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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Ultraware\Roles\Traits;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Database\Eloquent\Collection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Illuminate\Database\Eloquent\Relations\BelongsToMany;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Ultraware\Roles\Models\Permission;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                trait RoleHasRelations  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Role belongs to many permissions.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return BelongsToMany  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function permissions()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->belongsToMany(config('roles.models.permission'))->withTimestamps(); | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Role belongs to many users.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return BelongsToMany  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function users()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->belongsToMany(config('auth.providers.users.model'))->withTimestamps(); | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Role belongs to parent role.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function parent()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->belongsTo(config('roles.models.role'),'parent_id'); | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function ancestors()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $ancestors = $this->where('id', '=', $this->parent_id)->get(); | 
            
                            
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                        while ($ancestors->last() && $ancestors->last()->parent_id !== null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $parent = $this->where('id', '=', $ancestors->last()->parent_id)->get(); | 
            
                            
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                            $ancestors = $ancestors->merge($parent);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $ancestors;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Role has many children roles  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return \Illuminate\Database\Eloquent\Relations\HasMany  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function children()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->hasMany(config('roles.models.role'),'parent_id'); | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function descendants()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $descendants = $this->where('parent_id', '=', $this->id)->get(); | 
            
                            
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                        foreach($descendants as $descendant)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $descendants = $descendants->merge($descendant->descendants());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $descendants;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Attach permission to a role.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param int|Permission $permission  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return int|bool  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public function attachPermission($permission)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return (!$this->permissions()->get()->contains($permission)) ? $this->permissions()->attach($permission) : true;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Detach permission from a role.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param int|Permission $permission  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return int  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function detachPermission($permission)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->permissions()->detach($permission);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Detach all permissions.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return int  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function detachAllPermissions()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->permissions()->detach();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Sync permissions for a role.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array|Permission[]|Collection $permissions  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function syncPermissions($permissions)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->permissions()->sync($permissions);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.