Django mange.py migrate --> 没有迁移文件夹，也没有创建表

Question

我最近开始同时尝试 python 和 Django。在玩了几个来自 GitHub 和/或 youtube 的小项目之后，我现在尝试自己从头开始。

我的问题是，命令

python manage.py migrate

仅在我的本地 mysql 数据库中创建这 10 个“标准”Django 和“auth”表。

附上你可以找到我的项目结构。我开始的方式是使用“django-admin startproject Nico”。

然后一步一步创建模型、视图、表单和模板。

我最好的猜测是，迁移命令找不到模型文件。 但我不知道在哪里指定。至少这是一个缺失的环节。在我之前的完整示例中，我不必声明这一点。这会朝着正确的方向发展吗？

views.py

from django.views.generic.base import TemplateView

from ReProg.ReProg.models import Kunde
from ReProg.ReProg.forms import KundeForm

class HP(TemplateView):
    Model = Kunde
    Form = KundeForm
    #template_name = "TestViewHello.html"
    #template_name = "KundenAufnahme.html"
    template_name = "KundenAufnahme2.html"

forms.py

from django import forms
from django.http import HttpResponse, HttpResponseNotFound
from django.shortcuts import render
from crispy_forms.helper import FormHelper
from crispy_forms.layout import Submit


class KundeForm(forms.Form):
    #KID = forms.CharField(attrs={'disabled': True})
    KID = forms.CharField()
    first_name = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'ReProg'}))
    last_name = forms.CharField(widget=forms.TextInput(attrs={'placeholder': 'Wilhelm'}))
    email = forms.CharField(widget=forms.TextInput(attrs={'placeholder': '123@Mail.com'}))
    def __init__(self, *args, **kwargs):
        super(KundeForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.form_method = 'post'
        self.helper.add_input(Submit('submit', 'Submit'))

模型.py

from django.db import models
from django.forms import ModelForm
from datetime import date


###########Kunde
class Kunde(models.Model):
    KID = models.CharField(primary_key=True, max_length=20)
    first_name = models.CharField(max_length=50)
    last_name = models.CharField(max_length=50)
    email = models.EmailField(max_length=100, blank=True)
def KID(key):
    num = Request.objects.all().count()
    return K + str(num)

class KundeMF(ModelForm):
    class Meta:
        model = Kunde
        fields = ['first_name', 'last_name', 'KID']

settings.py

Django settings for ReProg project.

Generated by 'django-admin startproject' using Django 3.1.5.

For more information on this file, see
https://docs.djangoproject.com/en/3.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.1/ref/settings/
"""

from pathlib import Path
import os

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '+e69jgm56u85imt)(=6@82@c60222e9-z0+h8b+kxwhe(kc*z4'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = ['*']


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'ReProg',
    'crispy_forms',
]
CRISPY_TEMPLATE_PACK = 'bootstrap4'


MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'ReProg.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 = 'ReProg.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'ReProg',
        'USER': 'root',
        'PASSWORD': '123456',
        'HOST': 'localhost',
        'PORT': '3306',
    }
}


# Password validation
# https://docs.djangoproject.com/en/3.1/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/3.1/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/3.1/howto/static-files/

STATIC_URL = '/static/'

Answer 1

1. python manage.py makemigrations <app name>
2. python manage.py migrate <app name>

Answer 2

首先进行以​​下操作

python manage.py makemigrations
python manage.py migrate

如果问题没有解决，请执行以下操作：

1- 如果在应用目录中找不到文件夹 migrations，则创建它。

2- 如果找到文件夹，请检查文件夹内的 __init__.py 文件。 如果找不到此文件，请创建名称为 __init__.py 的新文件。

Answer 3

它与添加

我忘了提到在迁移之前我执行了“makemigrations”。 但是它说“没有检测到变化”或类似的东西。

现在它可以工作了。我现在可以在 mysql 中看到该表。 [在此处输入图片说明][1]

谢谢所有 [1]：https://i.stack.imgur.com/HaKFg.png