belongsTo(Plant::class); } public function line(): BelongsTo { return $this->belongsTo(Line::class); } public function workGroupMaster(): BelongsTo { return $this->belongsTo(WorkGroupMaster::class); } public function machine(): BelongsTo { return $this->belongsTo(Machine::class); } // public function machine() // { // return $this->belongsTo(\App\Models\Machine::class, 'machine_id'); // } public function item(): BelongsTo { return $this->belongsTo(Item::class); } }