title: Query String Preservation in Laravel
body: <p>I am newbie of Laravel, PHP and web development. I have two tabs Teachers 
  <code>&lt;a href='/teachers'&gt;Teachers&lt;/a&gt;</code> and Courses <code>&lt;a href='/courses'&gt;Courses&lt;/a&gt;</code> and two drop-downs i.e. Category, City in header navigation. Teachers and Courses tabs take me to their respective pages <code>localhost/teachers</code> and <code>localhost/courses</code>. Category and City add query strings as follows by choosing Belgium and O-Levels from their drop-downs. </p>
  
  <p><code>localhost/teachers?city=belgium&amp;category=Olevels</code> </p>
  
  <p>and I want the same query string when I click from one link to to other.</p>