For performance reasons the query is split in two: one for simple
products and variations with a concrete attribute value, and another
one for variations having "Any..." as the attribute value.
Previously, we were using the `$formatted_meta_data` to build the final array.
However, this does not consider the fact that
`WC_Order_Item->get_formatted_meta_data` can exclude `meta_data` from the
result. There would be less `meta_data` objects return than the previous
implementation.
This fixes the issue by using the `$data['meta_data']` value as the main list of
meta data and only using `$formatted_meta_data` to optionally apply the
`display_key` and `display_value` properties.
The new query doesn't need empty attribute entries in the meta table,
therefore the code that generates them and the migration to backfill
the missing existing ones have been removed.
When set_attributes is used on WC_Product to remove existing attributes
the wc_product_attribute_uasort_comparison ends up being called
with a null argument, and this breaks tests in PHP 7.4 since
null is used as an array. This commit modifies the function so that
if null is passed no array access is attempted.
Right now the filter by attributes widget counts available variations
(for variation products). This is confusing since the counter shows
numbers that are higher than the actual count of products displayed.
This commit changes the query used by the widget so that instead
of counting variations it returns the parent product ids, and then
counts the distinct values. This also covers the case of products
where some of the variations have concrete values and some have
"Any..." values.
When "Create variations from all attributes" is used to create
variations it generates term relationship entries for all the generated
variations, however that doesn't happen when the term can be interpreted
as a numeric value. This is because in that case product->get_attributes
returns the attribute values as numbers, but the code that generates
the term relationships expect those to always be strings.
When manually adding a given variation this doesn't happen.
The fix is to simply strval-ize the value before using it, but it might
be worth investigating why this is happening.
The previous commit fixes a bug that causes the "attribute_" metadata
with an empty value to not be created when a new variation attribute
is added to the product (so that all variations have the attribute
with a value of "Any..."). This commit adds a data migration to
backfill the missing metadata for existing variations.
Christopher Allford
Jonathan Sadowski
jonathansadowski
Nestor Soriano
Shiki
pjv
GREYS
KoolPal
Julià Mestieri
Kevin Hagerty
Claudio Sanches
Ron Rennick
Kathy Daring
Laurence Bahiirwa