>
I don't know whats wrong with this code, I need help.
the error message Notice: Undefined variable: dbdb in C:\wamp....
The config.php is only have code like $dbpass = 'test'; and like that, I'm creating a simple web and I want to make my code to other database and aplikasi, so I only changed the config.php and the table.php
for the table.php maybe will work if the config.php work.
Thanks.
You are using a class and not paying attention to variable scope.
I understand you have variables with values for the DB connection in that config.php file. Although these variables are available inside the script file with the include they are NOT available and accessible inside your class. The only difference would be any constants with define (or variables inside a global which is not a good idea).
You could create a config class inside the config.php and set the values as properties then instantiate that class inside your _koneksi method. And then you would use a require_once instead of the include.
UPDATE
So here's an example that is similar to your file where your include ('config.php'); is essentially the same as declaring your variables directly before the class begins.
// variable defined outside the class
$foo = 'foo';
class demo
{
public $bar = 'bar';
function test()
{
$foobar = 'foobar';
echo 'Class property $bar is:' . $this->bar . PHP_EOL;
echo 'Local variable $foobar is:' . $foobar . PHP_EOL;
}
function run()
{
if (isset($foo)) {
echo 'Global variable $foo is:' . $foo . PHP_EOL;
} else {
// This is where you have your problem.
// Variables from outside the class are not available.
echo 'Global variable $foo not found' . PHP_EOL;
}
}
}
$demo = new demo();
$demo->test(); // Class property $bar is:bar
// Local variable $foobar is:foobar
$demo->run(); // Global variable $foo not found
echo 'Variable $foo is: ' . $foo . PHP_EOL; // Class property $bar is:bar

Codeigniter Displaying Information In A View?

I'm extracting two different sets of data from a function in my model (syntax below). I'm trying to display the data my view. I put the variable in var_dump and var_dump is displaying the requested information but I'm having a hard time accessing that information. I'm getting two different sets of error messages as well. They are below. How would I display the information in my view? Thanks everyone.
Site Controller
public function getAllInformation($year,$make,$model)
{
if(is_null($year)) return false;
if(is_null($make)) return false;
if(is_null($model)) return false;
$this->load->model('model_data');
$data['allvehicledata'] = $this->model_data->getJoinInformation($year,$make,$model);
$this->load->view('view_show_all_averages',$data);
}
Model_data
function getJoinInformation($year,$make,$model)
{
$data['getPrice'] = $this->getPrice($year,$make,$model);
$data['getOtherPrice'] = $this->getOtherPrice($year,$make,$model);
return $data;
}
function getPrice($year,$make,$model)
{
$this->db->select('*');
$this->db->from('tbl_car_description d');
$this->db->join('tbl_car_prices p', 'd.id = p.cardescription_id');
$this->db->where('d.year', $year);
$this->db->where('d.make', $make);
$this->db->where('d.model', $model);
$query = $this->db->get();
return $query->result();
}
function getOtherPrice($year,$make,$model)
{
$this->db->select('*');
$this->db->from('tbl_car_description d');
$this->db->where('d.year', $year);
$this->db->where('d.make', $make);
$this->db->where('d.model', $model);
$query = $this->db->get();
return $query->result();
}
View
<?php
var_dump($allvehicledata).'<br>';
//print_r($allvehicledata);
if(isset($allvehicledata) && !is_null($allvehicledata))
{
echo "Cities of " . $allvehicledata->cardescription_id . "<br />";
$id = $allvehicledata['getPrice']->id;
$model = $allvehicledata[0]->model;
$make = $allvehicledata->make;
echo "$id".'<br>';
echo "$make".'<br>';
echo "$model".'<br>';
echo $allvehicledata->year;
}
?>
Error Messages
A PHP Error was encountered
Severity: Notice
Message: Trying to get property of non-object
Filename: views/view_show_all_averages.php
Line Number: 7
A PHP Error was encountered
Severity: Notice
Message: Undefined offset: 0
Filename: views/view_show_all_averages.php
Line Number: 9
In your controller you are assigning the result of function getJoinInformation to the variable allvehicledata. This variable is then assigned to the view.
The function getJoinInformation is returning an array with the following
$data = array(
'getPrice' => $this->getPrice($year,$make,$model),
'getOtherPrice' => $this->getOtherPrice($year,$make,$model)
);
So in your view you can access the attributes getPrice and getOtherPrice in the object $allvehicledata like
$allvehicledata->getPrice;
$allvehicledata->getOtherPrice;
In line 7 you try to access the attribute cardescription_id, which is not an attribute of the object $allvehicledata.
I think this is an attribute which is get from the db query, so you should try to access it allvehicledata->getPrice->cardescription_id or allvehicledata->getOtherPrice->cardescription_id.
In line 9 you try to access some data stored in an array $model = $allvehicledata[0]->model;, but $allvehicledata is not an array.

simple codeigniter query + results display won't display

I'm trying to display data from my database in a Codeigniter view. Seems like it should be simple, but it's just not working.
I'm getting 2 errors: undefined variable ($movielist, in the view) and invalid argument for php foreach, also in the view.
Any idea how I can get this to work? Code below.
Controller
function displayMovies() {
$this->load->model('movie_list_model');
$data['movielist'] = $this->movie_list_model->getList();
$this->load->view('movielist_view', $data);
}
Model
function getList() {
$query = $this->db->query('SELECT firstname, lastname, favorite_movie FROM movies');
return $query->result();
if ($query->num_rows() > 0) {
foreach ($query->result_array() as $row)
{
echo $row['firstname'];
echo $row['lastname'];
echo $row['favorite_movie'];
}
}
View
<?php foreach($movielist as $mlist)
{
echo $mlist->firstname . '<br />';
echo $mlist->lastname . '<br />';
echo $mlist->favorite_movie;
}
?>
If( the query doesn't find any rows, it will return null, resulting in the undefined error in your view. The invalid argument error is because you can't iterate through null.
A safety would be including something like this in your view:
if($movielist)
{
/* foreach() {} */
}
Also, your model should only return data (not echo it).
function getList() {
$query = $this->db->query('SELECT firstname, lastname, favorite_movie FROM movies');
return $query->result(); /* returns an object */
// Alternatively:
// return $query->result_array(); /* returns an array */
}
I also recommend using Active record:
function getList() {
$this->db->select('firstname');
$this->db->select('lastname');
$this->db->select('favorite_movie');
$query = $this->get('movies');
return $query->result();
}
Good luck!