title: How to manipulate data before exporting in laravel 5.7 and excel 3.1
body: <p>I want to customize column names, concatinate data in one column. Can put some condition on data.</p>
  
  <p>Below is sample image, In which format data would show. How to make possible this-</p>
  
  <p><a href="https://i.stack.imgur.com/BKWha.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BKWha.png" alt="enter image description here"></a></p>