'integer', 'student_id' => 'integer', 'class_section_id' => 'integer', 'score' => 'integer', // change to 'decimal:2' if score is not int ]; /* Optional relationships */ public function competition() { return $this->belongsTo(Competition::class, 'competition_id'); } public function student() { return $this->belongsTo(Student::class, 'student_id'); } public function classSection() { return $this->belongsTo(ClassSection::class, 'class_section_id'); } }