can anyone give me an example on how to create Sessions and write data to it. I've seen syntax on how to write data to a session using write command. But how to create a session and retrieve the values in it.
In my application, I have two data, form_id and user_id that needs to be used in all the page requests. So how do I save it as a session variable and use it across the application?
EDIT
function register()
{
$userId=$this->User->registerUser($this->data);
$this->Session->write('User.UserId',$userId);
//echo "session".$this->Session->read('User.UserId');
$this->User->data=$this->data;
if (!$this->User->validates())
{
$this->Flash('Please enter valid inputs','/forms' );
return;
}
$this->Flash('User account created','/forms/homepage/'.$userId);
}
How to use the session variable 'User.UserId' instead of $userId in $this->Flash('User account created','/forms/homepage/'.$userId);
And can I use this variable in all my view files,because in all the page requests I also pass the userId?
EDIT 2
I have 2 controllers,user and form. I write the userid to a session variable in the users_controller. I have a view file called homepage.ctp,whose action is in the forms_controller. Now how can I use the session variable defined in the users_controller in the homepage? Sorry if I am asking silly questions. I went through the cakebook,but my doubts weren't cleared. I'm also trying trial and error method of coding,so please help me.
EDIT 3
I have a session variable 'uid' which is the user id in the home page action of a controller.
$this->Session->write('uid',$this->data['Form']['created_by']);
I need the same variable in the design action method of the same controller.
When I give
$uid=$this->Session->read('uid');
echo "uid: ".$uid;
the value is not echoed.
Can't I use the session variable in the same controller?
The bakery is your best friend:
http://book.cakephp.org/view/398/Methods
All your session read/writes belong in the controller:
$this->Session->write('Person.eyeColor', 'Green');
echo $this->Session->read('Person.eyeColor'); // Green
In cake php you can create session like this
$this->request->session()->write('user_id', 10);
and you can read session value like this
echo $this->request->session()->read('user_id');
Super Simple!
You don't have to write any code to create session, they are already built in. Then you just use the read and write sessions as mentioned above. Also see here for more details:
http://book.cakephp.org/2.0/en/core-libraries/components/sessions.html
Used in Controllers
http://book.cakephp.org/2.0/en/core-libraries/helpers/session.html
Used in Views
cakephp 4 example of session usage in controllers, views and cells
$session = $this->request->getSession();
$session->write('abc', 'apple');
echo $session->read('abc');
In this case it would be:
$this->Flash('User account created','/forms/homepage/'.$this->Session->read('User.UserId'));
and your second question is anwered by Jason Miy (http://api.cakephp.org/class/session-helper). You can simply use this in your view:
$userId = $session->read('User.UserId');
Reading the appropriate cookbook pages slowly and carefully usually helps a lot...
I found out the reason why the uid wasn't being echoed(edit 3 part of the question).
It is due to a silly mistake, had a white space after the end tag ?> in the controller. Now it is working fine.
when I have strange session behavior, and this help me.
MODEL:
function clearAllDBCache() {
$db =& ConnectionManager::getDataSource($this->useDbConfig);
$db->_queryCache = array();
}
`
Acess your Helper SessionHelper in lib/Cake/View/Helper/SessionHelper.php and add the method:
public function write($name = null) {
return CakeSession::write($name);
}
Related
I have laravel controller like this:
public function postSessionTopic() {
$article_id = Input::get('article_id', 0);
$comment_id = Input::get('comment_id', 0);
\Session::set('page_topic_id', $article_id);
\Session::set('page_comment_id', $comment_id);
\\comment - I have tried \Session::put too, but that doesn't change anything
}
I use it, when user click on a article. I print_r out my session variable in this controller and everything looks fine. But after that I refresh my page, and there I read value from session, and sometimes it load old value or doesn't load anything. I can't understand why, because in controller i can see, that correct value is saved!
In my page, i get that value like this:
\Session::get('page_topic_id', 0)
Probably you do something wrong. You should make sure that in both cases you uses exactly same domain (with or without www).
In this controller when you don't have any input you set to session variables 0. This can also be an issue if you launch this method when you don't have any input.
You could try with adding this basic route:
Route::get('/session', function() {
$page_topic = Session::get('page_topic_id', 1);
$page_comment = Session::get('page_comment_id', 1);
echo $page_topic.' '.$page_comment.'<br />';
$article_id = $page_topic * 2;
$comment_id = $page_comment * 3;
Session::set('page_topic_id', $article_id);
Session::set('page_comment_id', $comment_id);
});
As you see it's working perfectly (but you need to remove session cookie before trying with this path).
You get
1 1
2 3
4 9
8 27
and so on. Everything as expected
Answer was - two ajax at one time. Don't do that, if you store something in session.
The session in Laravel doesn't consider changes permanent unless you generate a response (and that's the result of using symphony as it's base). So make sure your app->run() ends properly and returns a response before refreshing. Your problem is mostly caused by a die() method somewhere along your code or an unexpected exit of PHP instance/worker.
This is probably not your issue but if you are storing your laravel session in the database their is a limit on how large that value can be. The Laravel session migration has a field called "payload" that is a text type. If you exceed the limit on that field the entire session gets killed off. This was happening to me as I was dynamically adding json model data to my session.
Schema::create('sessions', function (Blueprint $table) {
$table->string('id')->unique();
$table->text('payload');
$table->integer('last_activity');
});
How much UTF-8 text fits in a MySQL "Text" field?
The default JUser::setParam() method sets parameters only to the session. Is is possible somehow to store parameters not in the session, that they would be always available? I also found in users table field params, which stores some parameters for current user, but don't know how to add data there...
Have you tried to save the object after adding your param?
$user = JFactory::getUser();
$user->setParam($key, $value);
$user->save;
An easy and comfortable approach would be to use the popular Community Builder Extension which lets you define custom user fields in the administrator backend. It has an API to obtain the CB User Object and to write and read those fields which get stored in the DB as opposed to the session. Simple example without knowing your Joomla/CB version (works with Joomla 2.5 and CB 1.8) and the place (site, admin, external) where this should be executed (assuming your parameter is named customParam and the user id is 42):
cbimport( 'cb.field' );
$mosCbUser = CBUser::getUserDataInstance(42);
// read value
$customParameter = $mosCbUser->customParam;
// write value
$mosCbUser->customParam = 'newnew';
$mosCbUser->store();
/* write value to DB directly with optional boolean third parameter
specifing whether to trigger the user update plugins
like onBeforeUserUpdate or onAfterUserUpdate
*/
$mosCbUser->storeDatabaseValue('cb_adresse', 'new address', false);
be sure to be in CB plugin context, if not already the case, include e.g. like
global $_CB_framework, $_CB_database, $ueConfig;
$app = JFactory::getApplication();
include_once( $app->getCfg( 'absolute_path' ) . '/administrator/components/com_comprofiler/plugin.foundation.php' );
I am developing a website with Yii.
I have a button in the page. I need to set a session variable when user clicks it and get the session value when user clicks on another button.
How can I do that?
Use CWebUser state methods
//set session variable
Yii::app()->user->setState("state_name", "value");
//check session variables
Yii::app()->user->hasState("state_name");
//get session variable
Yii::app()->user->getState("state_name");
//delete session variable (thanks #Kailas)
Yii::app()->user->setState("state_name", null);
you can use CWebUser's setState.
Yii::app()->user->setState('key', 'value');
Simple
Yii::app()->session['var'] = $encrypted_txt;
$session = Yii::$app->session;
// get a session variable. The following usages are equivalent:
$language = $session->get('language');
// set a session variable. The following usages are equivalent:
$session->set('language', 'en-US');
// remove a session variable. The following usages are equivalent:
$session->remove('language');
// check if a session variable exists. The following usages are equivalent:
if ($session->has('language'))
I'm currently trying to display all online users on my webpage using the php session variables. To do this, whenever a user logs in or out, a column in a database gets set to "online" or "offline".. However this doesn't entirely work since the database doesn't get updated when the user closes their browser (and therefor destroys the session).
So is there another way of checking if a certain sessionid is set??
Currently I am setting the session like this:
session_start();
$_SESSION['username']="Example Username";
To check from the current users page if there is a session variable set we can simply use:
if(isset($_SESSION['username']))
{
//username is set
}
But if we need to check if a specific user is online, how do we get for instance an array of all the session variables that have been set? e.g.
//Get all $_SESSION['username'] vars
//loop through array and check for specific $_SESSION
for($i=0; ... )
{
if( $_SESSION['username'][$i] == "User 1" )
{
//do something
}
}
From all that I've read so far, there doesn't seem to be a way to get an array of all sessions on your page..
So is there a better way of doing it, e.g. how do facebook, twitter, etc handle this stuff?
Thanks for your help!
One solution is to store a timestamp in your database in addition to the online/offline flag that records the last time a user accessed any of your website resources. Then you might just consider them offline after 15 minutes or some other constant value.
The other solution is to play with the callbacks here http://php.net/manual/en/function.session-set-save-handler.php where I think you can handle the gc callback and set the offline flag in your database.
If you search on that page for class SessionDB or go here it looks like somebody has implemented some version of this already in a custom class!
you can use a simple update query
for example you have a table users and in that you have a column called status(online/offline)
on your login.php use
<?php
//your user verification code
if(variable that holds your sql query){
$user_status=('UPDATE user SET status= online WHERE email="'your user email selector'")
}
then on the logout do a similar script just change the online value to offline
You could try this:
foreach ($_SESSION as $sessionKey => $sessionValue)
{
if( $sessionKey == 'username' ) && ( $sessionValue == 'User 1' )
{
//do something
}
}
Which is right? notice in the second option, I'm passing the form values using the $_POST variable. Whereas the first option, I call and assign variables for each form field.
I've seen this ...
<validation code> ....
$todo = array(
'name'=>$this->input->post('title'),
'description'=>$this->input->post('description')
);
$this->Todo_model->add($todo);
But I've also seen the following ...
$records['email'] = "trim|required|min_length[4]|xss_clean";
...
...
$this->validation->set_rules($records);
if ($this->validation->run())
{
$this->account_model->saveAccountSettings("sam", $_POST);
$this->session->set_flashdata('message', 'Done!');
redirect('account/settings');
} else {
...
}
I tend to use a mix of your two examples. I'm pretty sure things like trim won't modify the actual post data, so you can only take advantage of it if you go through the validation framework to get the data. I actually never access POST directly anymore using CI.
Plus I'd be worried in your second example about just shoving POST into my model. What happens if someone clever adds "lastname" to the post data sent in and your db column is named the same? Even though you weren't expecting to deal with that data now you've got unvalidated data coming in. That's why I employ part of your first example and manually pull out the items I want to save into an array first.
So I'd recommend a hybrid.
Normally my code looks something like this:
$fields['email'] = "trim|required|valid_email|min_length[4]|xss_clean";
...
...
$this->validation->set_rules($fields);
if ($this->validation->run())
{
$account = new array();
$account['id'] = $accountId; //wherever you get the Id from
$account['email'] = $this->validation->email;
$this->account_model->save($account);
$this->session->set_flashdata('message', 'Done!');
redirect('account/settings');
} else {
...
}
The first option is better easy to read or trace
Pass values using post variables is better option
What the real benefit to use this
$account['email'] = $this->validation->email;
Instead of
$account['email'] = $this->input->post('email');