how to submit form using button in cs cart - cs-cart

Question

<div class="ty-company-fields">
<div class="apply_for_vendor_account">
<h1 class="tygh-top-panel ty-dropdown-box__title ty-mainbox-simple-title ty-mainbox-simple-container clearfix ty-homepage-vendors">Calculator</h1>
<form action="" method="post" name="calculator" id="calculator">
<div class="ty-control-group">
<label for="contact_form" class="ty-control-group__title cm-required ty-input-text cm-focus" >Please Enter First Number</label>
<input type="text" name="cal[value1]" id="contact_form" size="32" value="{$cal.value1}" class="ty-input-text cm-focus ty-control-group_title cm-required" />
</div>
<div class="ty-control-group">
<label for="contact_form_number" class="ty-control-group__title cm-required">Please Enter Second Number</label>
<input type="text" name="cal[value2]" id="contact_form_number" class="ty-input-text cm-focus ty-control-group_title cm-required" size="32" value="{$cal.value2}" />
</div>
{if $result }
<p>The Result is: {$result}</p>
{/if}
<div class="buttons-container">
{include file="buttons/button.tpl" but_text=__("submit") but_name="dispatch[calculator2.add]" but_id="contact" but_meta="ty-btn__primary" value = "+" data-ca-target-form="calculator" data-ca-dispatch="dispatch[calculator.calculator]"}
{include file="buttons/button.tpl" but_text=__("submit") but_name="dispatch[calculator.add]" but_id="contact" but_meta="ty-btn__primary" value = "+"}
{include file="buttons/button.tpl" but_text=__("submit") but_name="dispatch[calculator.add]" but_id="contact" but_meta="ty-btn__primary" value = "+"}
{include file="buttons/button.tpl" but_text=__("submit") but_name="dispatch[calculator.add]" but_id="contact" but_meta="ty-btn__primary" value = "+"}
</div>
</form>
</div>
</div>

Answer 1

you can use the normal form and normal submit button, Normal way is also works fine in cs cart.
In this case, when you press the button the whole values are post to controller calculator.add and take the actions.

Answer 2

Inside form tag in action attribute, you need this:
<form action="{""|fn_url}" method="post" name="calculator" id="calculator">
...
</form>
In the first parameter you could also insert a specific dispatch value, for example calculator.manage if you want to navigate to specific page of yours or leave it empty.
Moreover, inside your tpl file add this at the bottom (and inside capture smarty tag):
{capture name="buttons"}
{include file="buttons/save.tpl" but_name="dispatch[calculator.manage]" but_role="submit-link" but_target_form="calculator"}
{/capture}
this capture smarty tag, will add the general Save button of cs-cart, at the right top corner.
Now, you probably have a controller file named calculator.php which also contain code like that:
if($mode == "manage") {
//your code here
}