10.6.11. Class cerebro.events.BeforeEventChangingOfMessage

class cerebro.events.BeforeEventChangingOfMessage(event_type, event_id)

Bases: cerebro.events.BeforeEventMessage

The class for the message editing event. It grants access to the data of the message being modified before writing it into the database.

Methods

• existing_attachments()
• original_message()
• methods of the base class cerebro.events.BeforeEventMessage

The class object is input into the functions before_event and error_event (in case of error) of the module event.

def before_event(event):        
        if event.event_type() == event.EVENT_CHANGING_OF_MESSAGE:
                ...

See also

AfterEventChangingOfMessage.

existing_attachments()

Returns:the list of actual attachments that were added to the message before. Return type:list(cerebro.aclasses.AbstractAttachment,)

original_message()

Returns:the message in its previous state (before undergoing current modifications). Return type:cerebro.aclasses.Message

def before_event(event):        
        if event.event_type() == event.EVENT_CHANGING_OF_MESSAGE:
                orig_message = event.original_message()
                
                # Comparing the current (after a message modification) working time value and its original (before the modification) value
                if event.work_time() != orig_message.work_time(): 
                        raise Exception('You can't change the working time!')