Python Django -从多个数据库读取数据

# settings.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'default_db',
        'USER': 'username',
        'PASSWORD': 'password',
        'HOST': 'localhost',
        'PORT': '3306',
    },
    'second_db': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'second_db',
        'USER': 'username',
        'PASSWORD': 'password',
        'HOST': 'localhost',
        'PORT': '3306',
    }
}

# models.py

from django.db import models

class Model1(models.Model):
    # 使用默认数据库连接
    field1 = models.CharField(max_length=100)
    field2 = models.IntegerField()

class Model2(models.Model):
    # 使用名为'second_db'的数据库连接
    field3 = models.CharField(max_length=100)
    field4 = models.IntegerField()

    class Meta:
        using = 'second_db'

# views.py

from django.shortcuts import render
from .models import Model1, Model2

def my_view(request):
    data1 = Model1.objects.all()  # 从默认数据库读取数据
    data2 = Model2.objects.using('second_db').all()  # 从'second_db'数据库读取数据

    return render(request, 'my_template.html', {'data1': data1, 'data2': data2})