어떻게 장고 사용자 지정 사용자 OneToOne 필드를 변경할 수 있습니까?

Question

CustomUser 모델에 OneToOne 관계가 있습니다.

class Channel(models.Model): 
    channel_name = models.CharField(max_length=60, primary_key=True) 
    channel_host = models.CharField(max_length=60) 
    channel_secret = models.CharField(max_length=60) 
    profile_type = models.ForeignKey(Profile) 
    channel_register_time = models.DateField(auto_now_add=True) 
    channel_creator = models.CharField(max_length=60) 

class CustomUser(AbstractUser): 
    channel = models.OneToOneField(Channel, unique=True, db_index=True, primary_key=True) 
    register_time = models.DateField(auto_now_add=True) 
    cellphone = models.CharField(max_length=60) 
    fax = models.CharField(max_length=60) 
    tell = models.CharField(max_length=60) 
    picture = models.ImageField(upload_to='media/', max_length=100) 

내가 모든 것을 괜찮 새 사용자를 만들 때,하지만 난 channl 필드를 변경하려고 할 때이 오류가 : 내 모델이다

In [93]: c1 = Channel.objects.create(channel_name='channel1',profile_type=p) 

In [94]: c2 = Channel.objects.create(channel_name='channel2',profile_type=p) 

In [95]: u = CustomUser.objects.create(username='django',channel=c1) 

In [96]: u.channel = c2 

In [97]: u.save() 
--------------------------------------------------------------------------- 
IntegrityError       Traceback (most recent call last) 
<ipython-input-97-5d13c143bca2> in <module>() 
----> 1 u.save() 

/usr/lib/python2.7/site-packages/django/db/models/base.pyc in save(self, force_insert, force_update, using, update_fields) 
    543 
    544   self.save_base(using=using, force_insert=force_insert, 
--> 545      force_update=force_update, update_fields=update_fields) 
    546  save.alters_data = True 
    547 

/usr/lib/python2.7/site-packages/django/db/models/base.pyc in save_base(self, raw, force_insert, force_update, using, update_fields) 
    571    if not raw: 
    572     self._save_parents(cls, using, update_fields) 
--> 573    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields) 
    574   # Store the database on which the object was saved 
    575   self._state.db = using 

/usr/lib/python2.7/site-packages/django/db/models/base.pyc in _save_table(self, raw, cls, force_insert, force_update, using, update_fields) 
    652 
    653    update_pk = bool(meta.has_auto_field and not pk_set) 
--> 654    result = self._do_insert(cls._base_manager, using, fields, update_pk, raw) 
    655    if update_pk: 
    656     setattr(self, meta.pk.attname, result) 

/usr/lib/python2.7/site-packages/django/db/models/base.pyc in _do_insert(self, manager, using, fields, update_pk, raw) 
    685   """ 
    686   return manager._insert([self], fields=fields, return_id=update_pk, 
--> 687        using=using, raw=raw) 
    688 
    689  def delete(self, using=None): 

/usr/lib/python2.7/site-packages/django/db/models/manager.pyc in _insert(self, objs, fields, **kwargs) 
    230 
    231  def _insert(self, objs, fields, **kwargs): 
--> 232   return insert_query(self.model, objs, fields, **kwargs) 
    233 
    234  def _update(self, values, **kwargs): 

/usr/lib/python2.7/site-packages/django/db/models/query.pyc in insert_query(model, objs, fields, return_id, raw, using) 
    1509  query = sql.InsertQuery(model) 
    1510  query.insert_values(fields, objs, raw=raw) 
-> 1511  return query.get_compiler(using=using).execute_sql(return_id) 
    1512 
    1513 

/usr/lib/python2.7/site-packages/django/db/models/sql/compiler.pyc in execute_sql(self, return_id) 
    896   cursor = self.connection.cursor() 
    897   for sql, params in self.as_sql(): 
--> 898    cursor.execute(sql, params) 
    899   if not (return_id and cursor): 
    900    return 

/usr/lib/python2.7/site-packages/django/db/backends/util.pyc in execute(self, sql, params) 
    67   start = time() 
    68   try: 
---> 69    return super(CursorDebugWrapper, self).execute(sql, params) 
    70   finally: 
    71    stop = time() 

/usr/lib/python2.7/site-packages/django/db/backends/util.pyc in execute(self, sql, params) 
    51     return self.cursor.execute(sql) 
    52    else: 
---> 53     return self.cursor.execute(sql, params) 
    54 
    55  def executemany(self, sql, param_list): 

/usr/lib/python2.7/site-packages/django/db/utils.pyc in __exit__(self, exc_type, exc_value, traceback) 
    97     if dj_exc_type not in (DataError, IntegrityError): 
    98      self.wrapper.errors_occurred = True 
---> 99     six.reraise(dj_exc_type, dj_exc_value, traceback) 
    100 
    101  def __call__(self, func): 

/usr/lib/python2.7/site-packages/django/db/backends/util.pyc in execute(self, sql, params) 
    51     return self.cursor.execute(sql) 
    52    else: 
---> 53     return self.cursor.execute(sql, params) 
    54 
    55  def executemany(self, sql, param_list): 

/usr/lib/python2.7/site-packages/django/db/backends/sqlite3/base.pyc in execute(self, query, params) 
    448    return Database.Cursor.execute(self, query) 
    449   query = self.convert_query(query) 
--> 450   return Database.Cursor.execute(self, query, params) 
    451 
    452  def executemany(self, query, param_list): 

IntegrityError: column username is not unique 

내가 어떤 일을 놓친 무엇입니까? 내 채널 필드를 변경하려면 어떻게해야합니까?

Answer 1

CustomUser 모델의 channel 필드에 primary_key=True이 있기 때문입니다.

이 당신이 할 때 의미 : 당신이이 새로운 사용자를 생성되어 저장하면 따라서

In [96]: u.channel = c2 

In [97]: u.save() 

이 ... 당신이 u의 기본 키를 변경하지만, 원본과 동일한 사용자 이름 하나, 따라서 IntegrityError.

난 당신이 대신 같은 그것을 할 필요가 있다고 생각 :

u = CustomUser.objects.get(username='django') 
u.delete() 
u.channel = c2 
u.save()