python - makemigrations 没有检测到新模型

Question

Django 1.11。我最近将以下模块添加到 myapp.models:

from django.db import models
from ordered_model.models import OrderedModel

from .songs import Song

class Service(models.Model):
    name = models.CharField(max_len=200, unique=True)
    date = models.DateField(blank=True)
    items = models.ManyToManyField(ServiceItem)

    class Meta:
        ordering = ('-date', 'name')

class ServiceItem(OrderedModel):
    item = models.ForeignKey(Song)
    song_custom_order = models.CharField(max_len=50, blank=True)
    order_with_respect_to = 'service'

    class Meta(OrderedModel.Meta):
        pass

我在另一个模块中有其他模型(在同一目录中)。当我运行 ./manage.py makemigrations 时，脚本会在我的其他模块中找到我的更改，但在这个模块中找不到。 FWIW，这个模块是全新的代码，之前没有迁移历史。

知道为什么这些更改没有被采纳吗？

Answer 1

模型必须导入到 models 包的 __init__.py 文件中。来自docs :

The manage.py startapp command creates an application structure that includes a models.py file. If you have many models, organizing them in separate files may be useful.

To do so, create a models package. Remove models.py and create a myapp/models/ directory with an __init__.py file and the files to store your models. You must import the models in the __init__.py file. For example, if you had organic.py and synthetic.py in the models directory:

myapp/models/__init__.py

from .organic import Person
from .synthetic import Robot