How to pass data from controller 1 to controller 2 in codeigniter.
I have this scenario.
Controller 1 is using $id which are unique.
controller1/view/1
controller1/view/2
controller1/view/3
and I need to get those $id and pass it everytime on my controller2. So in my controller 2, I need to get the $id which is 1,2,3. I don't want to use session as it's not gonna work and I don't want to use segment also as it's giving error if last parameter is empty. Thanks a lot.
Try this on your controller, whenever your last parameter is empty its not giving an error
function view($id=NULL){
}
Related
I have a string inside a view that I need to pass to a second view.
Inside view1 I have
route('admin.olt.add', $id, $resp)
where $resp is the parameter I need to pass to the second view. My route file calls the controller that returns the second view
Route::get('/olt/{id}/add', 'OLTController#config_parameters_onu')->name('olt.add');
Is there any way where I can pass this parameter without adding it to the url?
I don't know if I fully understand your issue but as I got it, you can add this variable to a session and then fetch it whenever you want in any view for instance
to add the variable to the session
session(['resp' => $resp]);
to fetch it back
session('resp')
and here is the full docs for better guidance
Hope that is what you looking for
you should use an array of more than one parameter
route('admin.olt.add', ['id'=>$id, 'resp'=>$resp]);
I am trying to figure out how to access two (or more) parameters passed to a Laravel controller. I know how to create the route, and the URL is created correctly, but then I can only access the first passed parameter in my controller.
Route:
Route::get('managers/{id}/{parameter2}', array('as'=>'dosomething', 'uses'=> 'ManagersController#dosomething'));
where the first parameter is obviously the $id for managers, and the second parameters is to be processed by the controller.
View:
Do Something
generates the URL:
http://domain/managers/1/2
where 1 is easily accessed as the $id for managers, but when I try to access the 2nd parameter "2" using $parameter2, e.g. using a simple return: "id=$id and parameter2=$parameter2" statement, I get an "unidentified variable: $parameter2" error.
What am I doing wrong?
Is there a better way to pass multiple parameters? I'm especially asking the "better way?" question because what I want to do is use the 2nd parameter to change a value in a database table, and using a 'get' method, somebody could change the parameter value in the URL and therefore cause mischief. Must I use a 'post' method? I'd love to be able to use a link, since that works much better with the design of my application.
Thanks!
I was asked to include the controller, which I'm happy to do. Initially, just for testing, as I mentioned, my controller was a simple return to display the values of the two passed parameters. But here is what I want to be able to do, including the actual name of the function ("update_group" rather than "dosomething") --
ManagersController:
public function update_group($id)
{
DB::table('groups')->where('id','=',$parameter2)->update(array('manager_id'=>$id));
return Redirect::route('managers.show', array('id'=>$id));
}
The update table works perfectly if I replace $parameter2 with an actual value, so that syntax is fine. The issue is that Laravel says that $parameter2 is an undefined variable, despite the fact that the URL contains the value of $parameter2 as you can see above.
And since it occurs to me that the answer to this may involve adding a function to the Manager model, here is the current
Manager.php
class Manager extends Eloquent {
protected $table = 'managers'; ... (mutator and error functions)
}
Just change
public function update_group($id)
to
public function update_group($id, $parameter2)
All looks ok in your route. Seeing the controller code would help, but likely, you may not have a second parameter in your controller's dosomething() method.
public function dosomething($id, $parameter2){
var_dump($id).'<br />';
var_dump($paremter2);
}
If that isn't the case, you can try dumping it from the route's callback to further diagnose.
Route::get('managers/{id}/{parameter2}', function($id, $parameter2)
{
var_dump($id).'<br />';
var_dump($paremter2);
});
Depending on your use case, you can pass them in a query string like so: but it isn't really the 'best way', unless you're doing something like building an API that won't use the same variables in the same order all the time.
/managers?id=1¶mter2=secondParameter
var_dump(Request::query('id')).'<br />';
var_dump(Request::query('paramter2'));
I have 2 controllers, let's call them c1 and c2. Now I want to call a function in c2, Let's say actionC2, from a function in c1.
I tried something like this:
$c2_instance = new c2();
$c2_instance->actionC2();
but it won't work. I get this error: Missing argument 1 for CController::__construct().
What am I doing wrong?
EDIT: maybe its important to say that it falls on the first line
You should not call a controller from another controller . You should redirect using this
$this->redirect(array('controller/action'));
And if you do not have exactly no way other that than , reconsider your design . Solve the problem , do not try to hide it. It will bite back you anyway.
As #user488074 said, your controller must have an argument that it is looking for when you create an instance of it. Go to that controller and look at what it is looking for in the contstruct function. If you don't want to pass an argument all the time for this controller then add something like this to the construct function argument
public function foo($argument = NULL){
}
so it has a default value if you don't want to pass something.
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 am trying to pass a variable from a view (of mobile model) to a different controller (of inventory model), using the chtml:button with this code
echo CHtml::button(
'Sell It',
array('submit' => array('inventory/create', array('id'=>$data->id)))
);
Now how do I access the $id variable in the Inventory controller, so that I can prepopulate the create view with details corresponding to the passed 'id' variable of the mobile model.
In your inventory/create controller action do checking before getting the id like this :-
if (isset($_REQUEST['id'])) {
$id = $_REQUEST['id'];
$this->render('create',array('model'=>$inventory, 'id'=>$id));
}
else{
$this->render('create',array('model'=>$inventory);
}
If you are trying to come up an update/edit form with the values prefilled based on the Id passed then you should have to go through the CRUD options available within YII.. This is much better way to handle record updation and its easy too . See this topic for furhter info..
http://www.yiiframework.com/doc/guide/1.1/en/quickstart.first-app
In your inventory/create controller action do a test for $_GET['id'] something like:
$id = (#$_GET['id']) ? : DEFAULT_VALUE;
$this->render('create',array('model'=>$inventory, 'id'=>$id));
and then you pass the data through to the view by passing an array of variables you want to make available.
(you would want to filter the input better, this is just a sample -- using filter_input or some other method and define a default value and/or some test for it being null/invalid)
in your controller you can get the variable by giving an argument to your controller method like this:
public function actionCreate($id){
$id = isset($id)?$id:NULL; // Or whatever, you can access it like this.
}
You don't have to use $_GET, and yii has already done some security checks on the value.