Booking Form allowing units, and updating qty with number of units * days

readme.md

Instructions:

1. Add a hidden quantity field for BTA products in the booking-form.liquid snippet:

   <input type="hidden" id="quantity" name="quantity" value="1" />

2. Make sure the normal quantity input is not rendered for BTA products (e.g. in sections/product-template.liquid).

For example, this is how it should look on the Debut theme (sections/product-template.liquid:183):

            {% if section.settings.show_quantity_selector %}
              {% unless product.metafields.bookthatapp.config %}
              <div class="product-form__item product-form__item--quantity">
                <label for="Quantity">{{ 'products.product.quantity' | t }}</label>
                <input type="number" id="Quantity" name="quantity" value="1" min="1" class="product-form__input" pattern="[0-9]*">
              </div>
              {% endunless %}
            {% endif %}

3. Add the input for units:

<input type="number" id="units" name="properties[Units]" value="1" min="1" pattern="[0-9]*" />

Note: this is just a regular line item property with the name 'Units'.

It should go just after <div class="booking-form">

You will probably need to copy the markup/CSS classes so that it looks nice. Here is how it should look for Debut (including the hidden quantity input field):

<input type="hidden" id="quantity" name="quantity" value="1" />
  
<div class="product-form__item product-form__item--quantity">
  <label for="Quantity">{{ 'products.product.quantity' | t }}</label>
  <input type="number" id="units" name="properties[Units]" value="1" min="1" class="product-form__input" pattern="[0-9]*" />
</div>

4. Copy the ProductRental Javascript to the booking form snippet (it goes inside the <script> tags).

5. Update cart.liquid as per the cart template section.

6. If the theme shows a count of items in the cart header update it per the cart count section.

Please contact us at support@zetya.com if you need help with this or would like a quote to have us install it for you.

booking-form-rental-period.liquid

{% if product.metafields.bookthatapp.config %}
<div class="booking-form">
    <div>
        {% capture attribute %}booking-start{% endcapture %}
        <label for="{{ attribute }}-{{ product.handle }}">From:</label>
        <input id="{{ attribute }}-{{ product.handle }}" type="text" name="properties[From]" size="12" class="datepicker bta required bta-load-enable bta-dp-start" disabled="disabled"
               data-handle="{{ product.handle }}" data-variant="{{ product.selected_or_first_available_variant.id }}"
               data-bta-product-config="{{ product.metafields.bookthatapp.config }}"
               data-bta-variant-config="{% for variant in product.variants %}{{ variant.id }}:{{ variant.metafields.bookthatapp.config }}{% unless forloop.last %},{% endunless %}{% endfor %}"
               data-bta-range-partner-id="#booking-finish-{{ product.handle }}"
               data-bta-range-days-max="0" data-bta-range-days-min="0" />
    </div>
    <div>
        {% capture attribute %}booking-finish{% endcapture %}
        <label for="{{ attribute }}-{{ product.handle }}">To:</label>
        <input id="{{ attribute }}-{{ product.handle }}" type="text" name="properties[To]" size="12" class="datepicker bta required bta-load-enable bta-dp-finish" disabled="disabled"
               data-bta-range-partner-id="#booking-start-{{ product.handle }}" />
    </div>
    <div class="quantity">
        <label for="quantity">Quantity:</label>
      {% comment %}
        <div class="rental-summary">
          Days: <span class="rental-days"></span><br>
          Total: <span class="rental-total"></span>
        </div>
      {% endcomment %}
        <input type="number" id="units" name="properties[Units]" value="1" min="1" pattern="[0-9]*" />
    </div>
    <div class="bta-validation-messages" style="display:none">
      <p class="bta-validation-date-missing">Please select a date</p>
    </div>
    <input type="hidden" id="quantity" name="quantity" value="1" />
</div>

<script>
  // rental product behaviour
  var ProductRental = function() {
    _this = this;
    
    this.configs = {};
    this.durations = [];

    this.init = function() {
      '{{ product.metafields.bookthatapp.config }}'.replace(new RegExp("([^?=&]+)(=([^&]*))?", "g"), function($0, $1, $2, $3) {_this.configs[$1] = $3;});
      _this.durations = JSON.parse(unescape(_this.configs.durations)).sort(function(a, b) {
        return a.position - b.position;
      });
      _this.hideDurationOptionSelect();
      _this.initFormListeners();
    };

    this.initFormListeners = function() {
      var form = $('form[action="/cart/add"]');

      form.on('bta.dataLoaded, bta.datetimeChange', function(event, form) {
        _this.updateQuantity();
      });

      form.on('click', '.js-qty__adjust', function() {
        _this.updateQuantity();
      });

      $('#units').change(function() {
        _this.updateQuantity();
      });
    };

    this.updateQuantity = function() {
      var form = $('form[action="/cart/add"]').data('bta.bookingForm'),
          start = form.getStartDateTime(),
          finish = form.getFinishDateTime();

      $('.rental-summary .rental-total').text('-');
      $('.rental-summary .rental-days').text('-');

      if (start && finish) {
        var days = form.rangeCount();

        // total rent = number of units * number of days * variant.price
        var variantId = bta.findSelectedVariantId(),
            units = parseInt($('#units').val(), 10),
            variant = _this.findVariant(variantId),
            total = variant.price * units * days;

        $('#quantity').val(units * days);

        $('.rental-summary .rental-days').text(days);
        $('.rental-summary .rental-total').text(_this.formatMoney(total));
      }
    };

    this.findVariant = function(id) {
      for (var i = 0; i < _this.product.variants.length; i++) {
        if (_this.product.variants[i].id == id) {
          return _this.product.variants[i];
        }
      }
    };

    this.hideDurationOptionSelect = function() {
      // hide option for duration (bypass .selector-wrapper inside booking form)
      $('.selector-wrapper:nth-child(' + _this.configs['duration_option_position'] + ')').filter(function(index) {
        return $(this).parents('.booking-form').length == 0;
      }).hide();  
    };

    this.formatMoney = function(total) {
      return Shopify.formatMoney(total, '{{ shop.money_format }}')
    };

    this.product = {{ product | json }};
  }

  document.addEventListener("DOMContentLoaded", function(event) { 
    new ProductRental().init();
  });

  var bta = {
  	productId: {{ product.id }}
  }
</script>
{% endif %}

cart-count-header.liquid

{% assign cart_count = 0 %}
{% for item in cart.items %}
  {% if item.product.metafields.bookthatapp.config %}
    {% assign cart_count = cart_count | plus: item.properties.Units %}
  {% else %}
    {% assign cart_count = item.quantity %}
  {% endif %}
{% endfor %}
<span class="icon-cart"></span> {{ 'layout.general.cart' | t }} (<span class="cart_count">{{ cart_count }}</span>)

cart-template-section.liquid

1. Display line item property dates:

  {% if item.product.metafields.bookthatapp.config %}
    <p>{{ item.properties.From }} - {{ item.properties.To }}</p>
  {% else %}
    // ususal guff
  {% endif %}

2. Show units for quantity:

  {% if item.product.metafields.bookthatapp.config %}
    {{ item.quantity | divided_by: item.properties.Units }} days x {{ item.properties.Units }}
    <input type="hidden" name="updates[]" id="Updates_{{ item.id }}" value="{{ item.quantity }}" data-line="{{ forloop.index }}">
    <a href="/cart/change?line={{ forloop.index }}&quantity=0">Remove</a>
  {% else %}
    <input type="number" name="updates[]" id="updates_{{ item.id }}" value="{{ item.quantity }}" min="0" data-line="{{ forloop.index }}">
  {% endif %}

styles.scss.css

/* BookThatApp */
.booking-form {
  display: -ms-flex;
  display: -webkit-flex;
  display: flex;

  > div {
    padding: 10px 0;
    margin-right: 20px;
  }

  > div:last-child {
    margin-right: 0px;
  }
  
  #units {min-width: 50px}
}