// Basic flow
1. Extra templates are added to the product page using the layout xml file app/design/frontend/base/default/layout/payperrentals.xml note the line <block type=”payperrentals/catalog_product_view_rental” name=”product.info.payperrentals” as=”product-rental” template=”payperrentals/catalog/product/view_rental.phtml”> and <block type=”payperrentals/catalog_product_view_price” name=”product.info.payperrentals.price” as=”product-price” template=”catalog/product/price.phtml”/> this adds the calendar and pricing templates
2. Notice in app/design/frontend/base/default/template/payperrentals/catalog/product/view_rental.phtml the load order. First the php_initialisations.phtml is called. app/design/frontend/base/default/template/payperrentals/calendar/php_initialisations.phtml loads all variables so they are ready for the rental calendar and page like: product id, disabled dates, calendar settings, and time options. These are loaded using our helpers.
Further down in the view_rental.phtml template you will see where it shows the min/max periods, Deposit, and price using ITwebexperts_Payperrentals_Helper_Price::getPriceListHtml($_product);
The calendar itself is loaded with require($templateGlobalCalendar); which is the file app/design/frontend/base/default/template/payperrentals/calendar/global_calendar.phtml within this file you will see the calendar form fields like <input type=”text” name=”read_start_date”/> and <input type=”text” name=”read_end_date” class=”readEndDate” <?php if ($_autoSelectEndDate) echo ‘readonly=”readonly”‘; ?> />
2B. Disabled dates use AJAX to update the calendar. This is done with the function updateBookedDates in app/design/frontend/base/default/template/payperrentals/calendar/frontend_functions.phtml notice the ajax in this function using this line: url: ‘‘,
data: selfObj.closest(‘form’).find(‘*’).serialize() + ‘&qty=’ + $jppr(‘#qty’).val(),
So here we are referencing app/code/community/ITwebexperts/Payperrentals/controllers/AjaxController.php the ajax controller and passing in an array of product ids and quantities. This ajax controller returns an html array of booked dates using our main function ITwebexperts_Payperrentals_Helper_Data::getBookedQtyForProducts to get booked dates array.
3. The create calendar function and mouse down listener (to show calendar when mouse clicks on start and end field) is in app/design/frontend/base/default/template/payperrentals/calendar/global_calendar_functions.phtml
listener for mousedown
$jppr(‘<?php echo $_jsContainerPrefix ?> .readStartDate, <?php echo $_jsContainerPrefix ?> .readEndDate’).mousedown(function (event) {
within that listener, createCalendar<?php echo $_jsFunctionPrefix ?>($jppr(‘<?php echo $_jsContainerPrefix ?> .datePicker’)); is called to attach the date picker.
4. Dates are added to cart using Magento custom options. app/code/community/ITwebexperts/Payperrentals/Helper/Rendercart.php the prepareForCartAdvanced function.
5. After order is placed an observer is called sales_order_place_after (defined in the app/code/community/ITwebexperts/Payperrentals/etc/config.xml file) which calls the observer’s reserveInventory function. This in turn references the helper function which reserves inventory.
