I am trying to save some debug data within my model, which will then be appeded to a debug variable $this->debug_data , which was declared public within the controller.
It seems the variable scope for the variable is limited to just controller and cant be set inside the model.
is there anyway i can do this.
I can do this fine within my custom 'libraries' which are being called within the same controller.
To be able to access a property of the currently loaded controller from within a model in CI you'll need to do the following:
either in your Models specific method or within its constructor put:
$this->CI = & get_instance();
Then say you'll be able access your debug_data with:
$this->CI->debug_data;
Hope this helps!
Related
I have one module Foo in my codeigniter HMVC. Also I have an api controller inside my application/controllers. I want to load a model inside application/module/foo/models from application/controllers/testapi
I have tested it by autoload as
$autoload['model'] = array('foo/Foo_model');
and called from testapi
$this->load->model('Foo_model');
But its not working
Try
$this->load->model('foo/foo_model');
from your controller.
then call model's function like this
$this->foo_model->function_name();
save model in application/modules/foo/models/Foo_model.php
CodeIgniter loads all possible models from application/models, I would suggest you modify the path of your models to something like application/models/modules with this you can load your model using
$this->load->model('modules/foo/Foo_model')
If you do want to retain your folder structure, I suggest you look at the constant paths of CodeIgniter and start modifying them to your will (although this is not really recommended).
I need to call a controller say 'faq_view' inside admin controller as the URL structure admin/faq_view like this how I can do this?
e.g:
site.com/maincontroller/function
site.com/maincontroller/othercontroller/function
Then, just redirect the page. Else if you want to just call the function, call it via AJAX.
It depends what you exactly want to do. If you want to just invoke the function, its not the right way. Controller as it defines itself controls the flow of the pages that comes on sequence. Controller is responsible to send commands to its associated view to change the view's presentation of the model.
So, if you are saying you want to call controller within another controller, that should mean you are about to redirect to another page.
Updated answer:
Just assume you have new_function on maincontroller that calls the function from othercontroller. The function does not need to be defined on othercontroller.
Add the following line on routes.php.
$routes['maincontroller/new_function'] = 'othercontroller/new_function';
Now, you can call the function of othercontroller as maincontroller/new_function.
You can always call a controller inside another controller, but this only works for calling one controller as far as I have tried. Let's say you are trying to load a controller inside a controller. You can try this:
$this->load->library('../controllers/myothercontroller');
Then do this:
$this->myothercontroller->function_name();
That's it! You can now access any function inside myothercontroller (controller) in your current controller. I hope this helps too.
Your controllers are part of the presentation layer and should not contain application logic. That means you should never need to call a controller from another controller, instead refactor your application and move the domain logic to the model layer.
Now if you have a method that you need in multiple controllers, say for example you need a template method that automatically adds your header and footer views.
If that is the case, create a base class that your controllers extend.
If you are talking about just a routing issue, then just use the routes file for that. I don't like the CI automatic routing and it should be avoided as it will result in duplicate URLs for the same resource.
Following the tutorial how to create a joomla 2.5 component I'm stucked to pass arguments from view.html.php to my model.
$items = $this->get('TableData');
and my TableData model would expect to get the following arguments
public function getTableData($table, $index_column, $columns) {}
You can not do this using the view's get method. Instead you would have to grab the model into the view and call the function directly in the view:
$model = $this->getModel();
$items = $model->getTableData($table, $index_column, $columns);
Alternately, you could create different entry points in the model that would be able to figure these input options either from state information or preset. Many would argue that this would lead to a better application design, since using my code above is putting what should be model logic in the view.
This is just an addon to David's answer.
Because most of the data usually comes from POST / GET methods, depending on your application, you may want to look at how loadFormData() from loadFormData JModelForm or populateState gets overridden in specific Joomla components.
Basically the state of model is set directly from POST data, using JInput.
Also, although it's not a rule or something, 3 parameters is a maximum I would pass to a method. For flexibility I would rather pass an array with can be later extended without changing the method signature.
In a controller class I have this function:
public function index(){
$this->load->helper('url');
$data['title'] = 'News archive';
$this->load->view('news/index', $data);
}
I load helper url because I'm using anchor() in news/index. So seems like it's enough to load helper in the parent function, and I don't have to load it inside news/index.
So my question is what's going on underneath CI that lets me do this? Is load->view a function, or is it pasting the result of executing news/index on $data? How is load->view aware of helper url having been loaded in index? I'm still trying to make sense of how the CI framework works.
Also what would be the best place to load helper, in the constructor, or in each function as we need it?
Also what would be the best place to load helper, in the constructor, or in each function as we need it?
As a rough rule of thumb;
If you use the helper once in a controller - place it in that specific function
If you use the helper in multiple places in a controller - place it in that controllers constructor
If you use the helper in multiple places in multiple controllers - place it in the 'autoload' section once.
you can get all the answer if u go through the Loader Class in codeigniter...
path >> system/core/loader.php
everything that is done is here....
and for ut last question . according to the user guide
http://ellislab.com/codeigniter/user-guide/libraries/loader.html
loader, as the name suggests, is used to load elements. These elements can be libraries (classes) View files, Helpers, Models, or your own files.
so since it just loads the elements...
i usually(prefer) loading it in each function where needed. (unless i need the same elements in other functions too)
I have a Locations controller and Location model
I want to use the the Location model in another controller but calling
geddy.models.Locations.all(...);
does not work. It says Locations is undefined.
How do I make it load the model manually? Or should I create a function in the Locations controller to grab the data using a request on the client or a call directly to the controller on the sever?
Looks like you're pluralizing Locations when it should be singular: Location - hope this helps.