Adding a variable into a custom table in Laravel - php

Question

I have a table which is a combination of 3 tables being passed to my blade file.
$late_books = Borrow::join('books', 'borrows.book_id', '=', 'books.id')
->join('borrowers', 'borrows.borrower_id', '=', 'borrowers.id')
->where('borrows.late_return_status', '=', 1)
->where('borrows.return_date', '=', null)
->get(['borrowers.borrower_name', 'borrowers.IC', 'borrowers.phone_no' ,'books.ISBN', 'books.book_title', 'books.year','books.author', 'books.publisher_name',
'borrows.issue_date', 'borrows.due_date']);
Within the blade file, i need to add a button which has the fines.
$due_date = \Carbon\Carbon::parse($late_books->first()->due_date);
$today = \Carbon\Carbon::now();
$result = $due_date->diffInDays($today);
$fine = $result * 5;
The fine should be specific to each book borrowed, the current way ive done it shows same fine for all books.
return view('admin.latereturn', compact('late_books', 'search', 'fine'));
Im sure this question has been asked in some form before but im not exactly sure what to search. Sorry if it's a duplicate.

Answer 1

If i get you
you can Defining An Accessor for appending attribute inside your model as the following:
class Borrow extends Model
{
protected $appends = ['fine'];
public function getFineAttribute()
{
$due_date = \Carbon\Carbon::parse($this->due_date);
$today = \Carbon\Carbon::now();
$result = $due_date->diffInDays($today);
$fine = $result * 5;
return $fine;
}
}
and you can access fine attribute inside your blade as $model_instance->fine
#foreach($late_books as $lb)
<span> {{$lb->fine}} </span>
#endforeach
I hope this helpful for you