Null-valued and missing attributes are passed up to the action as an empty string. The action attempts to match the attribute by key and value. If the attribute does not exist for that card, the key match fails; if the value is null, empty string doesn't match.
We need a comprehensive system for handling null values and absent keys.
Null-valued and missing attributes are passed up to the action as an empty string. The action attempts to match the attribute by key and value. If the attribute does not exist for that card, the key match fails; if the value is null, empty string doesn't match.
We need a comprehensive system for handling null values and absent keys.