render a blank view in cakephp - cakephp

i need to prevent a view to be rendered in a specified case but i can't understand how to prevent it to render.
I tried
$this->autoRender=false
but nothing happened, probably because i'm using an API engine that manage rendering differently from regular controllers. Anyone know any trick to do this?

Using $this->layout = 'ajax' does not seem to be enough.
But using these both lines works:
$this->layout = 'ajax';
$this->render(false);

While searching for a solution, I found this answer. Now when using CakePHP 2.4.x, you could use the following code in your controller:
$this->layout = false;
This will lead to just the view being rendered, without a layout.

It's an old question. The current cake-version is 3.x and there is a easy way to use a blank layout.
Only add the in the controller:
$this->viewBuilder()->autoLayout(false);

Try to use ajax layout $this->layout = 'ajax' this is the default empty layout, which is used for ajax methods.

public function function_without_layout(){
$this->viewBuilder()->autoLayout(false);
echo "hello Brij";
exit;
}
$this->layout = false; is deprecated in CakePHP version 3.
Use $this->viewBuilder()->autoLayout(false); for CakePHP version 3.

Add this in your controller:
$this->autoRender = false;
This works in my project.

The CakePHP 3 autoLayout(false) method from the other answer will still have the system try to locate a corresponding view/template file for the action you're calling. Since I needed no output at all, this didn't work for me, so I needed to also render an empty template.
Creating a blank .ctp file for every empty action you might need isn't an option really, because you'd normally want to have one and reuse it. CakePHP 2 had a $this->viewPath property which would let you configure the controller to look into the app/View folder, but it's CakePHP 3 alternative still looks into the corresponding controller and prefix folders. There is a not-so-obvious way to force CakePHP3 to look for a template in a root view path.
Create src/Template/my_blank_view.ctp
Add the following to your controller action:
$this->viewBuilder()->layout(false);
$this->viewBuilder()->templatePath('.'); // this
$this->viewBuilder()->template('my_blank_view');
Also, I'm using $this->viewBuilder()->layout(false) instead of autoLayout(false) because the latter kind of implies that there might be another layout set later, where the layout(false) just explicitly sets that there's no layout needed.

without knowing anything about API engine you're using, maybe try to make empty layout with empty content and call it in controller as $this->layout = 'empty_layout'

Related

Why ajax calls doesn't load the layout in CakePHP 2.3

I am wondering why if i use jquery $.load function or some pluging such as fancybox to load content dynamically on the site, the layoug is not loaded but only the view as if it were an element.
My $.load() calls a controller action as if it was a normal link, like:
$('#demo').load("http://"+ document.domain +"/tables/users/edit/", {input : data}, function(dat){
//whatever
});
This is not something I personally dislike, like this I avoid creating elements and calling them using $this->render('/Elements/xxxx', false); from my controllers.
I want to know if this is the proper way to work with or if it is some kind of cheat or bug of cakephp.
How should we treat this type of content which is not a proper "view" (as won't have a layout, headers...etc), but an "element" loaded dynamically? As a view? As an element?
Thanks.
Check /Layouts/ajax.ctp this is the layout that is rendered for ajax calls. Usually you don't want to have all the header and footer around the element you request when doing an ajax call.
Burzum is on the right track.
Your controller will load the default layout unless you tell it to use /Layouts/ajax.ctp. So in your edit function you'd want to switch layouts depending on how the function is being called. For example:
if($this->request->is('ajax')){
$this->layout = 'ajax';
}// else use controller default...or specify another layout to use here.

Setting permissions in cakephp Pages controller

I followed Andrew Perkins excellent tutorial on setting up permissions in CakePHP 2.0.
My question, however, relates to how to use the allow and deny method in the Pages controller. Currently I have $this->Auth->allow('display') which allows all methods in the Pages controller to be view.
What if I only want the home page allowed but the rest denied? How do I code that?
Thanks in advance.
Make sure you have copied the PageController.php to your app/Controller folder. Then, add a beforeFilter callback method and set access based on the passed page parameter:
public function beforeFilter() {
// Use $this->request->pass to get the requested page name/id
// Decide on access with $this->Auth->allow()
}
This should solve your problem.
You can find more information on request's lifecycle in CakePHP manual. That's pretty useful stuff.
Have you tried this code?
You can out it into your PageController or into your Controller directly
$views = array ('index'); //array of view that you want allow
$this->Auth->allow($views);

cakephp v2 layout not loading

Hi I want to add a new layout to my cakephp, but somehow the system keeps looking in the view folder from the controller instead of the /app/View/Layouts folder.
Error: The view for TestsController::desktop() was not found.
Error: Confirm you have created the file: /app/View/Tests/desktop.ctp
the desktop.ctp file is in /app/View/Layouts. The same place as the default.ctp
The code in the controller is:
public function desktop() {
$this->layout = 'desktop';
}
What is wrong here? I don't understand why cakephp keeps looking in the view/controller-name folder... I need this fixed because I want to use this layout for other controllers. Thanks.
If you read the message carefully, you'll see cake is telling you it cannot find your view, not your layout.
So, create an empty /app/View/Tests/desktop.ctp and see what happens. I'm hoping magic.. :)

CakePHP - Render a view that is actually plugin's view from Component

Morning guys,
So this is my first time developing a plugin for CakePHP. Here's what I am doing in startUp of the component.
//component
function startUp(&$controller){
//....
if($render){
$controller->render("return", "ajax");
}
}
By default render will look at app/views/<controllers>/return.ctp and app/views/layouts/ajax for this render call.
Is there anyway that I can give a directive to render from app/my_plugin/views/awesome_stuffs/return.ctp and app/my_plugin/views/layout/ajax.ctp instead?
I believe the third param of Controller::render($file, $layout, $file) could do the job, but is there any better Cake way of doing things?
Plus, is that considered a good practice to take over controller's rendering function like that?
One way is to call the PLUGIN controller/action URL in your AJAX call, instead of the main app controller/action URL.
ex:
instead of:
http://domain.com/controller/action
you call:
http://domain.com/my_plugin/controller/action
When you do it this way, the plugin views & layouts are called automagically. See:
http://book.cakephp.org/view/1118/Plugin-Tips
http://book.cakephp.org/view/1115/Plugin-Views
Otherwise, the only way I know of is manually setting paths as you mentioned or controller-wide via:
var $viewPath = 'path/to/plugin/views/';
var $layoutPath = 'path/to/plugin/layouts/';
You might want to try setting $this->view to the plugin dotted view file you want to render.
add to your source
$controller->plugin = "pluginname";

How to load custom plugins in CakePHP?

I'm writing a poll plugin for a website based on CakePHP. The plugin works good if I access it from its own URL (eg. myapp.com/plugin/controller) but I need to call it from different pages. I would like to include it as a widget in every page.
I'm looking for a method like $myplugin->renderPoll($pollId); but I really didn't find any information about how to instantiate the Polls class. I tried with App::import and ClassRegistry::init with no luck.
Any suggestion ?
Thank you
Looks like you are trying to create some sort of Helper to create poll cross views? I would suggest creating a Helper for that particular class. Simply create a helper in plugins/plugin_name/views/helpers/foo.php, and in each controller (or in app_controller.php) that you need it, include the helpers as $helpers = array("PluginName.Foo"); and inside your view, you should be able to use the methods defined in foo.php by calling $foo->renderPoll($pollId).
//app/plugins/plugin_name/views/helpers/foo.php
class FooHelper extends AppHelper {
var $name = "Foo";
function renderPoll($id=0) {
//...
}
}
Use Elements! They're small blocks of presentation code that need to be repeated from page to page, sometimes in different places in the layout.
Check this link out: http://book.cakephp.org/view/1081/Elements
I guess this link explains everything you need.

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