Global variable in laravel controller

Question

I want the $year variable to be available in all functions of my PagesController. I tried this code but I didn't succeed.

class PagesController extends Controller
{
    public function __construct()
    {
        $dt = Carbon::parse();
        $year = $dt->year;
    }

    public function index()
    {
        return view('pages.index');
    }

    public function about()
    {
        return view('pages.about', compact('year'));
    }

    public function create()
    {
        return view('pages.create', compact('year'));
    }
}

Tim · Accepted Answer · 2015-10-05 07:03:51Z

24

1. Option: Use the AppServiceProvider

In this case $year is available to ALL views!

<?php

namespace App\Providers;

use Carbon;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        view()->share('year', Carbon::parse()->year);
    }

    /**
     * Register the service provider.
     *
     * @return void
     */
    public function register()
    {
        //
    }
}

2. Option: Use a View Composer

In this case, the variable is only available to the views where you need it.

Don't forget to add the newly created provider to config/app.php!

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Carbon;

class ComposerServiceProvider extends ServiceProvider
{
    /**
     * Register bindings in the container.
     *
     * @return void
     */
    public function boot()
    {
        // Using Closure based composers...
        view()->composer('pages.*', function ($view) {
            $view->with('year', Carbon::parse()->year);
        });
    }

    /**
     * Register the service provider.
     *
     * @return void
     */
    public function register()
    {
        //
    }
}

3. Use Blades @inject-method

Within the views that need the year you could inject a Carbon instance like this:

@inject('carbon', 'Carbon\Carbon')

{{ $carbon->parse()->year }}

answered Oct 5, 2015 at 7:03

Tim

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8 Comments

Nixxx27 Over a year ago

hello im new to laravel. how can i use the first option. do i need to declare something in pagesController.php cause i got an error of "Undefined variable: year". P.S im using laravel 5

Tim Over a year ago

If you've added the code to your AppServiceProvider like described, there's nothing else you need to do. What is throwing this error?

Nixxx27 Over a year ago

i use this.. public function about() { return $year ; } and the error is Undefined variable: year. i copied and paste your code.

Tim Over a year ago

For this to work you can't just return the variable $year because it gets shared with a view. You need to return a view from your function: return view('pages.about') and then you can access $year from your blade template like this: {{ $year }}

Nixxx27 Over a year ago

yap thats correct i need the year to be pass on all views. thanks for the help

|

Komal12 · Accepted Answer · 2017-09-18 05:20:17Z

14

Try this:

//give private declaration
private $year;
public function __construct()
{
    $dt = Carbon::parse();
    $this->year = $dt->year;
}

public function index()
{
    return view('pages.index');
}

public function about()
{
    $year = $this->year;
    return view('pages.about',compact('year') );
}

public function create()
{
     $year = $this->year;
    return view('pages.create',compact('year') );
}

edited Sep 18, 2017 at 5:20

Komal12

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answered Oct 5, 2015 at 6:44

aldrin27

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2 Comments

Yousef Altaf Over a year ago

I try this private $year; and in function $year = $this->year; return view('pages.about',compact('year') ); but in view it returns null?

Yousef Altaf Over a year ago

here is what I done private $superSupplier; and

public function __construct() {pointedSupplier = Supplier::where( 'id', Auth::guard( 'supplier' )->id() )->with( 'supplier_role' )->first();} $this->superSupplier   = $pointedSupplier->supplier_role->supper_supplier;

this returns null

Viktor · Accepted Answer · 2015-10-05 06:53:31Z

5

You can create a global singleton within App::before event

App::before(function($request) {
    App::singleton('customYear', function(){
        $dt = Carbon::parse();
        $customYear = $dt->year;
        return $customYear;
    });

    // If you use this line of code then it'll be available in any view
    View::share('customYear', app('customYear'));

    //To get the same data in any controller you may use:
    $customYear = app('customYear');
});

answered Oct 5, 2015 at 6:53

Viktor

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