Select Join Where and orWhere in Laravel 5 -

i have 2 tables- jobseekers , resumes. try achieve 3 search options- entering 1. "first name", 2. "last name", , 3. "first name + last name". current code below:

    $q = \request::get('keyword');     $data['resume'] = resume::join('jobseekers', 'jobseekers.user_id', '=', 'resumes.user_id')         ->where('jobseekers.first_name','like','%'.$q.'%')         ->orwhere('jobseekers.last_name','like','%'.$q.'%')         ->orderby('resumes.updated_at','desc')->paginate(50); 

using texbox (keywords), when search last / first name, works fine. however, when type both first + last name in textbox, shows no result.

please share me how achieve this.

using concat():

 ->orwhere(db::raw("concat(jobseekers.first_name, ' ', jobseekers.last_name)"), 'like','%'.$q.'%');