Product attributes are currently recorded as terms in
wp_term_relationships (product attributes are actually taxonomies).
In the case of variable products this is true for the main product,
but not for the variations. The attributes used to define variations
are stored as post meta, but nothing is recorded in the term
relationships table.
This is a problem when using the layered nav filtering plugin,
since the attribute counters displayed are calculated based solely
on the contents of the term relationships table. Adding meta queries
would be really messy (especially when the widget is configured
with AND operator) and would probably also hurt performance.
This commit adds a change to store the attributes for variations
as term relationships, additionally to storing them as post meta.
Terms are stored on variation creation, and updated/deleted together
with the variation as appropriate. "Any" variations (stored in meta
as empty values) are not stored as terms.
Additionally, a database upgrade is included in order to backfill
terms for already existing products.
When searched in a case sensitive manner, the conversion to lowercase causes uppercase matches that would have been found to be lost. This change increases the tolerance of the OR search format while also removing this unintended side-effect.
This commits changes WC_Product_Variation to raise an exception when the
class is instantiated with an ID that belongs to a post object that is
not a product variation.
This is necessary to avoid problems like the one described in #24956
where passing a variable product ID to WC_Product_Variation would result
in transparently modifying the variable product title and excerpt.
When displaying a list of images you often want a specific class to be
attached to each image, therefore you pass through a custom class using
the attr parameter. Unfortunately this doesn't get passed through to a
placeholder image should one be needed. This means that, for example, if
you're custom class center an image or something, it won't be honoured
for placeholders, which can lead to some wonky image listings.
You can work around this currently by leverging the
`woocommerce_product_get_image` filter, but it's a bit gnarly as you
need to do some regexing or string splitting or something and checking
class names and what not. This provides a much easier way, by
supporting custom attrs on placeholder images as is the case for non
placehodler images.
This commit fixes all 1533 PHPCS errors that PHPCBF can fix automatically in the tests/ directory. Before this change there was a total of 3106 PHPCS errors in the WooCommerce repository and now there is 1573 errors.
This commit removes unnecessary clean up code form some unit tests. All database changes done during a test are automatically reverted after the test finishes, so it is not necessary to write code to manually remove them. This change simplifies the test code and make it run a bit faster.