Laravel sharing data with all views - laravel

I'm trying to run a user-related query to fetch data to appear in the top bar of my site on every view.
I've created a new BaseController according to the first answer here:
How to pass data to all views in Laravel 5?
and that's working for a simple test (just sharing a typed-out variable), but when I try and use Auth::user()->id in the __construct method of BaseController (which in my other controllers always returns the ID of the currently logged in user), I get Trying to get property 'id' of non-object.
I've tried adding use App\User at the top of BaseController (even though it isn't usually needed) and also tried adding in the bits for Spatie laravel-permission plugin, but neither has any effect.
I tried dd on Auth::user() and just get 'null'. My feeling is that the user details maybe haven't been loaded at this stage, but BaseController extends Controller same as MyWorkingController extends Controller so I'm not sure why Auth::user()->id doesn't work here when it does normally?

Create a Base Controller which has all the information that you want to share too all controllers/pages/views and let your others controllers extend it.

open file AppServiceProvider.php from folder Providers and write below code in boot function
view()->composer('*', function ($view)
{
$view->with('cartItem', $cart );
});
And now go to your view page and write :
{{ $cartItem }}

You cannot access Auth in constructors because middleware has not been run yet. You can use either View composer or give try this way though i haven't tested.
class BaseController extends Controller {
protected $userId;
public function __construct() {
$this->middleware(function ($request, $next) {
$this->userId= Auth::user()->id;
return $next($request);
});
}
}

Write this in AppServiceProvider.php
namespace App\Providers;
use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Schema;
use DB;
use Auth;
use App\Cart;
class AppServiceProvider extends ServiceProvider
{
public function boot()
{
Schema::defaultStringLength(191);
view()->composer('*', function ($view)
{
view()->composer('*', function($view)
{
if (Auth::check()) {
$cart = Cart::where('user_id', Auth::user()->user_id)->count();
$view->with('cartItem', $cart );
}else {
$view->with('cartItem', 0);
}
});
});
}
}
In you view simply write
{{ $cartItem }}

For anyone interested, I just encountered the same problem and I've solved it with ServiceProvider:
Define your custom ServiceProvider with the command
php artisan make:provider CustomServiceProvider
Add a reference to your service provider in the config\app.php file, specifically in the providers array, adding this item to it:
\App\Providers\CustomServiceProvider::class,
Declare the variables you want to share in your provider's boot() method and share them by using the view()->share method:
public function boot()
{
$shared_variable = "Hello";
view()->share('shared_variable', $shared_variable);
}
You can now reference your variable in your blade files with the standard notation:
{{ $shared_variable }}

Related

Change InertiaJS-Laravel default RootView

I am using Laravel 8 and I have installed InertiaJS, but in my directory resources/views/ I have a single file called index.blade.php which I plan to use with InertiaJS.
By default, InertiaJS looks for a file inside that directory called app.blade.php. I know writing the following statement:
\Inertia\Inertia::setRootView('index');
Change the rootView and allow me to use the file I have created. It may seem like a stupid question, but as far as I see it, I can do 2 things ..
Rename file index.blade.php to app.blade.php
Write the previous sentence .. in one of the ServiceProviders that I have
I wonder the following:
InertiaJS-Laravel does not allow publishing a ServiceProvider with the command php artisan vendor:publish? (the output of this command does not show me anything to publish regarding this package)
To solve my problem I should create a ServiceProvider like: php artisan make:provider InertiaServiceProvider and then register it?
Or just add the previous statement to one of the ServiceProvider that already exist? Like in app/Http/Providers/RouteServiceProvider.php
What do you recommend that would be better?
I want to seek the largest possible organization in my project. Thank you very much in advance...
Update; after my initial answer (on 20-09-2020), Inertia introduced middleware to handle your Inertia requests.
As described in the answers below, you can use the command php artisan inertia:middleware to generate this middleware. You can set the root index with:
// Set root template via property
protected $rootView = 'app';
// OR
// Set root template via method
public function rootView(Request $request)
{
return 'app';
}
You can find more info in the docs.
Even tighter, just override the rootView method in App\Http\Middleware\HandleInertiaRequests like this...
public function rootView(Request $request)
{
if ($request->route()->getPrefix() == 'admin') {
return 'layout.admin';
}
return parent::rootView($request);
}
You can do this inside your controller on the fly.
<?php
namespace App\Http\Controllers;
use App\Models\User;
use Illuminate\Http\Request;
use Inertia\Inertia;
class NewsController extends Controller
{
public function index()
{
Inertia::setRootView('layouts.news');
$users = User::all();
return Inertia::render('News/Index', compact('users'));
}
}
Replace in the App\Http\Middleware\HandleInertiaRequests
protected $rootView = 'app';
with:
public function rootView(Request $request): string
{
if ($request->route()->getPrefix() === '/admin') {
return 'admin.app';
}
return 'app';
}
I think it would be easier to change it in App\Http\Middleware\HandleInertiaRequests.
Be sure to run php artisan inertia:middleware during inertia server-side installation.
Also include it in your web middleware group.
Then go to App\Http\Middleware\HandleInertiaRequests and change the $rootView property to the name of the blade file you want to use. Example:
protected $rootView = 'index';
Extended #Olu Udeh answer
overwrite handle method of App\Http\Middleware\HandleInertiaRequests middleware
public function handle(Request $request, Closure $next)
{
if($request->route()->getPrefix() == 'admin'){
$this->rootView = 'layouts.admin';
}
return parent::handle($request, $next);
}
In laravel 8 this work for me
App\Http\Middleware\HandleInertiaRequests
Code
public function rootView(Request $request)
{
if(request()->is('admin/*') or request()->is('admin'))
{
return 'admin';
}
return parent::rootView($request);
}

access auth for boot method to use variable in master blade

When I am trying to access Auth::user()->id;. its give me
Trying to get property 'id' of non-object
i am trying to access it in boot method for App\Providers
namespace App\Providers;
class AppServiceProvider extends ServiceProvider {
public function boot()
{
Schema::defaultStringLength(191);
$value = Auth::user()->id;
view()->composer('layouts.member', function ($view) use ($value) {
$view->with('value', $value);
});
}
}
I am going to make builder-bulder for query to use variable into master layouts blade.
You can't use Auth facade in the AppServiceProvider as the application is not fully booted yet.
Also, you will get the same error if there is no authenticated user. So it's better to wrap it in an optional method to avoid this error. In this case the value will be null.
However, you can use it inside the closure if you want that's what you want.
public function boot()
{
Schema::defaultStringLength(191);
view()->composer('layouts.member', function ($view) {
$value = optional(Auth::user())->id;
$view->with('value', $value);
});
}

How to pass data to all views in Laravel 5.6?

I have two controllers. StudentController and TeacherController. I have a variable $chat which I want to pass in all the views of StudentController and TeacherController. The $chat will contain different data for both these controllers.
I searched and found ways, but I am getting empty data. I am doing it like this.
<?php
namespace App\Http\Controllers;
use View;
class StudentController extends Controller {
public function __construct()
{
$this->middleware('auth')->except(['home']);
$this->middleware('access')->except(['home']);
$chats = studentChat();
View::share('chats', $chats);
}
So, here I am printing and it is returning an empty array, but when I use the same in a function the array contains data. What is wrong here? Can anyone please help?
What I tried:
public function boot()
{
View::composer('*', function ($view) {
$chats = Cache::remember('chats', 60, function () {
if(Auth::user()->user_type() == config('constant.student'))
{
return studentChat();
}
else
{
return teacherChat();
}
});
$view->with('chats', $chats);
});
}
If you use View::share your share data to ALL your view, if you need to add data to few different views you may do this:
Create blade file(chat.blade.php for your case), and put your variables:
<? $chats = studentChat(); ?>
Include this file to the begining of your views where your need this 'global' varables:
//begin of your blade file
#include('chat')
//some code
{{ $chat->channel }}
Sharing Data With All Views
Occasionally, you may need to share a piece of data with all views that are rendered by your application. You may do so using the view facade's share method. Typically, you should place calls to share within a service provider's boot method. You are free to add them to the AppServiceProvider or generate a separate service provider to house them:
<?php
namespace App\Providers;
use Illuminate\Support\Facades\View;
class AppServiceProvider extends ServiceProvider
{
public function boot()
{
$chats = studentChat();
View::share('chats', $chats);
}
public function register()
{
//
}
}
So, what I did was in the AppServiceProvider class, in the boot function I added this.
View::composer('*', function ($view) {
if(!\Auth::check())
{
return;
}
$userType = \Auth::user()->user_type ;
if($userType == config('constant.student'))
{
$chats = studentChat();
}
else if($userType == config('constant.teacher'))
{
$chats = teacherChat();
}
$view->with('chats', $chats);
});
You can pass data to the view Like.
return View::make('demo')->with('posts', $posts);
For more details visit article : Introduction to Routing in Laravel
write your query in boot method in appServiceProvider like,
View::composer('*', function ($view) {
$share_query = Cache::remember('share_query', 60,function () {
return App\User::all();
});
$view->with('share_query', $share_query);
});
Your final solution is ok, but not the cleanest possible.
Here is what i would do.
Define a class with a single function that contains your logic and return $chats, that way you will encapsulate your logic properly and keep your service provider boot method clean.
Then you have 2 options:
Inject your class in the boot() method of the service provider you use, then call its function and uses View::share. Should looks like :
public function boot(ChatResolver $chatResolver)
{
$chats = $chatResolver->getChats();
View::share(compact('chats));
}
If you only use $chats variable in a signe view or partial (like a part of layout), you can also inject the class you defined directly in the view.
Here is a link to Laravel doc regarding that.
In some cases it might be the easiest solution.

Best way to define global variables from database in laravel

I want to define some variables from database to take them in any place of the app (controllers and views at least).
I found a way to do this in Http/Controllers/Controller.php:
namespace App\Http\Controllers;
use Session;
use Request;
use View;
use App\Http\Requests;
use Log;
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Routing\Controller as BaseController;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
class Controller extends BaseController
{
use AuthorizesRequests, DispatchesJobs, ValidatesRequests;
public function __construct()
{
$this->middleware(function ($request, $next) {
$t = array();
$translations = \App\Translation::all();
foreach ($translations as $translation) {
$t[$translation->code] = $translation->text;
}
View::share('t', $t);
});
}
}
It works fine - I can access {{$t['something'}} in my app, but there is a problem with Auth route /register or /login, in these pages $t variable is not defined.
I think because Auth performs some actions before this my __construct, how to fix it?
Or maybe there is a better way to set dynamic variables from database reachable in all app views and controllers?
(laravel 5.3) I'm new to laravel, so can't feel the architecture yet.
I would go with setting a custom Config like this:
Config::set('translations', your_array_from_database);
You can even define your own helper function for fast retrieving, ie.
function t($name)
{
return Config::get('translations.'.$name);
You can set your own translations Config in a middleware, so you can decide the exact order in the request-response cycle you want to load it from database.
I haven't used Laravel for some time but my guess is, based on the 5.3 docs, is you can just call your middleware from those Auth controllers that are missing it. In the Auth Register controller you can add middleware, for example:
app/Http/Controllers/Auth/RegisterController.php
public function __construct()
{
$this->middleware('guest');
$this->middleware(function ($request, $next) {
// Add your middleware logic here
// or put it in it's own file and reference like 'guest' above.
return $next($request);
});
}
Try your logic directly in the closure above first. Then shift to its own class file and add it to the routeMiddleware array in the kernel.
Alternatively, you could include the middleware in your base controller you extend from: https://github.com/laravel/laravel/blob/5.3/app/Http/Controllers/Controller.php
Try using compact function in Laravel. Something like this:
//function to fetch data
//$t = \App\Translation::all();
return View::make('gameworlds.mygame', compact(['t']));
Then on the view you can access it like:
{{$t}}

global variable for all controller and views

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();

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