Wenn ich meinen Test mit meiner Customer Modell, erhalte ich folgende Fehlermeldung:
DatabaseError: (1146, "Table 'test_mcif2.customer' doesn't exist")Ich bin nicht völlig überrascht, weil ich mein Django-Projekt mit einer "Legacy"-Datenbank verbunden habe. Da meine Tabellen nicht "auf Django-Art" erstellt wurden, ist es nicht schockierend, dass Django nicht in der Lage ist, mit ihnen zu kommunizieren, ohne etwas zu tricksen. Hier ist mein Modell:
from django.db import models
from django.db import connection, transaction
from mcif.models.mcif_model import McifModel
class Customer(McifModel):
class Meta:
db_table = u'customer'
app_name = 'mcif'
id = models.BigIntegerField(primary_key=True)
customer_number = models.CharField(unique=True, max_length=255)
social_security_number = models.CharField(unique=True, max_length=33)
name = models.CharField(unique=True, max_length=255)
phone = models.CharField(unique=True, max_length=255)
deceased = models.IntegerField(unique=True, null=True, blank=True)
do_not_mail = models.IntegerField(null=True, blank=True)
created_at = models.DateTimeField()
updated_at = models.DateTimeField()
def distinguishing_column_names(self):
return ['name', 'customer_number', 'social_security_number', 'phone']Haben Sie eine Idee, warum genau das nicht funktioniert?
Bearbeiten: Hier ist McifModel :
from django.db import models
from django.db import connection, transaction
class McifModel(models.Model):
class Meta:
abstract = True
def upsert(self):
cursor = connection.cursor()
cursor.execute(self.upsert_sql())
transaction.commit_unless_managed()
return self
def value_list(self):
return ','.join(map(lambda column_name: "'{c}'".format(c=getattr(self, column_name)), self.distinguishing_column_names()))
def upsert_sql(self):
column_names = ','.join(self.distinguishing_column_names())
return "INSERT IGNORE INTO {t} ({c}) VALUES ({v})".format(t=self._meta.db_table, c=column_names, v=self.value_list())
@classmethod
def save_from_row(cls, row):
object = cls()
map(lambda column_name: setattr(object, column_name, row.value(object._meta.db_table, column_name)), object.distinguishing_column_names())
return object.upsert()Edit: Ich habe tarequehs Rat befolgt und den Inhalt der Caktus-Datei in mcif/utils.py . Ich setze auch TEST_RUNNER = 'mcif.utils.ManagedModelTestRunner' . Wenn ich die Konsole aufrufe, kann ich überprüfen, dass Customer wird nicht verwaltet:
>>> [m for m in get_models() if not m._meta.managed]
[<class 'mcif.models.customer.Customer'>]Mein Test meldet jedoch immer noch, dass die Tabelle nicht existiert. Was übersehe ich?
Hier ist meine settings.py:
# Django settings for mcifdjango project.
DEBUG = True
TEMPLATE_DEBUG = DEBUG
ADMINS = (
('Jason Swett', 'jason.swett@gmail.com'),
)
MANAGERS = ADMINS
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.mysql', # Add 'postgresql_psycopg2', 'postgresql', 'mysql', 'sqlite3' or 'oracle'.
'NAME': 'xxxxx', # Or path to database file if using sqlite3.
'USER': 'xxxxx', # Not used with sqlite3.
'PASSWORD': 'xxxxx', # Not used with sqlite3.
'HOST': '', # Set to empty string for localhost. Not used with sqlite3.
'PORT': '', # Set to empty string for default. Not used with sqlite3.
}
}
# Local time zone for this installation. Choices can be found here:
# http://en.wikipedia.org/wiki/List_of_tz_zones_by_name
# although not all choices may be available on all operating systems.
# On Unix systems, a value of None will cause Django to use the same
# timezone as the operating system.
# If running in a Windows environment this must be set to the same as your
# system time zone.
TIME_ZONE = 'America/Chicago'
# Language code for this installation. All choices can be found here:
# http://www.i18nguy.com/unicode/language-identifiers.html
LANGUAGE_CODE = 'en-us'
SITE_ID = 1
# If you set this to False, Django will make some optimizations so as not
# to load the internationalization machinery.
USE_I18N = True
# If you set this to False, Django will not format dates, numbers and
# calendars according to the current locale
USE_L10N = True
# Absolute path to the directory that holds media.
# Example: "/home/media/media.lawrence.com/"
MEDIA_ROOT = ''
# URL that handles the media served from MEDIA_ROOT. Make sure to use a
# trailing slash if there is a path component (optional in other cases).
# Examples: "http://media.lawrence.com", "http://example.com/media/"
MEDIA_URL = ''
# URL prefix for admin media -- CSS, JavaScript and images. Make sure to use a
# trailing slash.
# Examples: "http://foo.com/media/", "/media/".
ADMIN_MEDIA_PREFIX = '/media/'
# Make this unique, and don't share it with anybody.
SECRET_KEY = '#7+qm%hqfe+z8ul5@x_i&sqmu!n=4sa0&i0_#)m99*w$fbk3%#'
# List of callables that know how to import templates from various sources.
TEMPLATE_LOADERS = (
'django.template.loaders.filesystem.Loader',
'django.template.loaders.app_directories.Loader',
# 'django.template.loaders.eggs.Loader',
)
MIDDLEWARE_CLASSES = (
'django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
)
ROOT_URLCONF = 'mcifdjango.urls'
TEMPLATE_DIRS = (
# Put strings here, like "/home/html/django_templates" or "C:/www/django/templates".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
)
INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.admin',
'django_extensions',
'mcif',
# Uncomment the next line to enable the admin:
# 'django.contrib.admin',
# Uncomment the next line to enable admin documentation:
# 'django.contrib.admindocs',
)
TEST_RUNNER = 'mcif.utils.ManagedModelTestRunner'
import os
ROOTDIR = os.path.abspath(os.path.dirname(__file__))
TEMPLATE_DIRS = (
# Put strings here, like "/home/html/django_templates" or "C:/www/django/templates".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
ROOTDIR + '/mcif/templates',
)Bearbeiten 2:
Hier ist mein Customer Klasse jetzt:
from django.db import models
from django.db import connection, transaction
from mcif.models.mcif_model import McifModel
class Customer(McifModel):
class Meta:
db_table = u'customer'
managed = False
id = models.BigIntegerField(primary_key=True)
customer_number = models.CharField(unique=True, max_length=255)
social_security_number = models.CharField(unique=True, max_length=33)
name = models.CharField(unique=True, max_length=255)
phone = models.CharField(unique=True, max_length=255)
deceased = models.IntegerField(unique=True, null=True, blank=True)
do_not_mail = models.IntegerField(null=True, blank=True)
created_at = models.DateTimeField()
updated_at = models.DateTimeField()
def distinguishing_column_names(self):
return ['name', 'customer_number', 'social_security_number', 'phone']So sieht das Ergebnis aus, wenn ich den Test ausführe:
$ ./manage.py test mcif.CustomerUpsertTest
Creating test database 'default'...
Creating table auth_permission
Creating table auth_group_permissions
Creating table auth_group
Creating table auth_user_user_permissions
Creating table auth_user_groups
Creating table auth_user
Creating table auth_message
Creating table django_content_type
Creating table django_session
Creating table django_site
Creating table django_admin_log
Installing index for auth.Permission model
Installing index for auth.Group_permissions model
Installing index for auth.User_user_permissions model
Installing index for auth.User_groups model
Installing index for auth.Message model
Installing index for admin.LogEntry model
No fixtures found.
E
======================================================================
ERROR: test_upsert (mcif.tests.customer_upsert_test.CustomerUpsertTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/jason/projects/mcifdjango/mcif/tests/customer_upsert_test.py", line 9, in test_upsert
customer.upsert()
File "/home/jason/projects/mcifdjango/mcif/models/mcif_model.py", line 11, in upsert
cursor.execute(self.upsert_sql())
File "/usr/lib/pymodules/python2.6/django/db/backends/mysql/base.py", line 86, in execute
return self.cursor.execute(query, args)
File "/usr/lib/pymodules/python2.6/MySQLdb/cursors.py", line 166, in execute
self.errorhandler(self, exc, value)
File "/usr/lib/pymodules/python2.6/MySQLdb/connections.py", line 35, in defaulterrorhandler
raise errorclass, errorvalue
DatabaseError: (1146, "Table 'test_mcif_django.customer' doesn't exist")
----------------------------------------------------------------------
Ran 1 test in 3.724s
FAILED (errors=1)
Destroying test database 'default'...
