webshop/app/templates/partials/checkout-item-form.html

<form class="checkout-item" action="/checkout" method="POST">
  {% if operation == 'delete' %}
  <button type="submit" class="fs-small btn-checkout-remove bd-deep-brown fgc-terre bgc-gaow">remove</button>
  {% elif operation == 'remove' %}
  <button type="submit" class="db psr icon-p">{% include "partials/icon-minus.html" %}</button>
  {% elif operation == 'add' %}
  <button id="button-plus" type="submit" {% if not item.is_selectable %}disabled {% endif %}class="{% if not item.is_selectable %}cura {% endif %}db psr icon-p">{% include "partials/icon-plus.html" %}</button>
  {% endif %}
  <input type="hidden" id="page" name="page" value="checkout">
  <input type="hidden" id="operation" name="operation" value="{{ operation }}">
  {% if item.options.product_variation_id %}
  <input type="hidden" id="product_id" name="product_id" value="{{ item.options.product_variation_id }}">
  {% else %}
  <input type="hidden" id="product_id" name="product_id" value="{{ item.product_id }}">
  {% endif %}
  <input type="hidden" id="product_path" name="product_path" value="{{ item.path }}">
  <input type="hidden" id="price" name="price" value="{{ item.price }}">
  {% if item.options.style %}
  <input type="hidden" id="style" name="style" value="{{ item.options.style }}">
  {% endif %}
  {% if item.options.size %}
  <input type="hidden" id="size" name="size" value="{{ item.options.size }}">
  {% endif %}
  {% if operation == 'delete' %}
  <input type="hidden" id="quantity_delete" name="quantity" value="{{ item.quantity }}">
  {% elif operation in 'remove' %}
  <input type="hidden" id="quantity_remove" name="quantity" value="1">
  {% elif operation in 'add' %}
  <input type="hidden" id="quantity_add" name="quantity" value="1">
  {% elif operation == 'manual' %}
  <input type="text" aria-label="Quantity" id="quantity_manual" name="quantity" value="{{ item.quantity }}" class="fs-bigger sm-fs-huge tac w5r mr1 ml1" autocomplete="off">
  {% endif %}
  <input type="hidden" name="csrftoken" value="{{ request.scope.csrftoken() }}">
</form>