In Opencart, viewing a product and adding it to the cart always adds 1 - how to add more than one item

Practice




In Opencart, when viewing a product and adding it to the cart, the quantity is always 1 — how do I make it possible to add more than one item to the cart

in the template file product.tpl
add an onclick with a function






 

onclick="addToCart($('.cart input[name=product_id]').val(),
$('.cart input[name=quantity]').val()

);"
class="button" />

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