*/ protected $casts = [ 'created_at' => 'datetime', 'updated_at' => 'datetime', 'deleted_at' => 'datetime', ]; public function department(): BelongsTo { return $this->belongsTo(Department::class, 'department_id'); } public function unit(): HasMany { return $this->hasMany(OrganizationUnit::class, 'section_id'); } public function section_approver(): HasMany { return $this->hasMany(Approver::class, 'type_id'); } }