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<?php
/**
* Product Variation
*
* The WooCommerce product variation class handles product variation data.
*
* @package WooCommerce\Classes
* @version 3.0.0
*/
defined( 'ABSPATH' ) || exit;
/**
* Product variation class.
*/
class WC_Product_Variation extends WC_Product_Simple {
/**
* Post type.
*
* @var string
*/
protected $post_type = 'product_variation';
/**
* Parent data.
*
* @var array
*/
protected $parent_data = array(
'title' => '',
'sku' => '',
'manage_stock' => '',
'backorders' => '',
'stock_quantity' => '',
'weight' => '',
'length' => '',
'width' => '',
'height' => '',
'tax_class' => '',
'shipping_class_id' => '',
'image_id' => '',
'purchase_note' => '',
);
/**
* Override the default constructor to set custom defaults.
*
* @param int|WC_Product|object $product Product to init.
*/
public function __construct( $product = 0 ) {
$this->data['tax_class'] = 'parent';
$this->data['attribute_summary'] = '';
parent::__construct( $product );
}
/**
* Prefix for action and filter hooks on data.
*
* @since 3.0.0
* @return string
*/
protected function get_hook_prefix() {
return 'woocommerce_product_variation_get_';
}
/**
* Get internal type.
*
* @return string
*/
public function get_type() {
return 'variation';
}
/**
* If the stock level comes from another product ID.
*
* @since 3.0.0
* @return int
*/
public function get_stock_managed_by_id() {
return 'parent' === $this->get_manage_stock() ? $this->get_parent_id() : $this->get_id();
}
/**
* Get the product's title. For variations this is the parent product name.
*
* @return string
*/
public function get_title() {
return apply_filters( 'woocommerce_product_title', $this->parent_data['title'], $this );
}
/**
* Get product name with SKU or ID. Used within admin.
*
* @return string Formatted product name
*/
public function get_formatted_name() {
if ( $this->get_sku() ) {
$identifier = $this->get_sku();
} else {
$identifier = '#' . $this->get_id();
}
$formatted_variation_list = wc_get_formatted_variation( $this, true, true, true );
return sprintf( '%2$s (%1$s)', $identifier, $this->get_name() ) . '<span class="description">' . $formatted_variation_list . '</span>';
}
/**
* Get variation attribute values. Keys are prefixed with attribute_, as stored, unless $with_prefix is false.
*
* @param bool $with_prefix Whether keys should be prepended with attribute_ or not, default is true.
* @return array of attributes and their values for this variation.
*/
public function get_variation_attributes( $with_prefix = true ) {
$attributes = $this->get_attributes();
$variation_attributes = array();
$prefix = $with_prefix ? 'attribute_' : '';
foreach ( $attributes as $key => $value ) {
$variation_attributes[ $prefix . $key ] = $value;
}
return $variation_attributes;
}
/**
* Returns a single product attribute as a string.
*
* @param string $attribute to get.
* @return string
*/
public function get_attribute( $attribute ) {
$attributes = $this->get_attributes();
$attribute = sanitize_title( $attribute );
if ( isset( $attributes[ $attribute ] ) ) {
$value = $attributes[ $attribute ];
$term = taxonomy_exists( $attribute ) ? get_term_by( 'slug', $value, $attribute ) : false;
return ! is_wp_error( $term ) && $term ? $term->name : $value;
}
$att_str = 'pa_' . $attribute;
if ( isset( $attributes[ $att_str ] ) ) {
$value = $attributes[ $att_str ];
$term = taxonomy_exists( $att_str ) ? get_term_by( 'slug', $value, $att_str ) : false;
return ! is_wp_error( $term ) && $term ? $term->name : $value;
}
return '';
}
/**
* Wrapper for get_permalink. Adds this variations attributes to the URL.
*
* @param array|null $item_object item array If a cart or order item is passed, we can get a link containing the exact attributes selected for the variation, rather than the default attributes.
* @return string
*/
public function get_permalink( $item_object = null ) {
$url = get_permalink( $this->get_parent_id() );
if ( ! empty( $item_object['variation'] ) ) {
$data = $item_object['variation'];
} elseif ( ! empty( $item_object['item_meta_array'] ) ) {
$data_keys = array_map( 'wc_variation_attribute_name', wp_list_pluck( $item_object['item_meta_array'], 'key' ) );
$data_values = wp_list_pluck( $item_object['item_meta_array'], 'value' );
$data = array_intersect_key( array_combine( $data_keys, $data_values ), $this->get_variation_attributes() );
} else {
$data = $this->get_variation_attributes();
}
$data = array_filter( $data, 'wc_array_filter_default_attributes' );
if ( empty( $data ) ) {
return $url;
}
// Filter and encode keys and values so this is not broken by add_query_arg.
$data = array_map( 'urlencode', $data );
$keys = array_map( 'urlencode', array_keys( $data ) );
return add_query_arg( array_combine( $keys, $data ), $url );
}
/**
* Get the add to url used mainly in loops.
*
* @return string
*/
public function add_to_cart_url() {
$url = $this->is_purchasable() ? remove_query_arg(
'added-to-cart',
add_query_arg(
array(
'variation_id' => $this->get_id(),
'add-to-cart' => $this->get_parent_id(),
),
$this->get_permalink()
)
) : $this->get_permalink();
return apply_filters( 'woocommerce_product_add_to_cart_url', $url, $this );
}
/**
* Get SKU (Stock-keeping unit) - product unique ID.
*
* @param string $context What the value is for. Valid values are view and edit.
* @return string
*/
public function get_sku( $context = 'view' ) {
$value = $this->get_prop( 'sku', $context );
// Inherit value from parent.
if ( 'view' === $context && empty( $value ) ) {
$value = apply_filters( $this->get_hook_prefix() . 'sku', $this->parent_data['sku'], $this );
}
return $value;
}
/**
* Returns the product's weight.
*
* @param string $context What the value is for. Valid values are view and edit.
* @return string
*/
public function get_weight( $context = 'view' ) {
$value = $this->get_prop( 'weight', $context );
// Inherit value from parent.
if ( 'view' === $context && empty( $value ) ) {
$value = apply_filters( $this->get_hook_prefix() . 'weight', $this->parent_data['weight'], $this );
}
return $value;
}
/**
* Returns the product length.
*
* @param string $context What the value is for. Valid values are view and edit.
* @return string
*/
public function get_length( $context = 'view' ) {
$value = $this->get_prop( 'length', $context );
// Inherit value from parent.
if ( 'view' === $context && empty( $value ) ) {
$value = apply_filters( $this->get_hook_prefix() . 'length', $this->parent_data['length'], $this );
}
return $value;
}
/**
* Returns the product width.
*
* @param string $context What the value is for. Valid values are view and edit.
* @return string
*/
public function get_width( $context = 'view' ) {
$value = $this->get_prop( 'width', $context );
// Inherit value from parent.
if ( 'view' === $context && empty( $value ) ) {
$value = apply_filters( $this->get_hook_prefix() . 'width', $this->parent_data['width'], $this );
}
return $value;
}
/**
* Returns the product height.
*
* @param string $context What the value is for. Valid values are view and edit.
* @return string
*/
public function get_height( $context = 'view' ) {
$value = $this->get_prop( 'height', $context );
// Inherit value from parent.
if ( 'view' === $context && empty( $value ) ) {
$value = apply_filters( $this->get_hook_prefix() . 'height', $this->parent_data['height'], $this );
}
return $value;
}
/**
* Returns the tax class.
*
* Does not use get_prop so it can handle 'parent' inheritance correctly.
*
* @param string $context view, edit, or unfiltered.
* @return string
*/
public function get_tax_class( $context = 'view' ) {
$value = null;
if ( array_key_exists( 'tax_class', $this->data ) ) {
$value = array_key_exists( 'tax_class', $this->changes ) ? $this->changes['tax_class'] : $this->data['tax_class'];
if ( 'edit' !== $context && 'parent' === $value ) {
$value = $this->parent_data['tax_class'];
}
if ( 'view' === $context ) {
$value = apply_filters( $this->get_hook_prefix() . 'tax_class', $value, $this );
}
}
return $value;
}
/**
* Return if product manage stock.
*
* @since 3.0.0
* @param string $context What the value is for. Valid values are view and edit.
* @return boolean|string true, false, or parent.
*/
public function get_manage_stock( $context = 'view' ) {
$value = $this->get_prop( 'manage_stock', $context );
// Inherit value from parent.
if ( 'view' === $context && false === $value && true === wc_string_to_bool( $this->parent_data['manage_stock'] ) ) {
$value = 'parent';
}
return $value;
}
/**
* Returns number of items available for sale.
*
* @param string $context What the value is for. Valid values are view and edit.
* @return int|null
*/
public function get_stock_quantity( $context = 'view' ) {
$value = $this->get_prop( 'stock_quantity', $context );
// Inherit value from parent.
if ( 'view' === $context && 'parent' === $this->get_manage_stock() ) {
$value = apply_filters( $this->get_hook_prefix() . 'stock_quantity', $this->parent_data['stock_quantity'], $this );
}
return $value;
}
/**
* Get backorders.
*
* @param string $context What the value is for. Valid values are view and edit.
* @since 3.0.0
* @return string yes no or notify
*/
public function get_backorders( $context = 'view' ) {
$value = $this->get_prop( 'backorders', $context );
// Inherit value from parent.
if ( 'view' === $context && 'parent' === $this->get_manage_stock() ) {
$value = apply_filters( $this->get_hook_prefix() . 'backorders', $this->parent_data['backorders'], $this );
}
return $value;
}
/**
* Get main image ID.
*
* @since 3.0.0
* @param string $context What the value is for. Valid values are view and edit.
* @return string
*/
public function get_image_id( $context = 'view' ) {
$image_id = $this->get_prop( 'image_id', $context );
if ( 'view' === $context && ! $image_id ) {
$image_id = apply_filters( $this->get_hook_prefix() . 'image_id', $this->parent_data['image_id'], $this );
}
return $image_id;
}
/**
* Get purchase note.
*
* @since 3.0.0
* @param string $context What the value is for. Valid values are view and edit.
* @return string
*/
public function get_purchase_note( $context = 'view' ) {
$value = $this->get_prop( 'purchase_note', $context );
// Inherit value from parent.
if ( 'view' === $context && empty( $value ) ) {
$value = apply_filters( $this->get_hook_prefix() . 'purchase_note', $this->parent_data['purchase_note'], $this );
}
return $value;
}
/**
* Get shipping class ID.
*
* @since 3.0.0
* @param string $context What the value is for. Valid values are view and edit.
* @return int
*/
public function get_shipping_class_id( $context = 'view' ) {
$shipping_class_id = $this->get_prop( 'shipping_class_id', $context );
if ( 'view' === $context && ! $shipping_class_id ) {
$shipping_class_id = apply_filters( $this->get_hook_prefix() . 'shipping_class_id', $this->parent_data['shipping_class_id'], $this );
}
return $shipping_class_id;
}
/**
* Get catalog visibility.
*
* @param string $context What the value is for. Valid values are view and edit.
* @return string
*/
public function get_catalog_visibility( $context = 'view' ) {
return apply_filters( $this->get_hook_prefix() . 'catalog_visibility', $this->parent_data['catalog_visibility'], $this );
}
/**
* Get attribute summary.
*
* By default, attribute summary contains comma-delimited 'attribute_name: attribute_value' pairs for all attributes.
*
* @param string $context What the value is for. Valid values are view and edit.
*
* @since 3.6.0
* @return string
*/
public function get_attribute_summary( $context = 'view' ) {
return $this->get_prop( 'attribute_summary', $context );
}
/**
* Set attribute summary.
*
* By default, attribute summary contains comma-delimited 'attribute_name: attribute_value' pairs for all attributes.
*
* @since 3.6.0
* @param string $attribute_summary Summary of attribute names and values assigned to the variation.
*/
public function set_attribute_summary( $attribute_summary ) {
$this->set_prop( 'attribute_summary', $attribute_summary );
}
/*
|--------------------------------------------------------------------------
| CRUD methods
|--------------------------------------------------------------------------
*/
/**
* Set the parent data array for this variation.
*
* @since 3.0.0
* @param array $parent_data parent data array for this variation.
*/
public function set_parent_data( $parent_data ) {
$parent_data = wp_parse_args(
$parent_data,
array(
'title' => '',
'status' => '',
'sku' => '',
'manage_stock' => 'no',
'backorders' => 'no',
'stock_quantity' => '',
'weight' => '',
'length' => '',
'width' => '',
'height' => '',
'tax_class' => '',
'shipping_class_id' => 0,
'image_id' => 0,
'purchase_note' => '',
'catalog_visibility' => 'visible',
)
);
// Normalize tax class.
$parent_data['tax_class'] = sanitize_title( $parent_data['tax_class'] );
$parent_data['tax_class'] = 'standard' === $parent_data['tax_class'] ? '' : $parent_data['tax_class'];
$valid_classes = $this->get_valid_tax_classes();
if ( ! in_array( $parent_data['tax_class'], $valid_classes, true ) ) {
$parent_data['tax_class'] = '';
}
$this->parent_data = $parent_data;
}
/**
* Get the parent data array for this variation.
*
* @since 3.0.0
* @return array
*/
public function get_parent_data() {
return $this->parent_data;
}
/**
* Set attributes. Unlike the parent product which uses terms, variations are assigned
* specific attributes using name value pairs.
*
* @param array $raw_attributes array of raw attributes.
*/
public function set_attributes( $raw_attributes ) {
$raw_attributes = (array) $raw_attributes;
$attributes = array();
foreach ( $raw_attributes as $key => $value ) {
// Remove attribute prefix which meta gets stored with.
if ( 0 === strpos( $key, 'attribute_' ) ) {
$key = substr( $key, 10 );
}
$attributes[ $key ] = $value;
}
$this->set_prop( 'attributes', $attributes );
}
/**
* Returns whether or not the product has any visible attributes.
*
* Variations are mapped to specific attributes unlike products, and the return
* value of ->get_attributes differs. Therefore this returns false.
*
* @return boolean
*/
public function has_attributes() {
return false;
}
/*
|--------------------------------------------------------------------------
| Conditionals
|--------------------------------------------------------------------------
*/
/**
* Returns false if the product cannot be bought.
* Override abstract method so that: i) Disabled variations are not be purchasable by admins. ii) Enabled variations are not purchasable if the parent product is not purchasable.
*
* @return bool
*/
public function is_purchasable() {
return apply_filters( 'woocommerce_variation_is_purchasable', $this->variation_is_visible() && parent::is_purchasable() && ( 'publish' === $this->parent_data['status'] || current_user_can( 'edit_post', $this->get_parent_id() ) ), $this );
}
/**
* Controls whether this particular variation will appear greyed-out (inactive) or not (active).
* Used by extensions to make incompatible variations appear greyed-out, etc.
* Other possible uses: prevent out-of-stock variations from being selected.
*
* @return bool
*/
public function variation_is_active() {
return apply_filters( 'woocommerce_variation_is_active', true, $this );
}
/**
* Checks if this particular variation is visible. Invisible variations are enabled and can be selected, but no price / stock info is displayed.
* Instead, a suitable 'unavailable' message is displayed.
* Invisible by default: Disabled variations and variations with an empty price.
*
* @return bool
*/
public function variation_is_visible() {
return apply_filters( 'woocommerce_variation_is_visible', 'publish' === get_post_status( $this->get_id() ) && '' !== $this->get_price(), $this->get_id(), $this->get_parent_id(), $this );
}
/**
* Return valid tax classes. Adds 'parent' to the default list of valid tax classes.
*
* @return array valid tax classes
*/
protected function get_valid_tax_classes() {
$valid_classes = WC_Tax::get_tax_class_slugs();
$valid_classes[] = 'parent';
return $valid_classes;
}
}