An Example of using StoreMarketingQueryParamsMiddleware.php

form.blade.php

<!-- .... -->
<!-- UTM params -->
<input type="hidden" name="utm_source" value="{{ session('utm_source') }}">
<input type="hidden" name="utm_medium" value="{{ session('utm_medium') }}">
<input type="hidden" name="utm_campaign" value="{{ session('utm_campaign') }}">
<input type="hidden" name="utm_term" value="{{ session('utm_term') }}">
<input type="hidden" name="utm_content" value="{{ session('utm_content') }}">

<!-- Other handy inputs for marketing ROIs -->
<input type="hidden" name="url" value="{{request()->url()}}">
<input type="hidden" name="ip_address" class="ip" value="{{request()->ip()}}">
<input type="hidden" name="locale" value="{{ app()->getLocale() }}">
<!-- And you might want to add other inputs like: country, currency ..etc -->

<!-- .... -->