将变量传递给函数

Question

I want to pass a variable from a function passes to function message. I create $groupname in the else sector and try to use it in the message function query. What is in my case the best way to do this?

class ExistingGroupMembers implements Rule
{

    public function __construct()
    {
        //
    }

    public function passes($attribute, $value)
    {
        $existingMembers = Member::where([['idgroup', $value],['member', '<>', Auth::id()]])->select('id')->first('id');
        if(!empty($existingMembers)){
            return true;
        }else{
            $groupname = Group::where('id', $value)->select('name')->first();
            return false;
        }
    }

    public function message()
    {
        return 'In der Gruppe ' .$groupname. ' existieren keine User!';
    }
}

Answer 1

add your variables to $this scope. then you can access it.

example code

public function passes()
{
    $this->group_name = Group::where('id', $value)->select('name')->first();
}

public function message()
{
    return 'In der Gruppe ' . $this->group_name . ' existieren keine User!';
}