处理多个对象时出现意外的关键字参数

Question

I'm trying to work with severals objects to achieve an action.

My models.py

 class LogBook(models.Model):
    name = models.CharField()
    
class LogMessage(models.Model):
    logbook = models.ForeignKey(LogBook, on_delete=models.CASCADE)

class LogDone(models.Model):
    logmessage = models.ForeignKey(LogMessage)
    done_status = models.BooleanField(default=False)

My view:

def logmessage_done(request, logmessage_id, log_id, token ):
    log = get_object_or_404(LogBook, pk=log_id)
    logmessages = LogMessage.objects.filter(logbook=log)
    logdone = LogDone.objects.get_or_create(logmessage=logmessages)
    logdone.done_status = True
    logdone.update()

My url:

"done/<int:logmessage_id>/<int:log_id>/<str:token>"

What I want to achieve:

I want to change the status of the logdone object which is link to the logmessage object but I am not sure I have access object correctly.

What error I have:

The QuerySet value for an exact lookup must be limited to one result using slicing.

Answer 1

Change your view like this:

def logmessage_done(request, logmessage_id, log_id, token ):
    log = get_object_or_404(LogBook, pk=log_id)
    logmessages = LogMessage.objects.filter(logbook=log)
    for log_message in logmessages:
       LogDone.objects.update_or_create(logmessage=log_message,defaults={"done_status": True})
   

Here, log returns a single object with id. logmessages returns a queryset with logbook = the log returned in first query. Have to use update_or_create method