change_column_default(table_name, column_name, default) public

Sets a new default value for a column. If you want to set the default value to NULL, you are out of luck. You need to DatabaseStatements#execute the apppropriate SQL statement yourself.

Examples
 change_column_default(:suppliers, :qualification, 'new')
 change_column_default(:accounts, :authorized, 1)
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October 10, 2008
3 thanks

Implemented in database adapters

These methods are not implemented in the abstract classes. Instead, all database adapters implement these separately, if the feature is supported.

October 10, 2008 - (v2.1.0)
0 thanks

Not implented yet

According to this method’s source, change_column_default is not implemented as well as change_column