Python 为什么我在我的 Django 项目中不断收到这个“名称'模型'未定义”错误？

Why do I keep getting this "name 'Model' is not defined" error in my Django project?

提问by Wadzanai Mufunde

I've looked through the stackoverflow questions under this topic already and I moved my Trainer class to be above my Class_Training class, but I still keep getting the same "name 'Model' is not defined" error when I enter 'manage.py create superuser' on my command prompt.

我已经查看了该主题下的 stackoverflow 问题，并且将 Trainer 类移到了 Class_Training 类的上方，但是当我输入“manage.py create”时，我仍然收到相同的“名称 'Model' 未定义”错误超级用户”在我的命令提示符下。

Also, I am having diffuclty migrating my models. I tried 'django-admin makemigrations training' but django-admin as not recoginised; and 'manage.py makemigrations training' but makemigrations was not recognised.

另外，我很难迁移我的模型。我尝试过“django-admin makemigrations training”，但无法识别 django-admin；和 'manage.py makemigrations training' 但 makemigrations 未被识别。

How do I migrate my models?

如何迁移我的模型？

Here is my code:

这是我的代码：

    #from django.db import models
 from django_pg import models

# Create your models here.
TRAINING_TYPE_CHOICES = (
    ('AC', 'Armed Combat'),
    ('UC', 'Unarmed Combat'),
    ('P', 'Piloting'),
    ('O', 'Other'),
)

GENDER_CHOICES = (
    ('F', 'Female'),
    ('M', 'Male'),
    ('U', 'Unspecified'),
    )
OUTCOME_CHOICES = (
    ('P', 'Pass'),
    ('F', 'Fail'),
    )

class Trainer(models, Model):
    first_name = models.CharField(max_length = 25)
    surname = models.CharField(max_length = 30)
    address = models.CharField(max_length = 200)
    gender = models.CharField(max_length = 1, choices = GENDER_CHOICES)
    citizenship = models.CharField(max_length = 30)
    email = models.EmailField(max_length = 30)

class Class_Training(models, Model):
    trainer = models.ForeignKey('Trainer')
    class_name = models.CharField(max_length = 30)
    type_of_class = models.CharField(max_length = 2, choices= TRAINING_TYPE_CHOICES)
    description = models.TextField(max_length = 200)

    def __str__(self):
            return self.class_name, self.trainer


class ReportLog(models.CompositeField):
    class_ID = models.IntegerField
    hero_ID = models.IntegerField
    outcome = models.CharField(max_length = 1, choices = OUTCOME_CHOICES)
    comments = models.TextField
    trainer = models.IntegerField

    class Meta:
        db_type = 'report'

class Attendance(models.CompositeField):
    class_ID = models.IntegerField
    hero_ID = models.IntegerField
    room_name = models.CharField(max_length = 30)
    date = models.DateField
    start_time = models.TimeField
    end_time = models.TimeField

    class Meta:
        db_type = 'attendance'

class Room(models, Model):
    room_name = models.CharField(max_length = 20)

class Hero(models, Model):
    codename = models.CharField(max_length = 20)

    def __str__(self):
        return self.codename

采纳答案by masnun

Fixing the issue with Model

解决问题 Model

You have used models, Modelinstead of models.Modelin some of your model definitions. The Modelclass is in the modelmodule. That's why we use a .instead of a comma.

您在某些模型定义中使用了models, Model而不是models.Model。该Model班是在model模块。这就是为什么我们使用 a.而不是逗号的原因。

Room model:

房间模型：

class Room(models.Model):

Hero model:

英雄模型：

class Hero(models.Model):

Trainer model:

教练机型号：

class Trainer(models.Model):

And finally:

最后：

class Class_Training(models.Model):

Fixing the issue with Migrations

解决迁移问题

It should be:

它应该是：

python manage.py makemigrations

You need pythoncommand. Also check if you are in the directory where your manage.pyis.

你需要python命令。还要检查您是否在您所在的目录中manage.py。