my changes

app/Role.php

@@ -1,14 +1,122 @@
-<?php namespace App;
+<?php
+
+namespace App;
 
 use Illuminate\Database\Eloquent\Model;
+use Spatie\Permission\Contracts\Role as RoleContract;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Spatie\Permission\Exceptions\RoleDoesNotExist;
+use Spatie\Permission\Exceptions\GuardDoesNotMatch;
+use Spatie\Permission\Exceptions\RoleAlreadyExists;
+use Spatie\Permission\Guard;
 
-class Role extends Model {
+use Spatie\Permission\Traits\HasPermissions;
+use Spatie\Permission\Traits\RefreshesPermissionCache;
 
-	public function users()
-	{
-		
-		return $this->belongsToMany('App\User');
+class Role extends Model implements RoleContract
+{
+    use HasPermissions;
+    use RefreshesPermissionCache;
 
-	}
+    //protected $table = 'user_roles';
+    public $timestamps  = false;
 
+    public $guarded = ['id'];
+
+    public function __construct(array $attributes = [])
+    {
+        $attributes['guard_name'] = $attributes['guard_name'] ?? config('auth.defaults.guard');
+        parent::__construct($attributes);
+        $this->setTable(config('permission.table_names.roles'));
+    }
+
+    public static function create(array $attributes = [])
+    {
+        $attributes['guard_name'] = $attributes['guard_name'] ?? Guard::getDefaultName(static::class);
+
+        if (static::where('name', $attributes['name'])
+        ->where('guard_name', $attributes['guard_name'])->first()) {
+            throw RoleAlreadyExists::create($attributes['name'], $attributes['guard_name']);
+        }
+
+        if (isNotLumen() && app()::VERSION < '5.4') {
+            return parent::create($attributes);
+        }
+
+        return static::query()->create($attributes);
+    }
+
+    /**
+     * A role may be given various permissions.
+     */
+    public function permissions() : BelongsToMany
+    {
+        return $this->belongsToMany(
+            \App\Permission::class,
+            config('permission.table_names.role_has_permissions'),
+            'role_id',
+            'permission_id'
+        );
+    }
+
+    /**
+     * A role belongs to some users of the model associated with its guard.
+     */
+    public function users() : BelongsToMany
+    {
+        return $this->belongsToMany(
+            \App\User::class,
+            config('permission.table_names.model_has_roles'),
+            'role_id',
+            'account_id'
+        );
+    }
+        
+    public static function findByName(string $name, $guardName = null): RoleContract
+    {
+        $guardName = $guardName ?? Guard::getDefaultName(static::class);
+
+        $role = static::where('name', $name)->where('guard_name', $guardName)->first();
+        if (! $role) {
+            throw RoleDoesNotExist::named($name);
+        }
+        return $role;
+    }
+
+    public static function findById(int $id, $guardName = null): RoleContract
+    {
+        $guardName = $guardName ?? Guard::getDefaultName(static::class);
+        $role = static::where('id', $id)->where('guard_name', $guardName)->first();
+        if (! $role) {
+            throw RoleDoesNotExist::withId($id);
+        }
+        return $role;
+    }
+       
+    public static function findOrCreate(string $name, $guardName = null): RoleContract
+    {
+        $guardName = $guardName ?? Guard::getDefaultName(static::class);
+        $role = static::where('name', $name)->where('guard_name', $guardName)->first();
+        if (! $role) {
+            return static::create(['name' => $name, 'guard_name' => $guardName]);
+        }
+        return $role;
+    }
+        
+    public function hasPermissionTo($permission): bool
+    {
+        if (is_string($permission)) {
+            $permission = app(Permission::class)->findByName($permission, $this->getDefaultGuardName());
+        }
+
+        if (is_int($permission)) {
+            $permission = app(Permission::class)->findById($permission, $this->getDefaultGuardName());
+        }
+
+        if (! $this->getGuardNames()->contains($permission->guard_name)) {
+            throw GuardDoesNotMatch::create($permission->guard_name, $this->getGuardNames());
+        }
+
+        return $this->permissions->contains('id', $permission->id);
+    }
 }