ProductType::class, 'custom_data' => 'array', 'infrastructure_status' => 'array', 'area' => 'decimal:2', 'price_per_unit' => 'decimal:2', 'total_price' => 'decimal:2', 'building_density' => 'decimal:2', ]; public function project() { return $this->belongsTo(Project::class); } public function contracts() { return $this->hasMany(Contract::class); } public function settlements() { return $this->hasMany(Settlement::class); } public function appendices() { return $this->hasMany(Appendix::class); } }