Question

Django: How to use get() method in model

models.py

class WorkDailyRecord(models.Model):
    user = models.ForeignKey(User)
    date = models.DateTimeField(auto_now_add=True)
    contents = models.TextField()
    check_user = models.ManyToManyField(
                User,
                related_name='checked_user_record_set',
            )
    target_user = models.ManyToManyField(
                User,
                related_name='target_user_record_set',
            )

    ONGOING_OR_END =(
                ('ing', 'ing'),
                ('end', 'end'),
            )


    ongoing_or_end = models.CharField(
                max_length=3,
                choices=ONGOING_OR_END,
                default='ing',
            )

>>>WorkDailyRecord.objects.get(ongoing_or_end='ing')
Traceback (most recent call last):
  File "", line 1, in 
  File "/usr/lib/python2.7/site-packages/django/db/models/manager.py", line 131, in get
    return self.get_query_set().get(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/django/db/models/query.py", line 368, in get
    % (self.model._meta.object_name, num, kwargs))
MultipleObjectsReturned: get() returned more than one WorkDailyRecord -- it returned 12! Lookup parameters were {'ongoing_or_end': 'ing'}

I want to get only ‘ing’ data…

What should I do?

Answer 1

To get a list of objects, use the filter method. get is supposed to return a single object or raise an exception:

WorkDailyRecord.objects.filter(ongoing_or_end='ing')