I am trying to get scroll news in any page of the website from database without having to pass the variable in every controller of the site. So I decided to use hooks instead of passing scroll variable in every controller.
I did create a class like this
class Scroll
{
function getScroller()
{
$data = array();
$CI =& get_instance();
$CI->db->where('a_status','active');
$CI->db->limit(4);
$CI->db->order_by('id','desc');
$Q = $CI->db->get('news');
if($Q->num_rows() > 0){
foreach($Q->result_array() as $row){
$data[] = $row;
}
}
$Q->free_result();
return $data;
}
}
What I get now is
Severity: Notice
Message: Trying to get property of non-object
Call to a member function get() on a non-object in E:\xampp\htdocs\
Can anyone please help me how to do this ? Thanks I want to get scrollernews in any controller's view automatically without having to pass in each controller. Thanks
If you are defining that on a view level, there is no need for that.
You can define db requests directly in a view.
Other approach would be to have separated controller which with separate view and load it in the page through iframe. It's often used for "web widgets" that can be later on loaded in to another pages.
Extending the core class of CI Controller will should cause you less troubles.
http://ellislab.com/codeigniter/user-guide/general/core_classes.html
application/core/MY_Controller.php
class MY_Controller extends CI_Controller {
public function __construct() {
parent::__construct();
//By do this, all controllers who use this class as parent controller
//will have $news in their views
$this->load->vars(array(
'news' => array()
));
}
}
application/controller/welcome.php
class Welcome extends MY_Controller {
public function index()
{
$this->load->view('welcome_message');
}
}
application/views/welcome_message.php
var_dump($news);
use separated library or helper and call that method on controller's constructs like :
class My_Controller extends CI_Controller(){
function __construct(){
parent::__construct();
//load your library
//call your library method
}
}
Related
How to call codeigniter controller function from view? When i call the function in a controller, get a 404 page.
You can call controller function from view in the following way:
Controller:
public function read() {
$object['controller'] = $this;
$this->load->view('read', $object);
}
View:
// to call controller function from view, do
$controller->myOtherFunct();
Codeigniter is an MVC (Model - View - Controller) framework. It's really not a good idea to call a function from the view. The view should be used just for presentation, and all your logic should be happening before you get to the view in the controllers and models.
A good start for clarifying the best practice is to follow this tutorial:
https://codeigniter.com/user_guide/tutorial/index.html
It's simple, but it really lays out an excellent how-to.
I hope this helps!
You can call a controller function with AJAX on your view.
In this case, I'm using the jQuery library to make the call.
<script type="text/javascript">
$.ajax({
url: "<?=site_url("controller/function")?>",
type: "post", // To protect sensitive data
data: {
ajax:true,
variableX: "string",
variableY: 25
//and any other variables you want to pass via POST
},
success:function(response){
// Handle the response object
}
});
</script>
This way you can create portions of code (modules) and reload them the AJAX method in a HTML container.
I would like to answer this question as this comes all times up in searches --
You can call a controller method in view, but please note that this is not a good practice in any MVC including codeigniter.
Your controller may be like below class --
<?php
class VCI_Controller extends CI_Controller {
....
....
function abc($id){
return $id ;
}
}
?>
Now You can call this function in view files as below --
<?php
$CI =& get_instance();
$CI->abc($id) ;
?>
class MY_Controller extends CI_Controller {
public $CI = NULL;
public function __construct() {
parent::__construct();
$this->CI = & get_instance();
}
public function yourMethod() {
}
}
// in view just call
$this->CI->yourMethod();
Try this one.
Add this code in Your View file
$CI = & get_instance();
$result = $CI->FindFurnishName($pera);
Add code in Your controller File
public function FindFurnishName($furnish_filter)
{
$FindFurnishName = $this->index_modal->FindFurnishName($furnish_filter);
$FindFurnishName_val = '';
foreach($FindFurnishName as $AllRea)
{
$FindFurnishName_val .= ",".$AllRea->name;
}
return ltrim($FindFurnishName_val,',');
}
where
FindFurnishName is name of function which is define in Your Controller.
$pera is a option ( as your need).
One idea i can give is,
Call that function in controller itself and return value to view file. Like,
class Business extends CI_Controller {
public function index() {
$data['css'] = 'profile';
$data['cur_url'] = $this->getCurrURL(); // the function called and store val
$this->load->view("home_view",$data);
}
function getCurrURL() {
$currURL='http://'.$_SERVER['HTTP_HOST'].'/'.ltrim($_SERVER['REQUEST_URI'],'/').'';
return $currURL;
}
}
in view(home_view.php) use that variable. Like,
echo $cur_url;
views cannot call controller functions.
I know this is bad..
But I have been in hard situation where it is impossible to put this back to controller or model.
My solution is to call a function on model.
It can be do inside a view.
But you have to make sure the model has been loaded to your controller first.
Say your model main_model, you can call function on the model like this on your view :
$this->main_model->your_function();
Hope this help. :)
We can also pass controller function as variable in the view page.
class My_controller extends CI_Controller {
public function index() {
$data['val']=3;
$data['square']=function($val){
return $val*$val;
};
$this->load->view('my-view',$data);
}
}
In the view page
<p>Square of <?=$val?>
<?php
echo $square($val);
?>
</p>
The output is 9
it is quite simple just have the function correctly written in the controller class and use a tag to specify the controller class and method name, or any other neccessary parameter..
<?php
if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Iris extends CI_Controller {
function __construct(){
parent::__construct();
$this->load->model('script');
$this->load->model('alert');
}public function pledge_ph(){
$this->script->phpledge();
}
}
?>
This is the controller class Iris.php
and the model class with the function pointed to from the controller class.
<?php
if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Script extends CI_Model {
public function __construct() {
parent::__construct();
// Your own constructor code
}public function ghpledge(){
$gh_id = uniqid(rand(1,11));
$date=date("y-m-d");
$gh_member = $_SESSION['member_id'];
$amount= 10000;
$data = array(
'gh_id'=> $gh_id,
'gh_member'=> $gh_member,
'amount'=> $amount,
'date'=> $date
);
$this->db->insert('iris_gh',$data);
}
}
?>
On the view instead of a button just use the anchor link with the controller name and method name.
<html>
<head></head>
<body>
PLEDGE PH
</body>
</html>
I had this same issue , but after a couple of research I fond it out it's quite simple to do,
Locate this URL in your Codeigniter project: application/helpers/util_helper.php
add this below code
//you can define any kind of function but I have queried database in my case
//check if the function exist
if (!function_exists('yourfunctionname')) {
function yourfunctionname($param (if neccesary)) {
//get the instance
$ci = & get_instance();
// write your query with the instance class
$data = $ci->db->select('*');
$data = $ci->db->from('table');
$data = $ci->db->where('something', 'something');
//you can return anythting
$data = $ci->db->get()->num_rows();
if ($data > 0) {
return $data;
} else {
return 0;
}
}
}
I know this question is old but it is still a relevant question. From my experience there are situations that warrant calling a function from view in your Codeigniter 4 app, I'll just advise that you keep it clean and minimal. Below is how I have called controller function from view:
In your controller file add this code
public function index()
{
$data = [];
$model = new UsersModel();
$data['users'] = $model->findAll();
// $this refers to the controller to be called from view
$data['callfromview'] = $this;
return view('users', $data)
}
In your view, call the controller like this:
<?php $something = $callfromview->fetch_data($id);?>
Finally in the controller, create the fetch_data function
public function fetch_data($id)
{
$image = new ImageModel();
return $image->find($id);
}
the END!
if you need to call a controller from a view,
maybe to load a partial view,
you thinking as modular programming,
and you should implement HMVC structure in lieu of plane MVC.
CodeIgniter didnt implement HMVC natively,
but you can use this useful library in order to implement HMVC.
https://bitbucket.org/wiredesignz/codeigniter-modular-extensions-hmvc
after setup
remember:that all your controllers should extends from MX_Controller in order to using this feature.
Go to the top of your View code and do it like this :
<?php
$this->load->model('MyModelName');
$MyFunctionReturnValue = $this->MyModelName->MyFunctionName($param));
?>
<div class="row">
Your HTML CODE
</div>
I am using Ion_Auth library with Codeigniter 3.0.*. I managed to display the user email I am logged in with with this line of code in the __construct() method of my Admin_Controller:
$this->user_email = $this->ion_auth->user()->row();
But I need to repeat this code:
$data['user_email'] = $this->user_email->email;
In every view method within every controller. I display the variable $user_email in my header.php, which is the same for every page. How do I make it accessible for everyone without repeating this line of code?
Add a class property $data to the Admin_controller class definition.
The $data property will be available to each controller that extends Admin_controller. Because it is a class property it is accessed with the syntax $this->data.
class Admin_controller extends CI_Controller
{
//our new class property
protected $data = array();
public function __construct(){
parent :: __construct();
// do what is needed to get $ion_auth working
}
}
In any class extending Admin_controller set $data['$user_email'] in the constructor. It is then available to every view that is given $this->data
class Some_controller extends Admin_controller
{
public function __construct(){
parent :: __construct();
//I am assuming that by this time $this->ion_auth->user() exists
//so we add a key and value to the class' $data property
//Note the use of the "$this->" syntax)
$this->data['user_email'] = $this->ion_auth->user()->row();
}
public function sets_up_a_view(){
//do stuff until you're ready for the header
//note that we are sending the class property "$this->data" to the view
$this-load->view('header', $this->data);
//load other views as needed using $this-data or other array - your choice
}
public function some_other_view(){
//send class property to view
$this-load->view('header', $this->data);
$data['foo'] = 42;
//send local var to view
$this-load->view('other_parts', $data);
}
}
Notice that both sets_up_a_view() and some_other_view() send the class property '$this->data' to header.php. But in some_other_view() we setup a local variable called $data to send to the other_parts.php view.
The solution was adding these two lines of code in my Admin_controller:
$data['user_email'] = $this->ion_auth->user()->row()->email;
$this->load->vars($data);
With this, every view method in the controllers extending Admin_controller can access this variable.
I made an array in MY_Controller class placed on core folder. In its constructor i fetched records from db so as to make navigation menu in my views. Since i have different page layouts so i cannot call the same header view every where. for this reason i made a core class as per my understanding which i am not sure is right or not. below is the code for my controller
class MY_controller extends CI_Controller
{
function __construct()
{
parent::__construct();
$this->load->model('Category_model');
$data['parent'] = $this->Category_model->getParentCategories();
$data['child'] = $this->Category_model->getChildCategories();
}
}
my default controller is main
class Main extends MY_controller {
public function __construct()
{
parent::__construct();
}
public function index()
{
$this->load->view('home/header',$data);
$this->load->view('home/footer');
}
Now in my header view i am receiving undefined variable parent and child error. I want this two variables available in all the views so that i do not have to define those two variables in every controller.
Thanks
You may try something like this:
class MY_controller extends CI_Controller
{
$commonData = array();
function __construct()
{
parent::__construct();
$this->load->model('Category_model');
$this->commonData['parent'] = $this->Category_model->getParentCategories();
$this->commonData['child'] = $this->Category_model->getChildCategories();
}
}
Then use $this->comonData in your index method instead of $data to pass to the view:
public function index()
{
$this->load->view('home/header', $this->comonData);
$this->load->view('home/footer');
}
Now it'll be available in the header view and since it's at the top of other views then you may use it further, unless you override it with other value in any class.
How to call codeigniter controller function from view? When i call the function in a controller, get a 404 page.
You can call controller function from view in the following way:
Controller:
public function read() {
$object['controller'] = $this;
$this->load->view('read', $object);
}
View:
// to call controller function from view, do
$controller->myOtherFunct();
Codeigniter is an MVC (Model - View - Controller) framework. It's really not a good idea to call a function from the view. The view should be used just for presentation, and all your logic should be happening before you get to the view in the controllers and models.
A good start for clarifying the best practice is to follow this tutorial:
https://codeigniter.com/user_guide/tutorial/index.html
It's simple, but it really lays out an excellent how-to.
I hope this helps!
You can call a controller function with AJAX on your view.
In this case, I'm using the jQuery library to make the call.
<script type="text/javascript">
$.ajax({
url: "<?=site_url("controller/function")?>",
type: "post", // To protect sensitive data
data: {
ajax:true,
variableX: "string",
variableY: 25
//and any other variables you want to pass via POST
},
success:function(response){
// Handle the response object
}
});
</script>
This way you can create portions of code (modules) and reload them the AJAX method in a HTML container.
I would like to answer this question as this comes all times up in searches --
You can call a controller method in view, but please note that this is not a good practice in any MVC including codeigniter.
Your controller may be like below class --
<?php
class VCI_Controller extends CI_Controller {
....
....
function abc($id){
return $id ;
}
}
?>
Now You can call this function in view files as below --
<?php
$CI =& get_instance();
$CI->abc($id) ;
?>
class MY_Controller extends CI_Controller {
public $CI = NULL;
public function __construct() {
parent::__construct();
$this->CI = & get_instance();
}
public function yourMethod() {
}
}
// in view just call
$this->CI->yourMethod();
Try this one.
Add this code in Your View file
$CI = & get_instance();
$result = $CI->FindFurnishName($pera);
Add code in Your controller File
public function FindFurnishName($furnish_filter)
{
$FindFurnishName = $this->index_modal->FindFurnishName($furnish_filter);
$FindFurnishName_val = '';
foreach($FindFurnishName as $AllRea)
{
$FindFurnishName_val .= ",".$AllRea->name;
}
return ltrim($FindFurnishName_val,',');
}
where
FindFurnishName is name of function which is define in Your Controller.
$pera is a option ( as your need).
One idea i can give is,
Call that function in controller itself and return value to view file. Like,
class Business extends CI_Controller {
public function index() {
$data['css'] = 'profile';
$data['cur_url'] = $this->getCurrURL(); // the function called and store val
$this->load->view("home_view",$data);
}
function getCurrURL() {
$currURL='http://'.$_SERVER['HTTP_HOST'].'/'.ltrim($_SERVER['REQUEST_URI'],'/').'';
return $currURL;
}
}
in view(home_view.php) use that variable. Like,
echo $cur_url;
views cannot call controller functions.
I know this is bad..
But I have been in hard situation where it is impossible to put this back to controller or model.
My solution is to call a function on model.
It can be do inside a view.
But you have to make sure the model has been loaded to your controller first.
Say your model main_model, you can call function on the model like this on your view :
$this->main_model->your_function();
Hope this help. :)
We can also pass controller function as variable in the view page.
class My_controller extends CI_Controller {
public function index() {
$data['val']=3;
$data['square']=function($val){
return $val*$val;
};
$this->load->view('my-view',$data);
}
}
In the view page
<p>Square of <?=$val?>
<?php
echo $square($val);
?>
</p>
The output is 9
it is quite simple just have the function correctly written in the controller class and use a tag to specify the controller class and method name, or any other neccessary parameter..
<?php
if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Iris extends CI_Controller {
function __construct(){
parent::__construct();
$this->load->model('script');
$this->load->model('alert');
}public function pledge_ph(){
$this->script->phpledge();
}
}
?>
This is the controller class Iris.php
and the model class with the function pointed to from the controller class.
<?php
if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Script extends CI_Model {
public function __construct() {
parent::__construct();
// Your own constructor code
}public function ghpledge(){
$gh_id = uniqid(rand(1,11));
$date=date("y-m-d");
$gh_member = $_SESSION['member_id'];
$amount= 10000;
$data = array(
'gh_id'=> $gh_id,
'gh_member'=> $gh_member,
'amount'=> $amount,
'date'=> $date
);
$this->db->insert('iris_gh',$data);
}
}
?>
On the view instead of a button just use the anchor link with the controller name and method name.
<html>
<head></head>
<body>
PLEDGE PH
</body>
</html>
I had this same issue , but after a couple of research I fond it out it's quite simple to do,
Locate this URL in your Codeigniter project: application/helpers/util_helper.php
add this below code
//you can define any kind of function but I have queried database in my case
//check if the function exist
if (!function_exists('yourfunctionname')) {
function yourfunctionname($param (if neccesary)) {
//get the instance
$ci = & get_instance();
// write your query with the instance class
$data = $ci->db->select('*');
$data = $ci->db->from('table');
$data = $ci->db->where('something', 'something');
//you can return anythting
$data = $ci->db->get()->num_rows();
if ($data > 0) {
return $data;
} else {
return 0;
}
}
}
I know this question is old but it is still a relevant question. From my experience there are situations that warrant calling a function from view in your Codeigniter 4 app, I'll just advise that you keep it clean and minimal. Below is how I have called controller function from view:
In your controller file add this code
public function index()
{
$data = [];
$model = new UsersModel();
$data['users'] = $model->findAll();
// $this refers to the controller to be called from view
$data['callfromview'] = $this;
return view('users', $data)
}
In your view, call the controller like this:
<?php $something = $callfromview->fetch_data($id);?>
Finally in the controller, create the fetch_data function
public function fetch_data($id)
{
$image = new ImageModel();
return $image->find($id);
}
the END!
if you need to call a controller from a view,
maybe to load a partial view,
you thinking as modular programming,
and you should implement HMVC structure in lieu of plane MVC.
CodeIgniter didnt implement HMVC natively,
but you can use this useful library in order to implement HMVC.
https://bitbucket.org/wiredesignz/codeigniter-modular-extensions-hmvc
after setup
remember:that all your controllers should extends from MX_Controller in order to using this feature.
Go to the top of your View code and do it like this :
<?php
$this->load->model('MyModelName');
$MyFunctionReturnValue = $this->MyModelName->MyFunctionName($param));
?>
<div class="row">
Your HTML CODE
</div>
In my project, I have one search section with 3 select box. I passed the value to it using
$data['restaurant_all']=$this->restaurant_model->get_all('','','','','','yes')->result();
$data['state_all']=$this->state_model->get_all();
$data['menu_all']=$this->menu_model->get_all('all','','','','','','yes')->result();
$data['restaurant']=$this->input->post('restaurant');
$data['state']=$this->input->post('area');
$data['food_type']=$this->input->post('menu');
I need this statement in all my pages. In there any way to accomplish this without writing these statements in all the pages
a. extend the default controller by creating a file MY_Contoller.php at a suitable location.
b. create a custom class that will extend the default controller.
c. add a protected or public variable $data to custom class.
e. do something with data using __construct()
d. make every controller extend the custom controller.
e. you can access this variable like any other class variable.
example code:
MY_Controller.php
class APP extends CI_controller {
protected $data;
function __construct() {
parent::__construct();
$this->_init();
}
function _init() {
$this->data['state'] = $this->input->post('area');
}
}
normal controllers:
class Welcome extends APP {
function __construct() {
parent::__construct();
}
function view() {
/* pass this data value like normal data param */
$this->load->view('some_view', $this->data);
}
}
hope it helps.
Use constants, in /config/constants.php