<?php namespace App; use Illuminate\Database\Eloquent\Model; class Transaction extends Model { protected $fillable = [ 'student_id', 'book_id', 'borrowed_at', 'returned_at', 'fines', 'status' ]; public function student() { return $this->belongsTo('App\Person', 'student_id'); } public function book() { //model, foreign key in tsis model, primary key of relation return $this->belongsTo('App\Book', 'book_id', 'id'); } public function scopeNotReturnedYet($query) { return $query->where('status', 0); } public function scopeReturned($query) { return $query->where('status', 1); } }