Following attributes are availible for columns
name args description

»» Basic attributes
primary bool true Defines column as a primary key column.
autoincrement bool true Defines column as autoincremented column. If the underlying database doesn't support autoincrementation natively its emulated with triggers and sequence tables.
default mixed default Sets default as an application level default value for a column. When default value has been set for a column every time a record is created the specified column has the default as its value.
zerofill boolean zerofill Defines column as zerofilled column. Only supported by some drivers.
unsigned boolean true Defines column with integer type as unsigned. Only supported by some drivers.
fixed boolean true Defines string typed column as fixed length.
enum array enum Sets enum as an application level enum value list for a column.
»» Basic validators
unique bool true Acts as database level unique constraint. Also validates that the specified column is unique.
nospace bool true Nospace validator. This validator validates that specified column doesn't contain any space/newline characters.
notblank bool true Notblank validator. This validator validates that specified column doesn't contain only space/newline characters. Useful in for example comment posting applications where users are not allowed to post empty comments.
notnull bool true Acts as database level notnull constraint as well as notnull validator for the specified column.
»» Advanced validators
email bool true Email validator. Validates that specified column is a valid email address.
date bool true Date validator.
range array(min, max) Range validator. Validates that the column is between min and max.
country bool true Country code validator validates that specified column has a valid country code.
regexp string regexp Regular expression validator validates that specified column matches regexp.
ip bool true Ip validator validates that specified column is a valid internet protocol address.
usstate bool true Usstate validator validates that specified column is a valid usstate.