Ability to add/customise columns on the Add line item table

[nfourtythree]

What are you trying to do?
Ability to customise/add the columns that are shown when adding a line item to an order on the order edit page.

Notes

• Has to work with custom purchasables.
• Potentially a "custom info" column that purchasables can additionally specify and let developers hook into it for variants.

[nfourtythree]

We have just pushed an update to this that goes a little way to resolving this feature request. This will be included in the next release of Commerce

Snapshot data for a purchasable is now being shown in the toggleable detail row, this is shown/hidden by clicking on the "i" icon.

Developers have the opportunity to edit the data that is shown here for variants. There are a number of events that are triggered during the generation of a variant's snapshot data. These are:

• Variant::EVENT_BEFORE_CAPTURE_PRODUCT_SNAPSHOT
• Variant::EVENT_AFTER_CAPTURE_PRODUCT_SNAPSHOT
• Variant::EVENT_BEFORE_CAPTURE_VARIANT_SNAPSHOT
• Variant::EVENT_AFTER_CAPTURE_VARIANT_SNAPSHOT

These can be seen in use in the following code: https://github.com/craftcms/commerce/blob/develop/src/elements/Variant.php#L571-L669