Filters
There are multiple levels at which a filter may exclude a data row
from being used to fill a result:
-
Prior to entering a template: use a
@before or a
@join function as described below.
-
For a given set of computed input keys: a user-supplied input key
function should return an empty array to ignore a data row for the
current input, as described in the
conversion syntax section
for () and
[]. Keys that match an
@ignore value, as described below,
will also be skipped.
-
For a given set of computed inputs: described in the
@ignore examples below.