PHP code example of backpack / permissionmanager

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

backpack / permissionmanager example snippets

 namespace App\Models;

use Backpack\CRUD\app\Models\Traits\CrudTrait; // <------------------------------- this one
use Spatie\Permission\Traits\HasRoles;// <---------------------- and this one
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    use CrudTrait; // <----- this
    use HasRoles; // <------ and this

    /**
     * Your User Model content
     */

// in some ServiceProvider, AppServiceProvider for example

$this->app->bind(
    \Backpack\PermissionManager\app\Http\Controllers\UserCrudController::class, //this is package controller
    \App\Http\Controllers\Admin\UserCrudController::class //this should be your own controller
);

// this tells Laravel that when UserCrudController is requested, your own UserCrudController should be served.

namespace App\Http\Controllers\Admin;

use Backpack\PermissionManager\app\Http\Controllers\UserCrudController as BackpackUserCrudController;

class UserCrudController extends BackpackUserCrudController
{
    use \App\Traits\CrudPermissionTrait;

    public function setup()
    {
        parent::setup();
        $this->setAccessUsingPermissions();
    }
}

$this->app->bind(
    \Backpack\PermissionManager\app\Http\Controllers\UserCrudController::class, // package controller
    \App\Http\Controllers\Admin\UserCrudController::class // the controller using CrudPermissionTrait
);

Route::group([
    'namespace'  => 'App\Http\Controllers\Admin', // the new namespace
    'prefix'     => config('backpack.base.route_prefix', 'admin'),
    'middleware' => ['web', backpack_middleware()],
], function () {
    // the adapted controllers
    Route::crud('user', 'UserCrudController');
    // Route::crud('role', 'RoleCrudController');
});
Route::group([
    'namespace'  => '\Backpack\PermissionManager\app\Http\Controllers', // the original namespace
    'prefix'     => config('backpack.base.route_prefix', 'admin'),
    'middleware' => ['web', backpack_middleware()],
], function () {
    // to original controllers
    // not modified yet in this example
    Route::crud('permission', 'PermissionCrudController');
    Route::crud('role', 'RoleCrudController');
});

namespace Database\Seeders;

use App\Models\User;
use Illuminate\Database\Seeder;
use Backpack\PermissionManager\app\Models\Permission;
use Backpack\PermissionManager\app\Models\Role;

class PermissionSeeder extends Seeder
{
    /**
     * Run the database Permission seed.

     * Permissions are fixed in code and are seeded here.
     * use 'php artisan db:seed --class=PermissionSeeder --force' in production
     *
     * @return void
     */
    public function run()
    {
        // create permission for each combination of table.level
        collect([ // tables
            'users',
            'roles',
        ])
            ->crossJoin([ // levels
                'see',
                'edit',
            ])
            ->each(
                fn (array $item) => Permission::firstOrCreate([
                    'name' => implode('.', $item),
                ])
                    ->save()
            )
            //
        ;
        User::first()
            ->givePermissionTo(['users.edit']);
    }
}

 artisan db:seed --class=PermissionSeeder --force

shell
php artisan vendor:publish --provider="Spatie\Permission\PermissionServiceProvider" --tag="permission-migrations"
php artisan migrate
php artisan vendor:publish --provider="Spatie\Permission\PermissionServiceProvider" --tag="permission-config"
// then, add the Spatie\Permission\Traits\HasRoles trait to your User model(s)

bash
php artisan vendor:publish --provider="Backpack\PermissionManager\PermissionManagerServiceProvider" --tag="config" --tag="migrations"

bash
php artisan migrate

config/backpack/permissionmanager.php

resources/views/vendor/backpack/ui/inc/menu_items.blade.php

config/backpack/base.php

config/backpack/base.php

config/auth.php

 bash
backpack_user()->givePermissionTo('edit articles');

 bash
backpack_user()->revokePermissionTo('edit articles');

 bash
backpack_user()->hasPermissionTo('edit articles');

 bash
backpack_user()->can('edit articles');

 bash
backpack_user()->can('edit articles');

$this->crud->allowAccess()

$this->crud->denyAccess()

 php
namespace App\Traits;

use Backpack\CRUD\app\Library\CrudPanel\CrudPanelFacade as CRUD;

/**
 * CrudPermissionTrait: use Permissions to configure Backpack
 */
trait CrudPermissionTrait
{
    // the operations defined for CRUD controller
    public array $operations = ['list', 'show', 'create', 'update', 'delete'];


    /**
     * set CRUD access using spatie Permissions defined for logged in user
     *
     * @return void
     */
    public function setAccessUsingPermissions()
    {
        // default
        $this->crud->denyAccess($this->operations);

        // get context
        $table = CRUD::getModel()->getTable();
        $user = request()->user();

        // double check if no authenticated user
        if (!$user) {
            return; // allow nothing
        }

        // enable operations depending on permission
        foreach ([
            // permission level => [crud operations]
            'see' => ['list', 'show'], // e.g. permission 'users.see' allows to display users
            'edit' => ['list', 'show', 'create', 'update', 'delete'], // e.g. 'users.edit' permission allows all operations
        ] as $level => $operations) {
            if ($user->can("$table.$level")) {
                $this->crud->allowAccess($operations);
            }
        }
    }
}

routes/backpack/permissionmanager.php

config/backpack/permissionmanager.php

config/backpack/permissionmanager.php

routes/backpack/permissionmanager.php

config/backpack/base.php