laravel - Change roles permission -

i'm trying make admin can decide role can what, frontend easily, i'm bit stuck. i've tried couple of different things, none of them worked far.

i've tried far:

@foreach($role $role)      {!! form::model($permission, [         'method' => 'patch',         'url'    => 'settings/permissionsupdate',     ]) !!}      <br />     {{$role->name}}     <br />      <input type="hidden" name="role_id" value="{{ $role->id }}" />      @foreach($permission $perm)         <select name="permissions[ {{ $perm->id }} ]">             <option value="1">allowed</option>             <option value="0">not allowed</option>         </select>         <br />         {{$perm->name}}         <br />     @endforeach      {!! form::submit('save settings', ['class' => 'btn btn-primary']) !!}     {!! form::close() !!}  @endforeach 

ths database

permission_role     * id     * role_id     * permmission_id  permission     * id     * name     * slug     * description  roles     * id     * name     * slug     * description  role_user     * id     * role_id     * user_id 

and controller

public function permissionsupdate(request $request) {     $allowed_permissions = [];      foreach($request->input('permissions') $permission) {         if ($permission == 1) {             $allowed_permissions[] = $permission;         }          $role = role::find($request->input('role_id'));         $role->permissions()->sync($allowed_permissions); //currently gives error         $role->save();     } } 

im getting error call undefined method illuminate\database\query\builder::syncpermission().

models role:

public function permissions() {     return $this->hasmany('permissions'); } 

permission

public function permissionsrole() {     return $this->hasmany('app\permissionrole', 'role_id', 'id'); } 

but have admit i'm abit on lost ground. need attach , deatach permissions roles, , can't reallt figure out how this

i still can't seem figure out, tried not sure how i'm gonna attach or deattach permissons users.

update:

i've tried far, , im getting close still few problems.

i had problem of model being wrong, tried finde table role_role changed to

public function permissions() {      return $this->belongstomany('app\permission'); (had make new model called permisson, because when used permissions looked role_permissions , called role_permission, table alone called permissions, bit confsuing there) } 

and made work, changes first value(1) if on allowed attaches permissons_id equal 1 , role id equal correct role_id, if dd request seems correct data permission_id = 1, 2 ,3 ,4 etc, goes wrong somewhere after that. view still dosen't show allowed or not start. coulndt work, tried like:

<option value="1" {{ @ifusercan($perm->slug)  ? 'selected="selected"' : null }} >allowed</option> <option value="0" {{ @ifusercan($perm->slug) ? null : 'selected="selected"' @endif }}>not allowed</option> 

but yeah can't that.