django 引入三方数据库

首先配置到setting中

    'mytestdb': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'testdb',
        'USER': 'test',
        'PASSWORD': 'test',
        'HOST': '1.1.1.1',
        'PORT': 3306,
        'OPTIONS': {
            'init_command': 'SET default_storage_engine=INNODB;',
        },
    }

然后根据数据库配置，导出建表信息为django的model信息，将该信息编写到对应的model中

(python36) [root@xxxx]# python manage.py inspectdb --database mytestdb
# 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 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 __future__ import unicode_literals

from django.db import models

class testtab(models.Model):
    id = models.AutoField(primary_key=True)
    age = models.IntegerField()


    class Meta:
        managed = False
        db_table = 'testtab'

Viewset 中使用

 queryset = testtab.objects.all().using("mytestdb")

直接连库使用

testtabfilter = testtab.objects.filter(age=18).using('mytestdb')