[SOLUCIONADO] Importar modelo en settings.py

[kojicomics]

Hola a todos

Estoy tratando de importar un modelo en el "settings.py" para guardar el valor de un queryset en una variable, pero me lanza varios errores que no consigo identificar con el import

Mi import es el siguiente:

Código Python:

from apps.languages.models import Language
 

Y ésta es la salida del error:

Código:

Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/core/management/__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/core/management/__init__.py", line 238, in fetch_command
    klass = load_command_class(app_name, subcommand)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/core/management/__init__.py", line 41, in load_command_class
    module = import_module('%s.management.commands.%s' % (app_name, name))
  File "/home/user/myapp/virtualenv/project/lib/python3.4/importlib/__init__.py", line 109, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1129, in _exec
  File "<frozen importlib._bootstrap>", line 1471, in exec_module
  File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/core/management/commands/runserver.py", line 14, in <module>
    from django.db.migrations.executor import MigrationExecutor
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/db/migrations/executor.py", line 5, in <module>
    from .loader import MigrationLoader
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/db/migrations/loader.py", line 8, in <module>
    from django.db.migrations.recorder import MigrationRecorder
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/db/migrations/recorder.py", line 9, in <module>
    class MigrationRecorder(object):
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/db/migrations/recorder.py", line 23, in MigrationRecorder
    class Migration(models.Model):
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/db/migrations/recorder.py", line 24, in Migration
    app = models.CharField(max_length=255)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/db/models/fields/__init__.py", line 1012, in __init__
    super(CharField, self).__init__(*args, **kwargs)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/db/models/fields/__init__.py", line 146, in __init__
    self.db_tablespace = db_tablespace or settings.DEFAULT_INDEX_TABLESPACE
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/conf/__init__.py", line 46, in __getattr__
    self._setup(name)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/conf/__init__.py", line 42, in _setup
    self._wrapped = Settings(settings_module)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/conf/__init__.py", line 94, in __init__
    mod = importlib.import_module(self.SETTINGS_MODULE)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/importlib/__init__.py", line 109, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/home/user/myapp/project/project/settings/local.py", line 3, in <module>
    from .base import *
  File "/home/user/myapp/project/project/settings/base.py", line 17, in <module>
    from apps.languages.models import Language
  File "/home/user/myapp/project/apps/languages/models.py", line 6, in <module>
    class Language(models.Model):
  File "/home/user/myapp/project/apps/languages/models.py", line 7, in Language
    title = models.CharField(max_length=25)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/db/models/fields/__init__.py", line 1012, in __init__
    super(CharField, self).__init__(*args, **kwargs)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/db/models/fields/__init__.py", line 146, in __init__
    self.db_tablespace = db_tablespace or settings.DEFAULT_INDEX_TABLESPACE
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/conf/__init__.py", line 46, in __getattr__
    self._setup(name)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/conf/__init__.py", line 42, in _setup
    self._wrapped = Settings(settings_module)
  File "/home/user/myapp/virtualenv/project/lib/python3.4/site-packages/django/conf/__init__.py", line 115, in __init__
    raise ImproperlyConfigured("The SECRET_KEY setting must not be empty.")
django.core.exceptions.ImproperlyConfigured: The SECRET_KEY setting must not be empty.

Un saludo

[razpeitia]

Tu error

Código:

django.core.exceptions.ImproperlyConfigured: The SECRET_KEY setting must not be empty.

Tienes tu SECRET_KEY vacía, no la haz configurado correctamente.

[kojicomics]

La SECRET_KEY no está vacía, tiene el valor que le asigna Django por defecto al crear el projecto

Si elimino el import del modelo, el servidor arranca correctamente

[kojicomics]

He encontrado una solución pero no sé si es la más óptima

He estado buscando información, y por lo que pude entender, el settings.py primero obtiene de INSTALLED_APPS las aplicaciones que debe instalar, por lo que al importar una aplicación en él se produce una dependencia circular dando lugar a errores al gestionar el resto de acciones (en mi caso no encontraba la SECRET_KEY)

Yo no estoy trabajando con un settings.py monolítico, sino que tengo 3 ficheros: base.py local.py y production.py

Tanto en local.py como en production.py el import se produce correctamente, por lo tanto, lo que hice fue crear un nuevo fichero que realizase el trabajo que necesitaba (obtener los valores de la variable LANGUAGES de un modelo dinámicamente):

Código Python:

from apps.languages.models import Language
 
import django
 
django.setup()
 
LANGUAGES = tuple(Language.objects.all().values_list('locale', 'name'))
 

Y por último importo el módulo en local.py y production.py y ya funciona correctamente:

Código Python:

from .languages import *
 

Un saludo