FieldDoesNotExist на погрузочной Крепеж

Question

Я пытаюсь загрузить приспособление под названием initial_data.json:

[{"pk": 1, "model": "contenttypes.contenttype", "fields": {"model": "logentry", "name": "log entry", "app_label": "admin"}}, {"pk": 2, "model": "contenttypes.contenttype", "fields": {"model": "permission", "name": "permission", "app_label": "auth"}}, {"pk": 3, "model": "contenttypes.contenttype", "fields": {"model": "group", "name": "group", "app_label": "auth"}}, {"pk": 4, "model": "contenttypes.contenttype", "fields": {"model": "user", "name": "user", "app_label": "auth"}}, {"pk": 5, "model": "contenttypes.contenttype", "fields": {"model": "contenttype", "name": "content type", "app_label": "contenttypes"}}, {"pk": 6, "model": "contenttypes.contenttype", "fields": {"model": "session", "name": "session", "app_label": "sessions"}}, {"pk": 7, "model": "contenttypes.contenttype", "fields": {"model": "tweet", "name": "tweet", "app_label": "tweeter"}}, {"pk": "2pwa7lb5legwb02jw2h76f1e70j2jmo7", "model": "sessions.session", "fields": {"expire_date": "2014-09-14T00:20:41.773Z", "session_data": "OWQ4MmE3ZGRkZjliOWY3OTQ5OTdiMDIyYjE5ZWMwNmUwZTAyMThhMjp7Il9hdXRoX3VzZXJfYmFja2VuZCI6ImRqYW5nby5jb250cmliLmF1dGguYmFja2VuZHMuTW9kZWxCYWNrZW5kIiwiX2F1dGhfdXNlcl9pZCI6MX0="}}, {"pk": "ncl522f8kc6bf242chahmc2squtioirb", "model": "sessions.session", "fields": {"expire_date": "2014-09-14T01:19:42.407Z", "session_data": "NjY0NjliYjNkNDk0ODJhYWRjMDk5MjNjODA1NTAxYWIzZjg3ZGFkYzp7fQ=="}}, {"pk": 1, "model": "auth.permission", "fields": {"codename": "add_logentry", "name": "Can add log entry", "content_type": 1}}, {"pk": 2, "model": "auth.permission", "fields": {"codename": "change_logentry", "name": "Can change log entry", "content_type": 1}}, {"pk": 3, "model": "auth.permission", "fields": {"codename": "delete_logentry", "name": "Can delete log entry", "content_type": 1}}, {"pk": 4, "model": "auth.permission", "fields": {"codename": "add_permission", "name": "Can add permission", "content_type": 2}}, {"pk": 5, "model": "auth.permission", "fields": {"codename": "change_permission", "name": "Can change permission", "content_type": 2}}, {"pk": 6, "model": "auth.permission", "fields": {"codename": "delete_permission", "name": "Can delete permission", "content_type": 2}}, {"pk": 7, "model": "auth.permission", "fields": {"codename": "add_group", "name": "Can add group", "content_type": 3}}, {"pk": 8, "model": "auth.permission", "fields": {"codename": "change_group", "name": "Can change group", "content_type": 3}}, {"pk": 9, "model": "auth.permission", "fields": {"codename": "delete_group", "name": "Can delete group", "content_type": 3}}, {"pk": 10, "model": "auth.permission", "fields": {"codename": "add_user", "name": "Can add user", "content_type": 4}}, {"pk": 11, "model": "auth.permission", "fields": {"codename": "change_user", "name": "Can change user", "content_type": 4}}, {"pk": 12, "model": "auth.permission", "fields": {"codename": "delete_user", "name": "Can delete user", "content_type": 4}}, {"pk": 13, "model": "auth.permission", "fields": {"codename": "add_contenttype", "name": "Can add content type", "content_type": 5}}, {"pk": 14, "model": "auth.permission", "fields": {"codename": "change_contenttype", "name": "Can change content type", "content_type": 5}}, {"pk": 15, "model": "auth.permission", "fields": {"codename": "delete_contenttype", "name": "Can delete content type", "content_type": 5}}, {"pk": 16, "model": "auth.permission", "fields": {"codename": "add_session", "name": "Can add session", "content_type": 6}}, {"pk": 17, "model": "auth.permission", "fields": {"codename": "change_session", "name": "Can change session", "content_type": 6}}, {"pk": 18, "model": "auth.permission", "fields": {"codename": "delete_session", "name": "Can delete session", "content_type": 6}}, {"pk": 19, "model": "auth.permission", "fields": {"codename": "add_tweet", "name": "Can add tweet", "content_type": 7}}, {"pk": 20, "model": "auth.permission", "fields": {"codename": "change_tweet", "name": "Can change tweet", "content_type": 7}}, {"pk": 21, "model": "auth.permission", "fields": {"codename": "delete_tweet", "name": "Can delete tweet", "content_type": 7}}, {"pk": 1, "model": "auth.user", "fields": {"username": "nina", "first_name": "", "last_name": "", "is_active": true, "is_superuser": true, "is_staff": true, "last_login": "2014-08-31T00:20:41.771Z", "groups": [], "user_permissions": [], "password": "pbkdf2_sha256$12000$2LSBfxYO9fJJ$UT/BLyRLwBQIOUtOfA2aKkGw+xe44ZNYD2TWXqXoT3E=", "email": "", "date_joined": "2014-08-30T18:10:53.539Z"}}, {"pk": 2, "model": "auth.user", "fields": {"username": "admin", "first_name": "Admin", "last_name": "", "is_active": true, "is_superuser": true, "is_staff": true, "last_login": "2014-08-31T00:22:38Z", "groups": [], "user_permissions": [], "password": "pbkdf2_sha256$12000$6JY3bvlplRf0$Rm6rcK9M3LNuTw1uZ3B/Je7rq420UCaf2iwmY8pIv2U=", "email": "admin@admin.com", "date_joined": "2014-08-31T00:22:38Z"}}, {"pk": 3, "model": "auth.user", "fields": {"username": "bob", "first_name": "Bob", "last_name": "Bobman", "is_active": true, "is_superuser": false, "is_staff": false, "last_login": "2014-08-31T00:23:06Z", "groups": [], "user_permissions": [], "password": "pbkdf2_sha256$12000$ehuPT7BoKVpF$VZTxDeaHtLG7jU4wQ1erlFciwMk7l8aCp9MIjSVa/NU=", "email": "bob@bob.com", "date_joined": "2014-08-31T00:23:06Z"}}, {"pk": 4, "model": "auth.user", "fields": {"username": "amy", "first_name": "Amy", "last_name": "Smith", "is_active": true, "is_superuser": false, "is_staff": false, "last_login": "2014-08-31T00:23:24Z", "groups": [], "user_permissions": [], "password": "pbkdf2_sha256$12000$Tv4vWeWICkfS$qcMP+xddceQZMVjHbdOhOsV6LKOQntKOkiaqdEzS2p8=", "email": "amy@smith.com", "date_joined": "2014-08-31T00:23:24Z"}}, {"pk": 1, "model": "tweeter.tweet", "fields": {"text": "I'm an Admin! ", "user": 2, "timestamp": "2014-08-30T18:51:04Z"}}, {"pk": 2, "model": "tweeter.tweet", "fields": {"text": "Bob is the coolest name EVAR", "user": 3, "timestamp": "2014-08-29T18:51:19Z"}}, {"pk": 3, "model": "tweeter.tweet", "fields": {"text": "I <3 Tweeter", "user": 4, "timestamp": "2014-08-30T15:52:09Z"}}, {"pk": 1, "model": "admin.logentry", "fields": {"action_flag": 1, "action_time": "2014-08-31T00:22:38.417Z", "object_repr": "Admin", "object_id": "2", "change_message": "", "user": 1, "content_type": 4}}, {"pk": 2, "model": "admin.logentry", "fields": {"action_flag": 2, "action_time": "2014-08-31T00:22:57.048Z", "object_repr": "Admin", "object_id": "2", "change_message": "Changed first_name, email, is_staff and is_superuser.", "user": 1, "content_type": 4}}, {"pk": 3, "model": "admin.logentry", "fields": {"action_flag": 1, "action_time": "2014-08-31T00:23:06.858Z", "object_repr": "Bob", "object_id": "3", "change_message": "", "user": 1, "content_type": 4}}, {"pk": 4, "model": "admin.logentry", "fields": {"action_flag": 2, "action_time": "2014-08-31T00:23:17.098Z", "object_repr": "Bob", "object_id": "3", "change_message": "Changed first_name, last_name and email.", "user": 1, "content_type": 4}}, {"pk": 5, "model": "admin.logentry", "fields": {"action_flag": 1, "action_time": "2014-08-31T00:23:24.481Z", "object_repr": "Amy", "object_id": "4", "change_message": "", "user": 1, "content_type": 4}}, {"pk": 6, "model": "admin.logentry", "fields": {"action_flag": 2, "action_time": "2014-08-31T00:23:35.860Z", "object_repr": "Amy", "object_id": "4", "change_message": "Changed first_name, last_name and email.", "user": 1, "content_type": 4}}, {"pk": 7, "model": "admin.logentry", "fields": {"action_flag": 1, "action_time": "2014-08-31T00:51:05.451Z", "object_repr": "I'm an Admin! ", "object_id": "1", "change_message": "", "user": 1, "content_type": 7}}, {"pk": 8, "model": "admin.logentry", "fields": {"action_flag": 1, "action_time": "2014-08-31T00:51:26.097Z", "object_repr": "Bob is the coolest name EVAR", "object_id": "2", "change_message": "", "user": 1, "content_type": 7}}, {"pk": 9, "model": "admin.logentry", "fields": {"action_flag": 1, "action_time": "2014-08-31T00:52:12.916Z", "object_repr": "I <3 Tweeter", "object_id": "3", "change_message": "", "user": 1, "content_type": 7}}, {"pk": 10, "model": "admin.logentry", "fields": {"action_flag": 2, "action_time": "2014-08-31T01:06:18.846Z", "object_repr": "admin", "object_id": "2", "change_message": "Changed username.", "user": 1, "content_type": 4}}, {"pk": 11, "model": "admin.logentry", "fields": {"action_flag": 2, "action_time": "2014-08-31T01:06:26.076Z", "object_repr": "bob", "object_id": "3", "change_message": "Changed username.", "user": 1, "content_type": 4}}, {"pk": 12, "model": "admin.logentry", "fields": {"action_flag": 2, "action_time": "2014-08-31T01:06:34.096Z", "object_repr": "amy", "object_id": "4", "change_message": "Changed username.", "user": 1, "content_type": 4}}] 

Но я получаю следующее сообщение об ошибке, когда я бегу syncdb или с помощью load data:

Traceback (most recent call last): 
    File "manage.py", line 10, in <module> 
    execute_from_command_line(sys.argv) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 338, in execute_from_command_line 
    utility.execute() 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 330, in execute 
    self.fetch_command(subcommand).run_from_argv(self.argv) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/base.py", line 393, in run_from_argv 
    self.execute(*args, **cmd_options) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/base.py", line 444, in execute 
    output = self.handle(*args, **options) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/commands/syncdb.py", line 25, in handle 
    call_command("migrate", **options) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 120, in call_command 
    return command.execute(*args, **defaults) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/base.py", line 444, in execute 
    output = self.handle(*args, **options) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 179, in handle 
    created_models = self.sync_apps(connection, executor.loader.unmigrated_apps) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 364, in sync_apps 
    hide_empty=True, 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/__init__.py", line 120, in call_command 
    return command.execute(*args, **defaults) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/base.py", line 444, in execute 
    output = self.handle(*args, **options) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/commands/loaddata.py", line 60, in handle 
    self.loaddata(fixture_labels) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/commands/loaddata.py", line 90, in loaddata 
    self.load_label(fixture_label) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/management/commands/loaddata.py", line 141, in load_label 
    for obj in objects: 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/serializers/json.py", line 84, in Deserializer 
    six.reraise(DeserializationError, DeserializationError(e), sys.exc_info()[2]) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/serializers/json.py", line 78, in Deserializer 
    for obj in PythonDeserializer(objects, **options): 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/core/serializers/python.py", line 120, in Deserializer 
    field = Model._meta.get_field(field_name) 
    File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/django/db/models/options.py", line 554, in get_field 
    raise FieldDoesNotExist('%s has no field named %r' % (self.object_name, field_name)) 
django.core.serializers.base.DeserializationError: Problem installing fixture '/Users/wrb473/Documents/workspace/angulardjango/tweeter/fixtures/initial_data.json': ContentType has no field named u'name' 

Где проблема с прибором?

Answer 1

На этой странице: https://docs.djangoproject.com/en/1.8/ref/contrib/contenttypes/#django.contrib.contenttypes.models.ContentType

"Изменено в Django 1.8: Перед Django 1.8, свойство имя было реальное поле на модели ContentType." - подразумевает, что с 1,8 это не реальное поле. Вы используете 1.8? И если вы удалите имя из своих инструментов ContentType, это сработает?

Answer 2

Это потому, что ContentType.name является собственностью, а не Field.

Отрывок из определения ContentType модели:

class ContentType(models.Model): 
    app_label = models.CharField(max_length=100) 
    model = models.CharField(_('python model class name'), max_length=100) 
    objects = ContentTypeManager() 

    # ... 

    @property 
    def name(self): 
    # ... 

Единственные поля, определенные на этой модели app_label и model. Это означает, что код, который сериализовал ваши объекты, также включает свойство, значение которого не может быть установлено при десериализации.

Вы можете попробовать удалить все, что не является моделью Field (в вашем случае это только name) из данных о сериализации.