Using ajax function working with sessions. In controller with ajax action i'm setting the session values using $this->session->set('coupons',$data). After setting this session i'm not able to get in another controller file already added session.Can you pls advice me.
public function action_applypcode()
{
$this->auto_render = false;
$this->session->set('coupon_details', $restcode);
}
public function action_receipt()
{
$coupon_details = $this->session->get('coupon_details');
print_r($coupon_details);
//Here getting empty session values
}
What is $restcode?
You shouldn't have any problem on setting session values through ajax or normal request, they work equally, the only diff is that you don't want the layout form ajax calls.
Are you using another lib or module that could initialize a session too? Search in your external modules for $_SESSION, sometimes that can be the problem. If that's the problem, try using Session::instance() at the first line of your template controller.
Btw, I don't remember kohana having an attr for the session in the controllers, also you can try using Session::instance()->set and ->get , maybe that could help too.
Regards!
Related
In my controller i used this way. i want to pass a variable data to my index function of the controller through redirect
$in=1;
redirect(base_url()."home/index/".$in);
and my index function is
function index($in)
{
if($in==1)
{
}
}
But I'm getting some errors like undefined variables.
How can i solve this?
Use session to pass data while redirecting. There are a special method in CodeIgniter to do it called "set_flashdata"
$this->session->set_flashdata('in',1);
redirect("home/index");
Now you may get in at index controller like
function index()
{
$in = $this->session->flashdata('in');
if($in==1)
{
}
}
Remember this data will available only for redirect and lost on next page request. If you need stable data then you can use URL with parameter & GET $this->input->get('param1')
So in the controller you can have in one function :
$in=1;
redirect(base_url()."home/index/".$in);
And in the target function you can access the $in value like this :
$in = $this->uri->segment(3);
if(!is_numeric($in))
{
redirect();
}else{
if($in == 1){
}
}
I put segment(3) because on your example $in is after 2 dashes. But if you have for example this link structure : www.mydomain.com/subdomain/home/index/$in you'll have to use segment(4).
Hope that helps.
Use session to pass data while redirecting.There are two steps
Step 1 (Post Function):
$id = $_POST['id'];
$this->session->set_flashdata('data_name', $id);
redirect('login/form', 'refresh');
Step2 (Redirect Function):
$id_value = $this->session->flashdata('data_name');
If you want to complicate things, here's how:
On your routes.php file under application/config/routes.php, insert the code:
$route['home/index/(:any)'] = 'My_Controller/index/$1';
Then on your controller [My_Controller], do:
function index($in){
if($in==1)
{
...
}
}
Finally, pass any value with redirect:
$in=1;
redirect(base_url()."home/index/".$in);
Keep up the good work!
I appreciate that this is Codeigniter 3 question, but now in 2021 we have Codeigniter 4 and so I hope this will help anyone wondering the same.
CI4 has a new redirect function (which works differently to CI3 and so is not a like for like re-use) but actually comes with the withInput() function which does exactly what is needed.
So to redirect to any URL (non named-routed) you would use:
return redirect()->to($to)->withInput();
In your controller - I emphasise because it cannot be called from libraries or other places.
In the function where you are expecting old data you can helpfully use the new old() function. So if you had a key in your original post of FooBar then you could call old('FooBar'). old() is useful because it also escapes data by default.
If however, like me, you want to see the whole post then old() isn't helpful as the key is required. In that instance (and a bit of a cheat) you can do this instead:
print'<pre>';print_r($_SESSION['_ci_old_input']['post']);print'</pre>';
CI4 uses the same flash data methods behind the scenes that were given in the above answers and so we can just pull out the relevant session data.
To then escape the data simply wrap it in the new esc() function.
More info would be very helpful, as this should be working.
Things you can check:
Is your controller named home.php? Going to redirect(base_url()."home"); shows your home page?
Make your index function public.
public function index($in) {
....
}
I have simulatneous AJAX requests on codeIgniter with all of them session update like so:
function ajax1($value)
{
$this->session->set_userdata('foo', $value);
}
function ajax2($value)
{
$this->session->set_userdata('bar', $value);
}
But sometimes because of MySQL concurrency, one variable or the other is not updated, I suppose because one method gets overwrites the new value of the other method with the old value if grabbed from the db.
I cannot update the 2 sessions at the same time as they do completely different things and I don't know which ones will be called, as the page is dynamic and might have one or several of these method calls.
Anybody ran into this in the past and has a way of going around that problem?
I think this problem was fixed in the latest version of codeIgniter, but if you are still using an old one, try to replace system/libraries/Session.php with a new one, or you can just override the Session Library like follow:
application/libraries/MY_Session.php
class MY_Session extends CI_Session
{
function sess_update()
{
if (!$this->CI->input->is_ajax_request())
return parent::sess_update();
}
}
I'm creating an API using Cakephp 2.x that needs a POST request to post some data to the server however when I'm posting (using Postman) to 127.0.0.1/appname/api/confirm with code=123 in the post parameters my $_POST is an empty array.
My route works, I can see variables that I declare and output within the controller, and I've checked that the parameters are being passed in the request by using the chrome developer console checking the network data.
Router::connect('/api/confirm', array('controller' => 'awesomeController', 'action' => 'confirm'));
<?php
class AwesomeController extends AppController {
public function confirm() {
$this->autoRender = false;
$this->layout = 'ajax';
pr($_POST);
}
}
?>
I've got my endpoints for the get requests to work just fine, it only seems to be POST data.
Not quite sure why $_POST wouldn't even be available and I'm sure it's something ridiculously silly I've overlooked!
** Edit **
I've attempted the following without success:
$this->request->query
$this->request->data
$this->request->params
I have another method whereby I use GET along with ?parameter=value etc and I am able to use one of the above calls to retrieve the data.
In this case, the variables should be in
$this->request->query
Try using URLs like api/confirm?code=123, and they will be in request->query
I may be wrong since I am pretty new to cakePHP but since you set:
$this->autoRender = false;
so the view is not rendered automatically to set the view to ajax layout.
Isn't it necessary to call:
$this->render();
After setting the layout as said here?
Well, hope it helps.
If anybody come here one day by googling, just had the same problem.
Had a REST Controller, called with URL /rest/something/cool.json
Method called inside RestController.php, had output, but no POST, no REQUEST.
Tried with code=123, sending direct JSON, the only way to make it works was to set Content-Type to application/json and to send actual working JSON : Cake seems to validate prior to anything, sending raw data seems useless.
I have just started learning Code Igniter .
I want to know how can I pass a variable from one controller(first_cont.php) to other controller (second_cont.php) ?
Any help would be appreciated .
Thanks in Advance :)
It will depend on the circumstances. If you want to retain the data for some time, then session data would be the way to go. However, if you only need to use it once, flash data might be more appropriate.
First step would be to initialise the session library:
$this->load->library('session');
Then store the information in flash data:
$this->session->set_flashdata('item', $myVar);
Finally, in the second controller, fetch the data:
$myVar = $this->session->flashdata('item');
Obviously this would mean you'd have to either initialise the session library again from the second controller, or create your own base controller that loads the session library and have both of your controllers inherit from that one.
I think in codeigniter you can't pass variable, between two different controller. One obvious mechanism is to use session data.
Ok, here is something about MVC most will readily quote:
A Controller is for taking input, a model is for your logic, and, a view is for displaying.
Now, strictly speaking you shouldn't want to send data from a controller to another. I can't think of any cases where that is required.
But, if it is absolutely needed, then you could simply use redirect to just redirect to the other controller.
Something like:
// some first_cont.php code here
redirect('/second_cont/valuereciever/value1')
// some second_cont.php code here
public function valureciever($value){
echo $value; // will output value1
}
In Codeigniter there are many way to pass the value from one controller to other.
You can use codeigniter Session to pass the data from one controller to another controller.
For that you have to first include the library for session
$this->load->library('session');
Then You can set the flash data value using variable name.
// Set flash data
$this->session->set_flashdata('variable_name', 'Value');
Them you can get the value where you want by using the codeigniter session flashdata
// Get flash data
$this->session->flashdata('variable_name');
Second Option codeigniter allow you to redirect the url from controll with controller name, method name and value and then you can get the value in another controller.
// Passing the value
redirect('/another_controller_name/method_name/variable');
Then you can get the value in another controller
public function method_name($variable)
{
echo $variable;
}
That all....
If you are using session in the first controller then dont unset that session in first controller, instead store the value which you want in the other controller like,
$sess_array = array('value_name1' => 'value1', 'value_name2' => 'value2');
$this->session->set_userdata('session_name', $sess_array);
then reload this session in the other controller as
$session_data= $this->session->userdata('session_name');
$any_var_name = $session_data['value1'];
$any_var_name = $session_data['value2'];
this is how you can pass values from one controller to another....
Stick to sessions where you can. But there's an alternative (for Codeigniter3) that I do not highly recommend. You can also pass the data through the url. You use the url helper and the url segment method in the receiving controller.
sending controller method
redirect("controller2/method/datastring", 'refresh');
receiving controller method
$this->load->helper('url');
$data = $this->uri->segment(3);
This should work for the default url structure. For a url: website.com/controller/method/data
To get controller $this->uri->segment(1)
To get method $this->uri->segment(2)
The limitation of this technique is you can only send strings that are allowed in the url so you cannot use special characters (eg. %#$)
I have a CI page that will load to a div in view file, using jQuery. Using switch(page_parameter), I control what is showing from the page.
When I call the page for 3rd time, I set a value to the class array.
But when I call the 4th time, the array become empty.
I was wondering, is it actually possible to use the class property to store value that can be used after page re-access? Or something missing in my head?
I know that using session is not a good idea, since the real array is a big chunk of serialized xml.
Here's my code:
class MyClass extends MY_Controller
{
public static $pitems = array();
function Hotel(){
parent::MY_Controller();
}
function new_campaign(){
$params = $this->uri->uri_to_assoc();
switch($params['step']){
case '3' : self::$pitems = array("test","another"); //here the class array was set successfully
$this->load->view('viewer');
break;
case '4' : print_r(self::$pitems); //here the array is empty
break;
}
}
In the viewer page, there's a call to the page:
Next page
Same issue also with $this->
What am i missing here?
Thanks in advance~
edit:
I saw a script that has similar scenario. it successfully reused the variable set in the constructor, instead of treating it as a class variable. i'll look thorough to confirm this, but for now, i'll close this thread. Thanks Chris for sharing.
Im not really sure what your trying to do but I have users jQuery post()/get()/ajax() many of times in CI and have had no problems. So despite not knowing or understanding what your trying to do. I thought I'd at least say I know loading data without refresh in CI through something like jQuery isn't an issue. Example on system I built on CI had a twitter like feed of tweets where jQuery on a timer was polling for new data and coming back with it each time accordingly if something new was to be shown.