# Validator over multiple fields

**URL:** https://discourse.laminas.dev/t/validator-over-multiple-fields/675
**Category:** Components & MVC
**Created:** [August 6, 2018, 10:09am UTC](https://discourse.laminas.dev/t/validator-over-multiple-fields/675 "2018-08-06T10:09:10Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![cbichis](https://avatars.discourse-cdn.com/v4/letter/c/dc4da7/32.png) [@cbichis](https://discourse.laminas.dev/u/cbichis)
#### Post date: [August 6, 2018, 10:09am UTC](https://discourse.laminas.dev/t/validator-over-multiple-fields/675/1 "2018-08-06T10:09:10Z")

</div>

Hi,

I am wondering what would be the best solution for one input filter with this specs:

1. individual inputs are filtered/validated
2. then a more complex rule, to validate over one general rule (which takes into consideration multiple fields)

Currently I am doing #2 by overwriting the isValid from InputFilter derived class. Is this the best approach ?