Jifty::DBI::Column - Encapsulates a single column in a Jifty::DBI::Record table

This class encapsulates a single column in a Jifty::DBI::Record table description. It replaces the _accessible method in Jifty::DBI::Record.

It has the following accessors: name type default validator boolean refers_to readable writable length.

Returns true if the column is of some numeric type, otherwise returns false.

Returns true if this column is a text field

Returns true if this column is a boolean

Returns a hash describing this column object with enough detail to fully describe it in the database. Intentionally skips record_class, all column attributes starting with _, and all column attributes which are undefined. The "known" attributes in the attributes hash are flattened and returned as well. The list of known attributes are:

container

label hints render_as

display_length

valid_values

available_values

autocompleted

documentation

no_placeholder

Setting this to a true value causes load_by_cols in Jifty::DBI::record to not use a placeholder when loading the column. This can allow the database to come up with better query plans in some cases.

Returns a hash describing this column object with enough detail to fully describe it in the database. Intentionally skips record_class, all column attributes starting with _, and all column attributes which are undefined.

Gets/sets the validator coderef for the column.

DEPRECATED. Use $column->readable instead.

DEPRECATED. Use $column->writable instead.

DEPRECATED. Use $column->max_length instead.

DEPRECATED. Use $column->till instead.

Returns the a true value if the column method exists for the current application version. The current application version is determined by checking the schema_version in Jifty::DBI::Record of the column's record_class. This method returns a false value if the column is not yet been added or has been dropped.

This method returns a false value under these circumstances:

• Both the since trait and schema_version method are defined and schema_version is less than the version set on since.
• Both the till trait and schema_version method are defined and schema_version is greater than or equal to the version set on till.

Otherwise, this method returns true.