Question

我已经将这个问题拆开了大约一个星期。我查看了所有其他stackoverflow帖子，但无法弄明白。无论如何，我试图在我的项目中添加geodjango应用程序。这个项目还在开发中，无论如何，我有两个数据库，默认和一个标记为locations_db。我想在location数据库中使用geodjango功能，在默认数据库中需要所有其他内容。位置数据库是一个可以正常工作的postGIS数据库，默认是一个mysql数据库。我使用postGIS shell测试了位置数据库，我开始了一个新的django项目并使其成为纯粹的geodjango。两者都很好。但是，当我尝试运行任何类型的manage.py命令时，它会抛出错误：＆＃39; DatabaseOperations＆＃39;对象没有属性＆＃39; geo_db_type＆＃39;。我尝试使用--database选项进行迁移并使用数据库路由器。我该如何解决这个问题？作为参考，这是我的settings.py摘录有关数据库：

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.mysql',
    'NAME': 'xxxx',
    "USER":"xxxx",
    "PASSWORD":"xxxxxxxxx",
    'HOST': 'xxxxxxxxxx',
    'PORT': 'xxxx',
},
'locations_db':{
    'ENGINE':"django.contrib.gis.db.backends.postgis",
    'NAME': 'xxxxxxxxxx',
    "USER":"xxxxxxxxx",
    "PASSWORD":"xxxxxxxxxxxxxxxx",
    'HOST': 'xxxxxxxxx',
    'PORT': 'xxxx',
}
}
...
DATABASE_ROUTERS = ['locations.router.Router']
DATABASES['locations_db']['ENGINE'] = 'django.contrib.gis.db.backends.postgis'

这是我的路由器：

class Router(object): 
    def db_for_read(self, model, **hints):
        "Point all operations on locations models to 'locationsdb'"
        if model._meta.app_label == 'locations':
            return 'locations_db'
        return None

    def db_for_write(self, model, **hints):
        "Point all operations on locations models to 'locationsdb'"
        # print("working not in locations?")
        if model._meta.app_label == 'locations':
            print(model._meta.app_label)
            return 'locations_db'
        return None

    def allow_relation(self, obj1, obj2, **hints):
        "Allow any relation if a both models in locations app"
        # if obj1._meta.app_label == 'locations' and obj2._meta.app_label == 'locations':
        #     return True
        # # Allow if neither is locations app
        # elif 'locations' not in [obj1._meta.app_label, obj2._meta.app_label]: 
        #     return True
        if(obj2._meta.app_label == 'locations' or obj1._meta.app_label == "locations"):
            return True
        return None

    def allow_migrate(self, db, model):
        if(db == "locations_db"):
            return model._meta.app_label == 'locations'
        elif model._meta.app_label == 'locations':
            return False
        else:
            return None


    def allow_syncdb(self, db, model):
        # print("working not in locations?")
        if db == 'locations_db' or model._meta.app_label == "locations":
            print(model._meta.app_label)
            return False # we're not using syncdb on our legacy database
        else: # but all other models/databases are fine
            return True

和我的模特：

class Locations(models.Model):
    name = models.CharField(max_length=254)
    area = models.IntegerField()
    pop2005 = models.IntegerField('Population 2005')
    fips = models.CharField('FIPS Code', max_length=2)
    iso2 = models.CharField('2 Digit ISO', max_length=2)
    iso3 = models.CharField('3 Digit ISO', max_length=3)
    un = models.IntegerField('United Nations Code')
    region = models.IntegerField('Region Code')
    subregion = models.IntegerField('Sub-Region Code')
    lon = models.FloatField()
    lat = models.FloatField()

    # GeoDjango-specific: a geometry field (MultiPolygonField), and
    # overriding the default manager with a GeoManager instance.
    mpoly = models.PolygonField()
    objects = models.GeoManager()

提前感谢您的协助！

编辑：我正在使用django 1.8又称开发版。 postGIS版本2.1和postgres版本9.3

GeoDjango错误：＆＃39; DatabaseOperations＆＃39;对象没有属性＆＃39; geo_db_type＆＃39;

0 个答案: