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<?php
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/**
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* Field handler to present an add to cart form for the product..
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*/
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class commerce_cart_handler_field_add_to_cart_form extends views_handler_field_entity {
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function option_definition() {
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$options = parent::option_definition();
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$options['show_quantity'] = array('default' => FALSE);
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$options['default_quantity'] = array('default' => 1);
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$options['combine'] = array('default' => TRUE);
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$options['display_path'] = array('default' => FALSE);
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$options['line_item_type'] = array('product' => t('Product'));
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return $options;
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}
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/**
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* Provide the add to cart display options.
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*/
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function options_form(&$form, &$form_state) {
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parent::options_form($form, $form_state);
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$form['show_quantity'] = array(
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'#type' => 'checkbox',
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'#title' => t('Display a textfield quantity widget on the add to cart form.'),
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'#default_value' => $this->options['show_quantity'],
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);
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$form['default_quantity'] = array(
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'#type' => 'textfield',
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'#title' => t('Default quantity'),
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'#default_value' => $this->options['default_quantity'] <= 0 ? 1 : $this->options['default_quantity'],
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'#element_validate' => array('commerce_cart_field_formatter_settings_form_quantity_validate'),
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'#size' => 16,
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);
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$form['combine'] = array(
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'#type' => 'checkbox',
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'#title' => t('Attempt to combine like products on the same line item in the cart.'),
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'#description' => t('The line item type, referenced product, and data from fields exposed on the Add to Cart form must all match to combine.'),
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'#default_value' => $this->options['combine'],
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);
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// Add a conditionally visible line item type element.
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$types = commerce_product_line_item_types();
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if (count($types) > 1) {
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$form['line_item_type'] = array(
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'#type' => 'select',
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'#title' => t('Add to Cart line item type'),
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'#options' => array_intersect_key(commerce_line_item_type_get_name(), drupal_map_assoc($types)),
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'#default_value' => !empty($this->options['line_item_type']) ? $this->options['line_item_type'] : 'product',
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);
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}
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else {
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$form['line_item_type'] = array(
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'#type' => 'hidden',
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'#value' => key($types),
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);
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}
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if ($this->view->display[$this->view->current_display]->display_plugin == 'page') {
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$title = t("Link products added to the cart from this page display to the View's path.");
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}
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else {
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$title = t('Link products added to the cart from this display to the current path the customer is viewing where the View is rendered.');
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}
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$form['display_path'] = array(
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'#type' => 'checkbox',
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'#title' => $title,
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'#default_value' => $this->options['display_path'],
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);
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}
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function render($values) {
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// Attempt to load the specified product.
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$product = $this->get_value($values);
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if (!empty($product)) {
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// Extract a default quantity for the Add to Cart form line item.
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$default_quantity = $this->options['default_quantity'] <= 0 ? 1 : $this->options['default_quantity'];
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$product_ids = array($product->product_id);
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// Build the line item we'll pass to the Add to Cart form.
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$line_item = commerce_product_line_item_new($product, $default_quantity, 0, array(), $this->options['line_item_type']);
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$line_item->data['context']['product_ids'] = $product_ids;
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$line_item->data['context']['add_to_cart_combine'] = $this->options['combine'];
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// Generate a form ID for this add to cart form.
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$form_id = commerce_cart_add_to_cart_form_id($product_ids);
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// Add the display path to the line item's context data array if specified.
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if ($this->options['display_path']) {
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if ($this->view->display[$this->view->current_display]->display_plugin == 'page') {
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$line_item->data['context']['display_path'] = $this->view->display[$this->view->current_display]->display_options['path'];
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}
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else {
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$line_item->data['context']['display_path'] = current_path();
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}
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}
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// Store the View data in the context data array as well.
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$line_item->data['context']['view'] = array(
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'view_name' => $this->view->name,
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'display_name' => $this->view->current_display,
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'human_name' => $this->view->human_name,
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'page' => $this->view->current_page,
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);
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// Build the Add to Cart form using the prepared values.
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$form = drupal_get_form($form_id, $line_item, $this->options['show_quantity'], array());
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return drupal_render($form);
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}
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}
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}
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