Django：关系不存在

Question

我已经从 bitbucket 中提取了我的项目更新并尝试了以下命令 'python3 manage.py makemigrations'、'python3 manage.py migrate vehicle'、'python3 manage.py migrate'。但是我收到以下错误。车辆应用程序是新的，它的一些模型使用来自其他应用程序的外键，这些应用程序之前已迁移并在数据库中。我尝试了不同的方法，但找不到解决方案。我正在使用 django-1.7.4 我很感激任何建议。

return _bootstrap._gcd_import(name[level:], package, level)                                                                                            
  File "<frozen importlib._bootstrap>", line 986, in _gcd_import                                                                                           
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load                                                                                        
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked                                                                               
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked                                                                                        
  File "<frozen importlib._bootstrap_external>", line 665, in exec_module                                                                                  
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed                                                                             
  File "/apps/project/beta/apps/site/admin.py", line 7, in <module>                                                                                         
    from .forms import MenuSubItemAdminForm, MenuChildrenAdminForm                                                                                         
  File "/apps/project/beta/apps/site/forms.py", line 18, in <module>                                                                                        
    class AdvancedVehicleSearchForm(forms.Form):                                                                                                           
  File "/apps/project/beta/apps/site/forms.py", line 24, in AdvancedVehicleSearchForm                                                                       
    make_choices = [(make.id, '{} ({})'.format(make.name, make.stock_count)) for make in Make.objects.get_public().filter(stock_count__gt=0)]              
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/db/models/query.py", line 141, in __iter__                                       
    self._fetch_all()                                                                                                                                      
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/db/models/query.py", line 966, in _fetch_all                                     
    self._result_cache = list(self.iterator())                                                                                                             
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/db/models/query.py", line 265, in iterator                                       
    for row in compiler.results_iter():                                                                                                                    
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 700, in results_iter                            
    for rows in self.execute_sql(MULTI):                                                                                                                   
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/db/models/sql/compiler.py", line 786, in execute_sql                             
    cursor.execute(sql, params)                                                                                                                            
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/db/backends/utils.py", line 81, in execute                                       
    return super(CursorDebugWrapper, self).execute(sql, params)                                                                                            
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute                                       
    return self.cursor.execute(sql, params)                                                                                                                
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/db/utils.py", line 94, in __exit__                                               
    six.reraise(dj_exc_type, dj_exc_value, traceback)                                                                                                      
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/utils/six.py", line 658, in reraise                                              
    raise value.with_traceback(tb)                                                                                                                         
  File "/apps/project/.virtualenvs/beta/lib/python3.5/site-packages/django/db/backends/utils.py", line 65, in execute                                       
    return self.cursor.execute(sql, params)                                                                                                                
django.db.utils.ProgrammingError: relation "vehicle_make" does not exist                                                                                   
LINE 1: ..."."country_id", "vehicle_make"."stock_count" FROM "vehicle_m...

车辆应用，制作模型：

from django.db import models
from django.utils.text import slugify
from django.core.urlresolvers import reverse
from django.utils.translation import ugettext_lazy as _

from apps.location.models import Country
from project.abstract_classes import BaseModel, BaseManager
from .constants import FUEL_CHOICES, GEARBOX_GROUP_CHOICES, VEHICLE_TYPE_CHOICES

# Create your models here.
class Make(BaseModel):
    name = models.CharField(_('name'), max_length=50, unique=True, db_index=True)
    country = models.ForeignKey(Country, on_delete=models.CASCADE,
                                    null=True, related_name='makes')
    stock_count = models.PositiveIntegerField(_("Stock count"), default=0)

    objects = BaseManager()

    class Meta:
        ordering = ['country', 'name']

    def __str__(self):
        return self.name      

    def get_absolute_url(self):
        return reverse('vehicles-stock-by-make', kwargs={'make': slugify(self.name)})

settings.py

INSTALLED_APPS = (
    'django.contrib.admin',
    'easy_thumbnails',
    'adminsortable',

    'apps.location',    
    'apps.vehicle',     
)

Answer 1

对于我所看到的，我尝试在运行迁移之前验证 AdvancedVehicleSearchForm，尝试以 django 可以首先进行迁移的方式将与车辆相关的表单传递给车辆应用程序。抱歉，我无法为您在那里显示的文件提供更多帮助。希望对你有所帮助

Django：关系不存在

Django: relation does not exist

django

database-migration

django-errors