I want to pass $data from the controller named poll to the results_view however I am getting an undefined variable error.
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Poll extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->database();
$this->load->helper('form');
}
public function index()
{
$this->load->view('poll_view',$data);
}
public function vote()
{
echo "Voting Successfull";
$this->db->insert('votes',$_POST);
}
public function results()
{
echo "These are the results";
//$query = $this->db->get('votes');
$data = "hello";
$this->load->view('results_view', $data);
}
}
Results_view.php
<html>
<?php echo $data; ?>
</html>
$data should be an array or an object: http://codeigniter.com/user_guide/general/views.html
$data = array(
'title' => 'My Title',
'heading' => 'My Heading',
'message' => 'My Message'
);
$this->load->view('results_view', $data);
results_view.php
<html>
<?php
//Access them like so
echo $title.$heading.$message; ?>
</html>
In simple terms,
$data['a'] in controller becomes $a in your view. ($data won't exist in your view, only the index will become available)
e.g.
Controller:
$data['hello']='hellow world';
view:
echo $hello;
You just need to create a array, you using codeigniter right?
Example on controller:
$data['hello'] = "Hello, world";
$this->load->view('results_view', $data);
In de page "results_view" you just have to:
<?php echo $hello;?>
Obs: You can create n datas, just pay attention in the name and make it a array.
Obs²: To use the data use the key of the array with a echo.
The view wouldn't call the data 'data'
The controller would include an associative index (not sure if that's correct nomenclature) for data e.g 'stuff' looking thus $data['stuff']
You'd echo in the view so: echo $stuff; not echo $data;
I am a v lowly code fiddler but do really like CodeIgniter so excuse me if i've got this arse about tit.
One more thing - surely your constructor function is a bit of a waste. All that loading of libraries and helpers is done with the autoload file.
You can create property $data = []; inside CI_Controller(path: system/core/Controller.php) and store all data to show in view. U can load common data like languages, menu, etc in CI_Controller. Also u can add special data for view in controller. (example: $this->data['message'] = "Hello world";)
Finally, u can pass $this->data to view when load view (example: $this->load->view('view_name',$this->data);)
I hope this will help you
you can do it this way
defined array in controller
$data['hello'] = "hello";
and pass variable to view
echo $hello;
If you pass
$data = your code
$this->load->view('your-page', $data);
and get data on your view as
<?php echo $data;?>
It won't work because ci didn't understand this patern. If like to pass value form controller to view so you can try this -
controller -
$data['any-name'] = your values;
$this->load->view('your-page', $data);
then in your view you can get this data by -
<?php echo $any-name;?>
Hope this helps you.
In your controller you can pass
$data['poll'] = "Your results";
In your view you can call
echo $poll;
In controller:
$data["result"] = $this->login_model->get_login(); // Get array value from DB..
$this->load->view('login-form',$data); // Pass the array to view
In view:
print_r($result); // print the array in view file
Ok so I finally solved it. You should really have a model (it helps a lot)
In your model do something like
Model
class poll_model extends CI_MODEL {
function __construct() {
$this-load->database();
}
function get_poll {
$this->db->query("SELECT * FROM table");
$row = $query->row();
$obj = array(
'id' => $row->id
);
return $obj;
}
}
Now if you have more than an id say name of poll # you can add in array.
Now in your controller do
class Poll extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->database();
$this->load->helper('form');
$this->load->model('poll_model');
}
public function index()
{
$data["a"] = $this->poll_model->get_poll();
$this->load->view('poll_view',$data);
}
And finally in VIEW put
<? echo $a["id"]; ?>
This is a big help. I figured it out by testing and it works for me.
I have seen all above answer so here is what I do when I have to load the data from the controller to my view.
To Pass the Data To the view from the controller:
public function your_controller(){
// Your Necessary Code
// You have the $data, $data2, $data3 to post to the view.
$this->load->view('your_view_directory or view_page',['data'=>$data, 'data2'=>$data2, 'data3'=>$data3... so on ]);
}
And At the View Side You can simply retrieve that data:
To Display You can simply use echo, print, print_r. And if you want to loop over it, you can do that as well.
In controller:
public function product(){
$data = array("title" => "Books", "status"=>"Read","author":"arshad","company":"3esofttech",
"subject":"computer science");
Data From Model to controller
$this->load->model('bookModel');
$result = $this->bookModel->getMoreDetailsOfBook();
**Add *$result* from model to *$data* array**
$data['tableRows'] = $result;
$data from Controller to View
$this->load->view('admin/head',$data);
And to access in view file
views/user.php
<?php echo $data;
foreach($tableRows as $row){ echo
$row['startData']; } ?>
Instead of
$data = "hello";
$this->load->view('results_view', $data);
Do
$data['hello'] = 'hello';
$this->load->view('results_view', $data);
In your controller file and controller will send data having hello as string to results_view and in your view file you can simply access by
echo $hello;
Related
I want to pass $data from the controller named poll to the results_view however I am getting an undefined variable error.
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Poll extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->database();
$this->load->helper('form');
}
public function index()
{
$this->load->view('poll_view',$data);
}
public function vote()
{
echo "Voting Successfull";
$this->db->insert('votes',$_POST);
}
public function results()
{
echo "These are the results";
//$query = $this->db->get('votes');
$data = "hello";
$this->load->view('results_view', $data);
}
}
Results_view.php
<html>
<?php echo $data; ?>
</html>
$data should be an array or an object: http://codeigniter.com/user_guide/general/views.html
$data = array(
'title' => 'My Title',
'heading' => 'My Heading',
'message' => 'My Message'
);
$this->load->view('results_view', $data);
results_view.php
<html>
<?php
//Access them like so
echo $title.$heading.$message; ?>
</html>
In simple terms,
$data['a'] in controller becomes $a in your view. ($data won't exist in your view, only the index will become available)
e.g.
Controller:
$data['hello']='hellow world';
view:
echo $hello;
You just need to create a array, you using codeigniter right?
Example on controller:
$data['hello'] = "Hello, world";
$this->load->view('results_view', $data);
In de page "results_view" you just have to:
<?php echo $hello;?>
Obs: You can create n datas, just pay attention in the name and make it a array.
Obs²: To use the data use the key of the array with a echo.
The view wouldn't call the data 'data'
The controller would include an associative index (not sure if that's correct nomenclature) for data e.g 'stuff' looking thus $data['stuff']
You'd echo in the view so: echo $stuff; not echo $data;
I am a v lowly code fiddler but do really like CodeIgniter so excuse me if i've got this arse about tit.
One more thing - surely your constructor function is a bit of a waste. All that loading of libraries and helpers is done with the autoload file.
You can create property $data = []; inside CI_Controller(path: system/core/Controller.php) and store all data to show in view. U can load common data like languages, menu, etc in CI_Controller. Also u can add special data for view in controller. (example: $this->data['message'] = "Hello world";)
Finally, u can pass $this->data to view when load view (example: $this->load->view('view_name',$this->data);)
I hope this will help you
you can do it this way
defined array in controller
$data['hello'] = "hello";
and pass variable to view
echo $hello;
If you pass
$data = your code
$this->load->view('your-page', $data);
and get data on your view as
<?php echo $data;?>
It won't work because ci didn't understand this patern. If like to pass value form controller to view so you can try this -
controller -
$data['any-name'] = your values;
$this->load->view('your-page', $data);
then in your view you can get this data by -
<?php echo $any-name;?>
Hope this helps you.
In your controller you can pass
$data['poll'] = "Your results";
In your view you can call
echo $poll;
In controller:
$data["result"] = $this->login_model->get_login(); // Get array value from DB..
$this->load->view('login-form',$data); // Pass the array to view
In view:
print_r($result); // print the array in view file
Ok so I finally solved it. You should really have a model (it helps a lot)
In your model do something like
Model
class poll_model extends CI_MODEL {
function __construct() {
$this-load->database();
}
function get_poll {
$this->db->query("SELECT * FROM table");
$row = $query->row();
$obj = array(
'id' => $row->id
);
return $obj;
}
}
Now if you have more than an id say name of poll # you can add in array.
Now in your controller do
class Poll extends CI_Controller {
public function __construct()
{
parent::__construct();
$this->load->database();
$this->load->helper('form');
$this->load->model('poll_model');
}
public function index()
{
$data["a"] = $this->poll_model->get_poll();
$this->load->view('poll_view',$data);
}
And finally in VIEW put
<? echo $a["id"]; ?>
This is a big help. I figured it out by testing and it works for me.
I have seen all above answer so here is what I do when I have to load the data from the controller to my view.
To Pass the Data To the view from the controller:
public function your_controller(){
// Your Necessary Code
// You have the $data, $data2, $data3 to post to the view.
$this->load->view('your_view_directory or view_page',['data'=>$data, 'data2'=>$data2, 'data3'=>$data3... so on ]);
}
And At the View Side You can simply retrieve that data:
To Display You can simply use echo, print, print_r. And if you want to loop over it, you can do that as well.
In controller:
public function product(){
$data = array("title" => "Books", "status"=>"Read","author":"arshad","company":"3esofttech",
"subject":"computer science");
Data From Model to controller
$this->load->model('bookModel');
$result = $this->bookModel->getMoreDetailsOfBook();
**Add *$result* from model to *$data* array**
$data['tableRows'] = $result;
$data from Controller to View
$this->load->view('admin/head',$data);
And to access in view file
views/user.php
<?php echo $data;
foreach($tableRows as $row){ echo
$row['startData']; } ?>
Instead of
$data = "hello";
$this->load->view('results_view', $data);
Do
$data['hello'] = 'hello';
$this->load->view('results_view', $data);
In your controller file and controller will send data having hello as string to results_view and in your view file you can simply access by
echo $hello;
I passed parameter from view to controller via URL. Now I want to send it from controller to model so that I can use it to pick data from tables. Here is my code:
controller:
function view(){
if(isset($_GET['r'])) {
$rank = $_GET['r'];
}
$rank=$this->uri->segment($rank);
$this->load->model('names_rank');
$data=$this->names_rank->get_names($rank);
print_r($rank);
}
model:
function get_names($rank){
$this->db->select('u.*,v.*');
$this->db->from('unit_member u, Vyeo v');
$this->db->where('v.fno = u.fno');
$this->db->where('u.present = ""');
$this->db->where('v.rank', $rank);
$this->db->where('v.date_of_end="0000-00-00"');
$query = $this->db->get();
return $query->result_array();
}
this is the result:
A PHP Error was encountered Severity: Warning Message: Missing
argument 1 for Names_rank::get_names(), called in
C:\xampp\htdocs\unit\application\controllers\names.php on line 32 and
defined
This will work to send to model but your code isn't understandable for me, you re-declare the variable after setting it in the IF? are you trying to print_r() the output from the model?
I think you are trying to achieve this maybe?
function view() {
if(isset($_GET['r'])) {
$rank = $_GET['r'];
}else{
$rank = $this->uri->segment($rank);
}
$this->load->model('names_rank');
$data = $this->names_rank->get_names($rank);
print_r($data);
}
You can pass a Parameter to your model. First you have to call your model within your controller if you not enable it on autoload.
Your Model:
<?php
class AwesomeModel extends CI_Model
{
publif function do_work($param, $anotherParam)
{
//code here
}
}
Then your controller:
<?php
class AwesomeController extends CI_Controller
{
public function __construct()
{
/*
* load in constructor so not need to recall every time you want use it
* second parameter is model renaming (optional)
*/
$this->load->model('AwesomeModel', 'awe');
}
public function pass_data()
{
$this->awe->do_work($param1, $param2);
}
?>
Thats all.
I am trying to pass some Data using a link from the view to the Controller.
Controller:
public function details(){
echo $this->input->post('data_id');
$data['details'] = $this->wapi_db->details($this->input->post('data_id'));
$data['latest_news'] = $this->wapi_db->latest_news();
$data['main_content'] = "category/details";
$this->load->view('includes/template',$data);
}
View:
<a href=<?php.base_url().'wapi/details?data_id='6'; ?>
You could simply us Uri segmen, just like this:
your View Code for href.
<a href="<?php echo base_url() ?>wapi/details/6";
And to GET the value you passed from view to controller
You should do something like this in your controller
public function details(){
$data_id = $this->uri->segment(3); //this where you get you value from your link
...//rest of your code
}
I recommend you to use this link on your view
<a href=<?php.base_url().'wapi/details/6'; ?>
Then on your controller you just wait for the parameter on the function
public function details($data_id){//<- the parameter you want
$data['details'] = $this->wapi_db->details($data_id);
$data['latest_news'] = $this->wapi_db->latest_news();
$data['main_content'] = "category/details";
$this->load->view('includes/template',$data);
}
If your URI contains more than two segments they will be passed to your method as parameters.
From Codeigniter Controllers Guide
You need to use
$this->input->get('data_id')
because you're passing data via GET method.
So your code should be:
public function details(){
echo $this->input->get('data_id');
$data['details'] = $this->wapi_db->details($this->input->get('data_id'));
$data['latest_news'] = $this->wapi_db->latest_news();
$data['main_content'] = "category/details";
$this->load->view('includes/template',$data);
}
Here the docs: http://www.codeigniter.com/user_guide/libraries/input.html
Being new to CI and PHP, especially arrays, I'm struggling with documentation and tutorials. Please don't point me to the documentation, I have been reading it all day.
As I understand it, I need a view (form), controller and model. The model connects to my default DB connection via a class/function (my DB is where my drop-down list country data is stored), it returns an array, and finally the model parses the array to the form.
Where I struggle is how to parse the array along to the view. Because I'm dealing with 3 files, to output one html file, context is really important, as is syntax. I asked this earlier today and nearly lost my mind as the two answers I got were fragmented and out of context. They were helpful but assumed I knew a lot more than I do.
In other words, please be explicit, because a syntax oversight or knowledge assumption could have me scratching my head for hours. Thanks in advance!
Here's my attempt which isn't working, basically whatever variable I use in the view returns a variable undefined error...
View/Form...
<body>
<?php echo form_open('form'); ?>
<h5>Country</h5>
<?php echo form_dropdown('', $data, '');?>
<div><input type="submit" value="Submit" /></div>
<?php echo form_close() ?>
</body>
My controller...
<?php
class Form extends CI_Controller {
function index()
{
$this->load->helper(array('form', 'url'));
$this->load->library('form_validation');
$this->load->model('country');
$data['country'] = $this->country->get_country();
$this->load->view('myform', $data);
if ($this->form_validation->run() == FALSE)
{
$this->load->view('myform');
}
else
{
$this->load->database();
$sql = "INSERT INTO donations (country) VALUES (
".$this->db->escape($this->input->post('country')).";
$this->db->query($sql);
echo $this->db->affected_rows();
$this->load->view('formsuccess');
}
}
}
?>
My model...
<?php
class Country extends CI_Model
{
function get_country() {
$this->load->database();
$sql = ('select * from countries');
return $this->db->query($sql)->result();
}
}
?>
Controller
You have $data['country'] with data from database, but your are not adding the $data to the view.
Use $this->load->view('myform', $data); to pass the data to the view.
View
I believe codeigniter extracts the key in the $data:
so simply test in the view what's there var_dump($data); and var_dump($country) and
then build the form_dropdown.
Use echo form_dropdown('country_dropdown', $country, ''); in your view.
Model
Adjust the model to return the array structure needed for form_dropdown.
function get_country() {
$this->load->database();
$sql = ('select * from countries');
$query = $this->db->query($sql);
foreach($query->result_array() as $row) {
$data[$row['id']] = $row['name'];
}
return $data;
}
I want to call a function in another controller. for example if user try to log in with incorrect parameter then the application will redirect to another controller and passing a variable (array).
class User extends Controller {
function User()
{
parent::Controller();
}
function doLogin()
{
$userData = $this->users->getAuthUserData($user,$password);
if(empty($userData)){
// this is where i need to call a function from another controller
}else{
echo 'logged in';
}
}
}
is it possible passing a variable using redirect() function in url helper?
Yes you can use redirect('othercontroller/function/'.url_encode($data), 'location');
That should work.
edit: you could also put the code in a helper.
<?php
$array = array('foo'=>'bar', 'baz'=>'fubar', 'bar' => 'fuzz');
$json = json_encode($array);
$encoded_json= urlencode($json);
/* now pass this variable to your URL redirect)
/* on your receiving page:*/
$decoded_json= urldecode($encoded_json);
/* convert JSON string to an array and output it */
print_r(json_decode($decoded_json, true));
?>
this code:
takes an array, converts it to a JSON encoded string.
we then encode the $json string using url_encode. You can pass this via the url.
Decode this URL, then decode the JSON object as an associative array.
might be worth a try
If you want to call a function of one controller from another controller then you can use redirect Helper.
For example:
class Logout extends CI_Controller {
function index() {
session_destroy();
redirect('index.php/home/', 'refresh');
}
}
it will call another contoller.