USE
All field keywords beginning with html_form_
are passed directly into the form hash. Thus, they are really defined in form.tt which ships with Gantry.
html_form_default_value
specifies a fall back value to use when no other default can be found. Note that this affects HTML only and has nothing to do with SQL. For SQL defaults, you need to do something in the is
statement or a literal SQL statement.
EXAMPLE
To see an example, build:
bigtop -c example.bigtop all
Change to the newly created Kids directory and look in the form method in lib/Kids/GEN/Child.pm.