How to add a required custom field in cash on delivery gateway

I added a custom field in woocommerce payment gateway (cash on delivery) and I want it to be required, so I add the following piece of code in my child theme/woocommerce/checkout/payment-method.php.

<?php if ( $gateway->id == "cod" ) : ?>
<div class="payment_box payment_method_<?php echo $gateway->id; ?>" <?php if ( ! $gateway->chosen ) : ?>style="display:none;"<?php endif; ?>>
    <?php $gateway->payment_fields(); ?>
    </br>       
    <label>Which time is best for delivery?</label></br>
    <input type="text" name='cod_custom_field' required></br>                       
</div>

but then the field becomes required for the other payment gateways as well!. So how to make the cod custom filed required without effecting other gateways.

I tried this code also, but I got the same result!

<div class="payment_box payment_method_<?php echo $gateway->id; ?>" <?php if ( ! $gateway->chosen ) : ?>style="display:none;"<?php endif; ?>>
    <?php $gateway->payment_fields(); ?>
    </br>       
    <label>Which time is best for delivery?</label></br>
    <input type="text" name='cod_custom_field' <?php echo ($gateway->id=='cod') ? 'required' : ''; ?>></br>                       
</div>

Please help in this or guide me to activate the shipping info on just COD option.
Thanks

• This topic was modified 7 years, 3 months ago by shaikhah.
• This topic was modified 7 years, 3 months ago by shaikhah.