I have main layout which contains a header, nav, footer and ofc many blade templates with
inherited from him. My problem: i have categories which i need to connect in my navbar, also in many children templates, maybe it can be done somehow globally without duplication code.
It's my 'HomeContoller' return index template, but if i return my categories with $categories my main layout can't see this variable
public function index()
{
$posts = Post::paginate(10);
$popularPosts = Post::orderByViews()->take(6)->get();
return view('front.index', ['posts' => $posts, 'popularPosts' => $popularPosts]);
}
Now i return to layout.blade my $categories by this method.
#php
$categories = App\Category::all();
#endphp
For this particular case I would suggest the View Composer - especially, if you scroll a bit down on that page you'll see Attaching A Composer To Multiple Views - you could use:
View::composer('*', function ($view) {
$view->with('categories', App\Category::all());
});
You can register it under any of the existing providers for instance AppServiceProvider under the boot method:
use Illuminate\Support\ServiceProvider;
class AppServiceProvider extends ServiceProvider
{
public function boot(): void
{
View::composer('*', function ($view) {
$view->with('categories', App\Category::all());
});
}
}
I want to pass a variable to multiple view bu when i use share method in View. Its says the share method isn't find on View.
How you say i use it and i try the composer either but no matter how i try it can't work could you give me simple example of this action
My controller categorycontroller.php
public function site(){
$data = array();
$data['subcategories'] = SubCategory::all();
$data['categories'] = Category::all();
return view('template.sitemap',compact("data"));
}
My route web.php
Route::get('/404.html', function () {
return view('template/404');
})->name('404.html');
Route::get('404.html','CategoryController#site')->name('404');
Route::get('/sitemap.html', function () {
return view('template/sitemap');
})->name('sitemap.html');
Route::get('sitemap.html','CategoryController#site')->name('sitemap');
what do you suggest?
You can make a variable accessible in multiple views using one of these methods for example:
AppServiceProvider ( reference: https://laravel.com/docs/5.6/providers ) with ViewComposer ( reference: https://laravel.com/docs/master/views#view-composers )
You'll need to add to your ServiceProvider boot() method something similar to this:
public function boot()
{
View::share('variable_name', 'some_value_here');
}
Or inside a controller:
public function __construct() {
$something = 'just a test';
View::share('something', $something);
}
I have to build an api.
It has one route. The client is sending a POST request with an XML.
Based on that xml, I have to decide witch controller#action to be called.
And I have a lot of controllers.
Unfortunately I can't modify the client side.
Do you have any suggestion how can i do that in a Laravel way?
For example
POST["body"] =
"...
<controller>content</controller>
<action>index</action>
..."
I want to call a ContentController::index()
Thx!
Thx for the reflection stuff. It is a big magic, worth the effort to look into it deeper.
I have no problem to parse the xml. So here is a simplier example
URL: /api/request/content/show
Routes.php
Route::get('api/request/{controller}/{action}', 'ApiController#request');
ApiController.php
class ApiController extends Controller
{
public function request($controller, $action)
{
//some error check
$controller = 'App\Http\Controllers\\' . ucfirst($controller) . 'Controller';
$params = "Put some params here";
$reflectionMethod = new \ReflectionMethod($controller, $action);
$reflectionMethod->invoke(new $controller, $params);
}
}
ContentController.php
class ContentController extends Controller
{
public function show($params)
{
dd($params);
}
}
And it is working!
Thx a lot!
A better option is to use App::call(); invoking controller with ReflectionMethod might not let you use response() inside your new forwarded controller and other laravel goodies.
Here is my try on this: /api/request/content/show
Routes web.php or api.php
use App\Http\Controllers\ApiController;
Route::get('api/request/{controller}/{action}', [ApiController::class, 'request']);
ApiController.php
class ApiController extends Controller
{
public function request($controller, $action)
{
//some error check
return App::call('App\Http\Controllers\\'.ucfirst($controller).'Controller#'.$action);
}
}
ContentController.php
use Illuminate\Http\Request;
class ContentController extends Controller
{
public function show(Request $request)
{
dd($request);
}
}
This will allow you more freedom.
In Laravel I have a table settings and i have fetched complete data from the table in the BaseController, as following
public function __construct()
{
// Fetch the Site Settings object
$site_settings = Setting::all();
View::share('site_settings', $site_settings);
}
Now i want to access $site_settings. in all other controllers and views so that i don't need to write the same code again and again, so anybody please tell me the solution or any other way so i can fetch the data from the table once and use it in all controllers and view.
Okay, I'm going to completely ignore the ridiculous amount of over engineering and assumptions that the other answers are rife with, and go with the simple option.
If you're okay for there to be a single database call during each request, then the method is simple, alarmingly so:
class BaseController extends \Controller
{
protected $site_settings;
public function __construct()
{
// Fetch the Site Settings object
$this->site_settings = Setting::all();
View::share('site_settings', $this->site_settings);
}
}
Now providing that all of your controllers extend this BaseController, they can just do $this->site_settings.
If you wish to limit the amount of queries across multiple requests, you could use a caching solution as previously provided, but based on your question, the simple answer is a class property.
At first, a config file is appropriate for this kind of things but you may also use another approach, which is as given below (Laravel - 4):
// You can keep this in your filters.php file
App::before(function($request) {
App::singleton('site_settings', function(){
return Setting::all();
});
// If you use this line of code then it'll be available in any view
// as $site_settings but you may also use app('site_settings') as well
View::share('site_settings', app('site_settings'));
});
To get the same data in any controller you may use:
$site_settings = app('site_settings');
There are many ways, just use one or another, which one you prefer but I'm using the Container.
Use the Config class:
Config::set('site_settings', $site_settings);
Config::get('site_settings');
http://laravel.com/docs/4.2/configuration
Configuration values that are set at run-time are only set for the current request, and will not be carried over to subsequent requests.
In Laravel, 5+ you can create a file in the config folder and create variables in that and use that across the app.
For instance, I want to store some information based on the site.
I create a file called site_vars.php,
which looks like this
<?php
return [
'supportEmail' => 'email#gmail.com',
'adminEmail' => 'admin#sitename.com'
];
Now in the routes, controller, views you can access it using
Config::get('site_vars.supportEmail')
In the views if I this
{{ Config::get('site_vars.supportEmail') }}
It will give email#gmail.com
Hope this helps.
EDiT-
You can also define vars in .env file and use them here.
That is the best way in my opinion as it gives you the flexibility to use values that you want on your local machine.
So, you can do something this in the array
'supportEmail' => env('SUPPORT_EMAIL', 'defaultmail#gmail.com')
Important - After you do this, don't forget to do this on production env
php artisan config:cache
In case, there's still some problem, then you can do this (usually it would never happen but still if it ever happens)
php artisan cache:clear
php artisan config:cache
In your local env, always do this after this adding it
php artisan config:clear
It's always a good practice not to cache config vars in local. in case, it was cached, this would remove the cache and would load the new changes.
I see, that this is still needed for 5.4+ and I just had the same problem, but none of the answers were clean enough, so I tried to accomplish the availability with ServiceProviders. Here is what i did:
Created the Provider SettingsServiceProvider
php artisan make:provider SettingsServiceProvider
Created the Model i needed (GlobalSettings)
php artisan make:model GlobalSettings
Edited the generated register method in \App\Providers\SettingsServiceProvider. As you can see, I retrieve my settings using the eloquent model for it with Setting::all().
public function register()
{
$this->app->singleton('App\GlobalSettings', function ($app) {
return new GlobalSettings(Setting::all());
});
}
Defined some useful parameters and methods (including the constructor with the needed Collection parameter) in GlobalSettings
class GlobalSettings extends Model
{
protected $settings;
protected $keyValuePair;
public function __construct(Collection $settings)
{
$this->settings = $settings;
foreach ($settings as $setting){
$this->keyValuePair[$setting->key] = $setting->value;
}
}
public function has(string $key){ /* check key exists */ }
public function contains(string $key){ /* check value exists */ }
public function get(string $key){ /* get by key */ }
}
At last I registered the provider in config/app.php
'providers' => [
// [...]
App\Providers\SettingsServiceProvider::class
]
After clearing the config cache with php artisan config:cache you can use your singleton as follows.
$foo = app(App\GlobalSettings::class);
echo $foo->has("company") ? $foo->get("company") : "Stack Exchange Inc.";
You can read more about service containers and service providers in Laravel Docs > Service Container and Laravel Docs > Service Providers.
This is my first answer and I had not much time to write it down, so the formatting ist a bit spacey, but I hope you get everything.
I forgot to include the boot method of SettingsServiceProvider, to make the settings variable global available in views, so here you go:
public function boot(GlobalSettings $settinsInstance)
{
View::share('globalsettings', $settinsInstance);
}
Before the boot methods are called all providers have been registered, so we can just use our GlobalSettings instance as parameter, so it can be injected by Laravel.
In blade template:
{{ $globalsettings->get("company") }}
View::share('site_settings', $site_settings);
Add to
app->Providers->AppServiceProvider file boot method
it's global variable.
Most popular answers here with BaseController didn't worked for me on Laravel 5.4, but they have worked on 5.3. No idea why.
I have found a way which works on Laravel 5.4 and gives variables even for views which are skipping controllers. And, of course, you can get variables from the database.
add in your app/Providers/AppServiceProvider.php
class AppServiceProvider extends ServiceProvider
{
public function boot()
{
// Using view composer to set following variables globally
view()->composer('*',function($view) {
$view->with('user', Auth::user());
$view->with('social', Social::all());
// if you need to access in controller and views:
Config::set('something', $something);
});
}
}
credit: http://laraveldaily.com/global-variables-in-base-controller/
In Laravel 5+, to set a variable just once and access it 'globally', I find it easiest to just add it as an attribute to the Request:
$request->attributes->add(['myVar' => $myVar]);
Then you can access it from any of your controllers using:
$myVar = $request->get('myVar');
and from any of your blades using:
{{ Request::get('myVar') }}
In Laravel 5.1 I needed a global variable populated with model data accessible in all views.
I followed a similar approach to ollieread's answer and was able to use my variable ($notifications) in any view.
My controller location: /app/Http/Controllers/Controller.php
<?php
namespace App\Http\Controllers;
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Routing\Controller as BaseController;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use App\Models\Main as MainModel;
use View;
abstract class Controller extends BaseController
{
use AuthorizesRequests, DispatchesJobs, ValidatesRequests;
public function __construct() {
$oMainM = new MainModel;
$notifications = $oMainM->get_notifications();
View::share('notifications', $notifications);
}
}
My model location: /app/Models/Main.php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
use DB;
class Main extends Model
{
public function get_notifications() {...
I have found a better way which works on Laravel 5.5 and makes variables accessible by views. And you can retrieve data from the database, do your logic by importing your Model just as you would in your controller.
The "*" means you are referencing all views, if you research more you can choose views to affect.
add in your app/Providers/AppServiceProvider.php
<?php
namespace App\Providers;
use Illuminate\Contracts\View\View;
use Illuminate\Support\ServiceProvider;
use App\Setting;
class AppServiceProvider extends ServiceProvider
{
/**
* Bootstrap any application services.
*
* #return void
*/
public function boot()
{
// Fetch the Site Settings object
view()->composer('*', function(View $view) {
$site_settings = Setting::all();
$view->with('site_settings', $site_settings);
});
}
/**
* Register any application services.
*
* #return void
*/
public function register()
{
}
}
If you are worried about repeated database access, make sure that you have some kind of caching built into your method so that database calls are only made once per page request.
Something like (simplified example):
class Settings {
static protected $all;
static public function cachedAll() {
if (empty(self::$all)) {
self::$all = self::all();
}
return self::$all;
}
}
Then you would access Settings::cachedAll() instead of all() and this would only make one database call per page request. Subsequent calls will use the already-retrieved contents cached in the class variable.
The above example is super simple, and uses an in-memory cache so it only lasts for the single request. If you wanted to, you could use Laravel's caching (using Redis or Memcached) to persist your settings across multiple requests. You can read more about the very simple caching options here:
http://laravel.com/docs/cache
For example you could add a method to your Settings model that looks like:
static public function getSettings() {
$settings = Cache::remember('settings', 60, function() {
return Settings::all();
});
return $settings;
}
This would only make a database call every 60 minutes otherwise it would return the cached value whenever you call Settings::getSettings().
You can also use Laravel helper which I'm using.
Just create Helpers folder under App folder
then add the following code:
namespace App\Helpers;
Use SettingModel;
class SiteHelper
{
public static function settings()
{
if(null !== session('settings')){
$settings = session('settings');
}else{
$settings = SettingModel::all();
session(['settings' => $settings]);
}
return $settings;
}
}
then add it on you config > app.php under alliases
'aliases' => [
....
'Site' => App\Helpers\SiteHelper::class,
]
1. To Use in Controller
use Site;
class SettingsController extends Controller
{
public function index()
{
$settings = Site::settings();
return $settings;
}
}
2. To Use in View:
Site::settings()
A global variable for using in controllers; you can set in AppServiceProvider like this :
public function boot()
{
$company=DB::table('company')->where('id',1)->first();
config(['yourconfig.company' => $company]);
}
usage
config('yourconfig.company');
using middlwares
1- create middlware with any name
<?php
namespace App\Http\Middleware;
use Closure;
use Illuminate\Support\Facades\View;
class GlobalData
{
public function handle($request, Closure $next)
{
// edit this section and share what do you want
$site_settings = Setting::all();
View::share('site_settings', $site_settings);
return $next($request);
}
}
2- register your middleware in Kernal.php
protected $routeMiddleware = [
.
...
'globaldata' => GlobalData::class,
]
3-now group your routes with globaldata middleware
Route::group(['middleware' => ['globaldata']], function () {
// add routes that need to site_settings
}
In file - \vendor\autoload.php, define your gobals variable as follows, should be in the topmost line.
$global_variable = "Some value";//the global variable
Access that global variable anywhere as :-
$GLOBALS['global_variable'];
Enjoy :)
I know I am super late to the party, but this was the easiest way I found.
In app/Providers/AppServiceProvider.php, add your variables in the boot method. Here I am retrieving all countries from the DB:
public function boot()
{
// Global variables
view()->composer('*',function($view) {
$view->with('countries', Country::all());
});
}
There are two options:
Create a php class file inside app/libraries/YourClassFile.php
a. Any function you create in it would be easily accessible in all the views and controllers.
b. If it is a static function you can easily access it by the class name.
c. Make sure you inclued "app/libraries" in autoload classmap in composer file.
In app/config/app.php create a variable and you can reference the same using
Config::get('variable_name');
Hope this helps.
Edit 1:
Example for my 1st point:
// app/libraries/DefaultFunctions.php
class DefaultFunctions{
public static function getSomeValue(){
// Fetch the Site Settings object
$site_settings = Setting::all();
return $site_settings;
}
}
//composer.json
"autoload": {
"classmap": [
..
..
..
"app/libraries" // add the libraries to access globaly.
]
}
//YourController.php
$default_functions = new DefaultFunctions();
$default_functions->getSomeValue();
I have a controller in Laravel 4, with a custom variable declared within it.
class SampleController extends BaseController{
public $customVariable;
}
Two questions: Is there any way I can call within a route filter:
The controller object where the filter is running at.
The custom variable from that specific controller ($customVariable).
Thanks in advance!
as per this post:
http://forums.laravel.io/viewtopic.php?pid=47380#p47380
You can only pass parameters to filters as strings.
//routes.php
Route::get('/', ['before' => 'auth.level:1', function()
{
return View::make('hello');
}]);
and
//filters.php
Route::filter('auth.level', function($level)
{
//$level is 1
});
In controllers, it would look more like this
public function __construct(){
$this->filter('before', 'someFilter:param1,param2');
}
EDIT:
Should this not suffice to your needs, you can allways define the filter inside the controller's constructor. If you need access to the current controller ($this) and it's custom fields and you have many different classes you want to have that in, you can put the filter in BaseController's constructor and extend it in all classes you need.
class SomeFancyController extends BaseController {
protected $customVariable
/**
* Instantiate a new SomeFancyController instance.
*/
public function __construct()
{
$ctrl = $this;
$this->beforeFilter(function() use ($ctrl)
{
//
// do something with $ctrl
// do something with $ctrl->customVariable;
});
}
}
EDIT 2 :
As per your new question I realised the above example had a small error - as I forgot the closure has local scope. So it's correct now I guess.
If you declare it as static in your controller, you can call it statically from outside the controller
Controller:
class SampleController extends BaseController
{
public static $customVariable = 'test';
}
Outside your controller
echo SampleController::$customVariable
use:
public function __construct()
{
$this->beforeFilter('auth', ['controller' => $this]);
}