我正在尝试使用heroku在我的django项目上配置多个数据库和数据库路由器。
使用一个数据库很容易使用
DATABASES = { 'default': dj_database_url.config() }
在我的本地设置中
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'nameuser3',
'USER': 'postgres',
'PASSWORD': 'XXXXXXXX',
'HOST': '127.0.0.1',
'PORT': '5432',
},
'admindb': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'nameadmin4',
'USER': 'postgres',
'PASSWORD': 'xxxxxx',
'HOST': '127.0.0.1',
'PORT': '5432',
}
}
我还设置了数据库路由器来读写特定数据库。
def db_for_read(self, model, **hints):
if model._meta.app_label == 'sgdb':
return 'admindb'
return 'default'
def db_for_write(self, model, **hints):
if model._meta.app_label == 'sgdb':
return 'admindb'
return 'default'
def allow_relation(self, obj1, obj2, **hints):
db1 = self.DATABASE_APPS_MAPPING.get(obj1._meta.app_label)
db2 = self.DATABASE_APPS_MAPPING.get(obj2._meta.app_label)
if db1 and db2:
return db1 == db2
return 'None'
def allow_migrate(self, db, app_label, model_name=None, **hints):
return True
我用谷歌搜索但无法找到关于如何配置数据库路由器以使用heroku数据库的任何结论。关于如何做到这一点的任何线索？
完整settings.py我上传到heroku -
import dj_database_url
import os
"""
Django settings for example project.
Generated by 'django-admin startproject' using Django 1.9.
For more information on this file, see
https://docs.djangoproject.com/en/1.9/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.9/ref/settings/
"""
# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
# BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
BASE_DIR = os.path.dirname(os.path.dirname(__file__))
# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.9/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
ALLOWED_HOSTS = []
# Application definition
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.sites',
'disqus',
'django.contrib.sitemaps',
'easy_maps',
'hitcount',
'accounts',
'localflavor',
'carts',
'marketing',
'crispy_forms',
'allauth',
'allauth.account',
'allauth.socialaccount',
'allauth.socialaccount.providers.facebook'
]
CRISPY_TEMPLATE_PACK = 'bootstrap3'
# Sign IN settings
ACCOUNT_AUTHENTICATION_METHOD = 'email'
ACCOUNT_LOGIN_ON_EMAIL_CONFIRMATION = True
# Sign UP settings
ACCOUNT_EMAIL_REQUIRED = True
ACCOUNT_USERNAME_REQUIRED = False
ACCOUNT_EMAIL_VERIFICATION = 'optional'
LOGIN_REDIRECT_URL = '/'
LOGOUT_REDIRECT_URL = '/'
SOCIALACCOUNT_QUERY_EMAIL = True
SOCIALACCOUNT_PROVIDERS = {
'facebook': {
'SCOPE': ['email', 'publish_stream'],
'METHOD': 'js_sdk' # instead of 'oauth2'
}
}
SITE_NAME='example.com'
#Newsletter
NEWSLETTER_CONFIRM_EMAIL = False
HITCOUNT_HITS_PER_IP_LIMIT = 0
HITCOUNT_KEEP_HIT_IN_DATABASE = { 'days': 30 }
DISQUS_WEBSITE_SHORTNAME = 'example'
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
DEFAULT_FROM_EMAIL = 'example@gmail.com'
EMAIL_HOST = 'smtp.gmail.com'
EMAIL_HOST_USER = 'example@gmail.com'
EMAIL_HOST_PASSWORD = 'example'
EMAIL_USE_TLS = True
EMAIL_PORT = 587
SITE_ID = 2
DEBUG = False
if DEBUG:
SITE_URL = "http://127.0.0.1:8000"
if not DEBUG :
SITE_URL = "http://www.example.com"
MIDDLEWARE_CLASSES = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
ROOT_URLCONF = 'example.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(BASE_DIR, 'templates')],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
WSGI_APPLICATION = 'example.wsgi.application'
# Database
# https://docs.djangoproject.com/en/1.9/ref/settings/#databases
# Password validation
# https://docs.djangoproject.com/en/1.9/ref/settings/#auth-password-validators
AUTH_PASSWORD_VALIDATORS = [
{
'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
},
{
'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
},
]
# Internationalization
# https://docs.djangoproject.com/en/1.9/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.9/howto/static-files/
# STATIC_URL = '/static/'
# STATIC_ROOT = os.path.join((BASE_DIR), 'static_cdn')
# MEDIA_ROOT = os.path.join((BASE_DIR), 'media_cdn')
# MEDIA_URL = '/media/'
STATIC_URL = '/static/'
STATIC_ROOT = os.path.join((BASE_DIR), 'static_cdn')
MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join((BASE_DIR), 'media_cdn')
STATICFILES_DIRS = [
os.path.join(BASE_DIR, "static"),
]
# db_from_env = dj_database_url.config(conn_max_age=500)
# db_from_env2 = dj_database_url.config(default ='postgres://address', conn_max_age=500)
# DATABASES['default'].update(db_from_env)
# DATABASES['admin'].update(db_from_env2)
DATABASES = {'default': dj_database_url.config(default='postgres://address') ,
'admin': dj_database_url.config(default='postgres://urladdress')}
DATABASE_ROUTERS = ['exampleapp.routers.DatabaseAppsRouter',]
SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')
ALLOWED_HOSTS = ['*']
答案 0 :(得分：1)
啊终于找到了它。
首先要做。 heroku pg：info。查看哪些数据库网址链接到您的应用。你应该看到你的应用程序的多个数据库。否则，在heroku上创建一个新数据库并将其与您的应用程序连接。
然后在settings.py中保持它与本地settings.py一样。不要使用dj_database_url。默认为database_url。瞧，heroku全部设置为多个dbs。
phew花了这么多小时才弄明白。感谢df.where(df.homeworkSubmitted==True).count()