emit_pre_migrate_signal

Emit the pre_migrate signal for every application.

def emit_pre_migrate_signal(
    verbosity: int,
    interactive: boolean,
    db: string,
    **kwargs: dict
) - > null

Emit the pre_migrate signal for every application.

Parameters

Name	Type	Description
verbosity	int	The level of detail for output messages, where a value of 2 or higher triggers logging of handler execution.
interactive	boolean	A flag indicating whether the handlers are allowed to prompt the user for input during the migration process.
db	string	The database alias for which the pre-migrate signal is being triggered.
**kwargs	dict	Additional keyword arguments passed to the signal handlers, such as 'stdout' for custom output streams.

Returns

Type	Description
null	Nothing is returned; the function performs side effects by sending signals to registered handlers.