*/ protected $casts = [ 'created_at' => 'datetime', 'updated_at' => 'datetime', 'deleted_at' => 'datetime', ]; public function group_division(): BelongsTo { return $this->belongsTo(Group::class, 'group_division_id'); } public function department(): HasMany { return $this->hasMany(OrganizationUnit::class, 'division_id'); } public function division_approver(): HasMany { return $this->hasMany(Approver::class, 'type_id'); } }