REST publish demo of single PG table

.gitignore

+**/__pycache__

demo_users.py

+# This is an auto-generated Django model module.
+# You'll have to do the following manually to clean this up:
+#   * Rearrange models' order
+#   * Make sure each model has one field with primary_key=True
+#   * Make sure each ForeignKey and OneToOneField has `on_delete` set to the desired behavior
+#   * Remove `managed = False` lines if you wish to allow Django to create, modify, and delete the table
+# Feel free to rename the models, but don't rename db_table values or field names.
+from django.db import models
+
+
+class DemoUsers(models.Model):
+    user_id = models.AutoField(primary_key=True)
+    user_name = models.CharField(unique=True, max_length=255)
+    first_name = models.CharField(max_length=255, blank=True, null=True)
+    last_name = models.CharField(max_length=255, blank=True, null=True)
+    email = models.CharField(unique=True, max_length=255, blank=True, null=True)
+    hashed_password = models.CharField(max_length=255)
+    enabled_flag = models.BooleanField()
+    effective_from = models.DateTimeField()
+    effective_to = models.DateTimeField(blank=True, null=True)
+    created_by = models.CharField(max_length=255)
+    creation_date = models.DateTimeField()
+    last_updated_by = models.CharField(max_length=255, blank=True, null=True)
+    last_update_date = models.DateTimeField(blank=True, null=True)
+
+    class Meta:
+        managed = False
+        db_table = 'demo_users'

django_rest/asgi.py

+"""
+ASGI config for django_rest project.
+
+It exposes the ASGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/howto/deployment/asgi/
+"""
+
+import os
+
+from django.core.asgi import get_asgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_rest.settings')
+
+application = get_asgi_application()

django_rest/settings.py

+"""
+Django settings for django_rest project.
+
+Generated by 'django-admin startproject' using Django 4.2.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/topics/settings/
+
+For the full list of settings and their values, see
+https://docs.djangoproject.com/en/4.2/ref/settings/
+"""
+
+from pathlib import Path
+
+# 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/4.2/howto/deployment/checklist/
+
+# SECURITY WARNING: keep the secret key used in production secret!
+SECRET_KEY = 'django-insecure-@*-b&ao&wt@5r7+td8b2z=p!ln0^$#eogbr873wo&o8dqgx%5z'
+
+# SECURITY WARNING: don't run with debug turned on in production!
+DEBUG = True
+
+ALLOWED_HOSTS = [
+    '150.158.130.176'
+]
+
+
+# Application definition
+
+INSTALLED_APPS = [
+    'django.contrib.admin',
+    'django.contrib.auth',
+    'django.contrib.contenttypes',
+    'django.contrib.sessions',
+    'django.contrib.messages',
+    'django.contrib.staticfiles',
+]
+
+INSTALLED_APPS += [
+    'rest_framework',
+    'my_app'
+]
+
+
+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 = 'django_rest.urls'
+
+TEMPLATES = [
+    {
+        'BACKEND': 'django.template.backends.django.DjangoTemplates',
+        'DIRS': [],
+        '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 = 'django_rest.wsgi.application'
+
+
+# Database
+# https://docs.djangoproject.com/en/4.2/ref/settings/#databases
+
+# DATABASES = {
+#     'default': {
+#         'ENGINE': 'django.db.backends.sqlite3',
+#         'NAME': BASE_DIR / 'db.sqlite3',
+#     }
+# }
+
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.postgresql',
+        'NAME': 'demodb',
+        'USER': 'demo',
+        'PASSWORD': '#IBM2024may',
+        'HOST': 'localhost',  # 或者你的数据库地址
+        'PORT': '',  # 默认情况下可以留空
+    }
+}
+
+
+# Password validation
+# https://docs.djangoproject.com/en/4.2/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/4.2/topics/i18n/
+
+LANGUAGE_CODE = 'en-us'
+
+TIME_ZONE = 'UTC'
+
+USE_I18N = True
+
+USE_TZ = True
+
+
+# Static files (CSS, JavaScript, Images)
+# https://docs.djangoproject.com/en/4.2/howto/static-files/
+
+STATIC_URL = 'static/'
+
+# Default primary key field type
+# https://docs.djangoproject.com/en/4.2/ref/settings/#default-auto-field
+
+DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

django_rest/urls.py

+"""
+URL configuration for django_rest project.
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/4.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from django.contrib import admin
+from django.urls import path, include
+
+urlpatterns = [
+    path('admin/', admin.site.urls),
+    path('my_app/', include('my_app.urls')),
+]

django_rest/wsgi.py

+"""
+WSGI config for django_rest project.
+
+It exposes the WSGI callable as a module-level variable named ``application``.
+
+For more information on this file, see
+https://docs.djangoproject.com/en/4.2/howto/deployment/wsgi/
+"""
+
+import os
+
+from django.core.wsgi import get_wsgi_application
+
+os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_rest.settings')
+
+application = get_wsgi_application()

manage.py

+#!/usr/bin/env python
+"""Django's command-line utility for administrative tasks."""
+import os
+import sys
+
+
+def main():
+    """Run administrative tasks."""
+    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_rest.settings')
+    try:
+        from django.core.management import execute_from_command_line
+    except ImportError as exc:
+        raise ImportError(
+            "Couldn't import Django. Are you sure it's installed and "
+            "available on your PYTHONPATH environment variable? Did you "
+            "forget to activate a virtual environment?"
+        ) from exc
+    execute_from_command_line(sys.argv)
+
+
+if __name__ == '__main__':
+    main()

my_app/admin.py

+from django.contrib import admin
+
+# Register your models here.

my_app/apps.py

+from django.apps import AppConfig
+
+
+class MyAppConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'my_app'

my_app/models.py

+# This is an auto-generated Django model module.
+# You'll have to do the following manually to clean this up:
+#   * Rearrange models' order
+#   * Make sure each model has one field with primary_key=True
+#   * Make sure each ForeignKey and OneToOneField has `on_delete` set to the desired behavior
+#   * Remove `managed = False` lines if you wish to allow Django to create, modify, and delete the table
+# Feel free to rename the models, but don't rename db_table values or field names.
+from django.db import models
+
+
+class DemoUsers(models.Model):
+    user_id = models.AutoField(primary_key=True)
+    user_name = models.CharField(unique=True, max_length=255)
+    first_name = models.CharField(max_length=255, blank=True, null=True)
+    last_name = models.CharField(max_length=255, blank=True, null=True)
+    email = models.CharField(unique=True, max_length=255, blank=True, null=True)
+    hashed_password = models.CharField(max_length=255)
+    enabled_flag = models.BooleanField()
+    effective_from = models.DateTimeField()
+    effective_to = models.DateTimeField(blank=True, null=True)
+    created_by = models.CharField(max_length=255)
+    creation_date = models.DateTimeField()
+    last_updated_by = models.CharField(max_length=255, blank=True, null=True)
+    last_update_date = models.DateTimeField(blank=True, null=True)
+
+    class Meta:
+        managed = False
+        db_table = 'demo_users'
+
+    def __str__(self):
+        return self.user_name
+
+    def save(self, *args, **kwargs):
+        # 检查对象是否存在数据库中，即判断是否有主键pk
+        if self.pk:  # 对象已存在，表示是更新操作
+            # 在这里执行你希望在更新时发生的自动赋值逻辑
+            self.last_update_date = now()  # 你的自定义更新逻辑
+        else:
+            self.creation_date = new()
+        super().save(*args, **kwargs)  # 调用父类的save方法完成保存

my_app/serializers.py

+from rest_framework import serializers
+from .models import DemoUsers
+
+class DemoUsersSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = DemoUsers
+        fields = '__all__'
+

my_app/tests.py

+from django.test import TestCase
+
+# Create your tests here.

my_app/urls.py

+from django.urls import path
+from .views import DemoUsersListCreateView, DemoUsersRetrieveUpdateDestroyView
+
+urlpatterns = [
+    path('demo_user/', DemoUsersListCreateView.as_view(), name='list_demo_user'),
+    path('demo_user/<int:pk>/', DemoUsersRetrieveUpdateDestroyView.as_view(), name='edit_demo_user'),
+]
+

my_app/views.py

+# from django.shortcuts import render
+
+# Create your views here.
+
+from rest_framework import generics
+from .models import DemoUsers
+from .serializers import DemoUsersSerializer
+
+class DemoUsersListCreateView(generics.ListCreateAPIView):
+    queryset = DemoUsers.objects.all()
+    serializer_class = DemoUsersSerializer
+
+class DemoUsersRetrieveUpdateDestroyView(generics.RetrieveUpdateDestroyAPIView):
+    queryset = DemoUsers.objects.all()
+    serializer_class = DemoUsersSerializer