woocommerce/classes/class-wc-product-variation.php

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<?php
/**
* Product Variation Class
*
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* The WooCommerce product variation class handles product variation data.
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*
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* @class WC_Product_Variation
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* @package WooCommerce
* @category Class
* @author WooThemes
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*/
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class WC_Product_Variation extends WC_Product {
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var $variation_data;
var $variation_id;
var $variation_has_length;
var $variation_has_width;
var $variation_has_height;
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var $variation_has_weight;
var $variation_has_price;
var $variation_has_sale_price;
var $variation_has_stock;
var $variation_has_sku;
var $variation_shipping_class;
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var $variation_shipping_class_id;
var $variation_has_tax_class;
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/**
* Loads all product data from custom fields
*
* @param int $id ID of the product to load
*/
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function __construct( $variation_id, $parent_id = '', $parent_custom_fields = '' ) {
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$this->variation_id = $variation_id;
$product_custom_fields = get_post_custom( $this->variation_id );
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$this->variation_data = array();
foreach ( $product_custom_fields as $name => $value ) :
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if ( ! strstr( $name, 'attribute_' ) ) continue;
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$this->variation_data[$name] = $value[0];
endforeach;
/* Get main product data from parent */
$this->id = ($parent_id>0) ? $parent_id : wp_get_post_parent_id( $this->variation_id );
if (!$parent_custom_fields) $parent_custom_fields = get_post_custom( $this->id );
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// Define the data we're going to load from the parent: Key => Default value
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$load_data = array(
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'sku' => '',
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'price' => 0,
'visibility' => 'hidden',
'stock' => 0,
'stock_status' => 'instock',
'backorders' => 'no',
'manage_stock' => 'no',
'sale_price' => '',
'regular_price' => '',
'weight' => '',
'length' => '',
'width' => '',
'height' => '',
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'tax_status' => 'taxable',
'tax_class' => '',
'upsell_ids' => array(),
'crosssell_ids' => array()
);
// Load the data from the custom fields
foreach ( $load_data as $key => $default )
$this->$key = ( isset( $parent_custom_fields['_' . $key][0] ) && $parent_custom_fields['_' . $key][0] !== '' ) ? $parent_custom_fields['_' . $key][0] : $default;
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$this->product_type = 'variable';
$this->variation_has_sku = $this->variation_has_stock = $this->variation_has_weight = $this->variation_has_length = $this->variation_has_width = $this->variation_has_height = $this->variation_has_price = $this->variation_has_sale_price = false;
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/* Override parent data with variation */
if ( isset( $product_custom_fields['_sku'][0] ) && ! empty( $product_custom_fields['_sku'][0] ) ) {
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$this->variation_has_sku = true;
$this->sku = $product_custom_fields['_sku'][0];
}
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if ( isset( $product_custom_fields['_stock'][0] ) && $product_custom_fields['_stock'][0] !== '' ) {
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$this->variation_has_stock = true;
$this->manage_stock = 'yes';
$this->stock = $product_custom_fields['_stock'][0];
}
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if ( isset( $product_custom_fields['_weight'][0] ) && $product_custom_fields['_weight'][0] !== '' ) {
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$this->variation_has_weight = true;
$this->weight = $product_custom_fields['_weight'][0];
}
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if ( isset( $product_custom_fields['_length'][0] ) && $product_custom_fields['_length'][0] !== '' ) {
$this->variation_has_length = true;
$this->length = $product_custom_fields['_length'][0];
}
if ( isset( $product_custom_fields['_width'][0] ) && $product_custom_fields['_width'][0] !== '' ) {
$this->variation_has_width = true;
$this->width = $product_custom_fields['_width'][0];
}
if ( isset( $product_custom_fields['_height'][0] ) && $product_custom_fields['_height'][0] !== '' ) {
$this->variation_has_height = true;
$this->height = $product_custom_fields['_height'][0];
}
if ( isset( $product_custom_fields['_price'][0] ) && $product_custom_fields['_price'][0] !== '' ) {
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$this->variation_has_price = true;
$this->price = $product_custom_fields['_price'][0];
$this->regular_price = $product_custom_fields['_price'][0];
}
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if ( isset( $product_custom_fields['_sale_price'][0] ) && $product_custom_fields['_sale_price'][0] !== '' ) {
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$this->variation_has_sale_price = true;
$this->sale_price = $product_custom_fields['_sale_price'][0];
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if ($this->sale_price < $this->price) $this->price = $this->sale_price;
}
if ( isset( $product_custom_fields['_downloadable'][0] ) && $product_custom_fields['_downloadable'][0] == 'yes' ) {
$this->downloadable = 'yes';
} else {
$this->downloadable = 'no';
}
if ( isset( $product_custom_fields['_virtual'][0] ) && $product_custom_fields['_virtual'][0] == 'yes' ) {
$this->virtual = 'yes';
} else {
$this->virtual = 'no';
}
if ( isset( $product_custom_fields['_tax_class'][0] ) ) {
$this->variation_has_tax_class = true;
$this->tax_class = $product_custom_fields['_tax_class'][0];
}
$this->total_stock = $this->stock;
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}
/** Returns whether or not the variation is visible */
function is_visible() {
$visible = true;
// Out of stock visibility
if ( get_option('woocommerce_hide_out_of_stock_items') == 'yes' && ! $this->is_in_stock() )
$visible = false;
return apply_filters('woocommerce_product_is_visible', $visible, $this->id);
}
/** Returns whether or not the variations parent is visible */
function parent_is_visible() {
return parent::is_visible();
}
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/**
* Get variation ID
*
* @return int
*/
function get_variation_id() {
return (int) $this->variation_id;
}
/**
* Get variation attribute values
*
* @return array of attributes and their values for this variation
*/
function get_variation_attributes() {
return $this->variation_data;
}
/**
* Get variation attribute values
*
* @return string containing the formatted price
*/
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function get_price_html() {
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if ($this->variation_has_price || $this->variation_has_sale_price) :
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$price = '';
if ($this->price!=='') :
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if ($this->variation_has_sale_price) :
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$price .= '<del>'.woocommerce_price( $this->regular_price ).'</del> <ins>'.woocommerce_price( $this->sale_price ).'</ins>';
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$price = apply_filters('woocommerce_variation_sale_price_html', $price, $this);
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else :
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$price .= woocommerce_price( $this->price );
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$price = apply_filters('woocommerce_variation_price_html', $price, $this);
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endif;
endif;
return $price;
else :
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return woocommerce_price(parent::get_price());
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endif;
}
/**
* Gets the main product image
*/
function get_image( $size = 'shop_thumbnail' ) {
global $woocommerce;
if ($this->variation_id && has_post_thumbnail($this->variation_id)) :
echo get_the_post_thumbnail($this->variation_id, $size);
elseif (has_post_thumbnail($this->id)) :
echo get_the_post_thumbnail($this->id, $size);
elseif ($parent_id = wp_get_post_parent_id( $this->id ) && has_post_thumbnail($parent_id)) :
echo get_the_post_thumbnail($parent_id, $size);
else :
echo '<img src="'. woocommerce_placeholder_img_src() . '" alt="Placeholder" width="'.$woocommerce->get_image_size('shop_thumbnail_image_width').'" height="'.$woocommerce->get_image_size('shop_thumbnail_image_height').'" />';
endif;
}
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/**
* Reduce stock level of the product
*
* @param int $by Amount to reduce by
*/
function reduce_stock( $by = 1 ) {
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global $woocommerce;
if ( $this->variation_has_stock ) {
if ( $this->managing_stock() ) {
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$this->stock = $this->stock - $by;
$this->total_stock = $this->total_stock - $by;
update_post_meta( $this->variation_id, '_stock', $this->stock );
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$woocommerce->clear_product_transients( $this->id ); // Clear transient
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// Check parents out of stock attribute
if ( ! $this->is_in_stock() ) {
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// Check parent
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$parent_product = new WC_Product( $this->id );
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// Only continue if the parent has backorders off
if ( ! $parent_product->backorders_allowed() && $parent_product->get_total_stock() <= 0 ) {
update_post_meta( $this->id, '_stock_status', 'outofstock' );
}
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}
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return $this->stock;
}
} else {
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return parent::reduce_stock( $by );
}
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}
/**
* Increase stock level of the product
*
* @param int $by Amount to increase by
*/
function increase_stock( $by = 1 ) {
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global $woocommerce;
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if ($this->variation_has_stock) :
if ($this->managing_stock()) :
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$this->stock = $this->stock + $by;
$this->total_stock = $this->total_stock + $by;
update_post_meta( $this->variation_id, '_stock', $this->stock );
$woocommerce->clear_product_transients( $this->id ); // Clear transient
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// Parents out of stock attribute
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if ( $this->is_in_stock() )
update_post_meta( $this->id, '_stock_status', 'instock' );
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return $this->stock;
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endif;
else :
return parent::increase_stock( $by );
endif;
}
/**
* Get the shipping class, and if not set, get the shipping class of the parent
*/
function get_shipping_class() {
if (!$this->variation_shipping_class) :
$classes = get_the_terms( $this->variation_id, 'product_shipping_class' );
if ($classes && !is_wp_error($classes)) $this->variation_shipping_class = current($classes)->slug; else $this->variation_shipping_class = parent::get_shipping_class();
endif;
return $this->variation_shipping_class;
}
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/** Returns the product shipping class ID */
function get_shipping_class_id() {
if ( ! $this->variation_shipping_class_id ) {
$classes = get_the_terms( $this->variation_id, 'product_shipping_class' );
if ( $classes && ! is_wp_error( $classes ) )
$this->variation_shipping_class_id = current( $classes )->term_id;
else
$this->variation_shipping_class_id = parent::get_shipping_class_id();
}
return (int) $this->variation_shipping_class_id;
}
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}
/** Deprecated */
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class woocommerce_product_variation extends WC_Product_Variation {
public function __construct( $variation_id, $parent_id = '', $parent_custom_fields = '' ) {
_deprecated_function( 'woocommerce_product_variation', '1.4', 'WC_Product_Variation()' );
parent::__construct( $variation_id, $parent_id, $parent_custom_fields );
}
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}