• 获取postgres数据库的所有表名

      def get(self):
          try:
              tables = connection.introspection.table_names()
              return JsonRes(tables, success=True, info="get database name Successfully.")
          except Exception as err:
              return JsonRes(None, success=False, info='get database name failed, please check the format.')
  

  最后tables=[‘table1’, ‘table2’]

• 获取postgres数据库的一个表的所有column

    def get(self, request, tablename):
        try:
            with connection.cursor() as cursor:
                desc = connection.introspection.get_table_description(cursor, tablename)
                columns = [r[0] for r in desc]
            return JsonRes(columns, success=True, info="get column name Successfully.")
        except Exception as err:
            return JsonRes(None, success=False, info='get column name failed.')

这里区分以下flask和django下module的区别
django

# 从django引入module
from django.db import models

class USER(models.Model):

    name = models.CharField(db_index=True, max_length=200, null=False, default='')
    description = models.CharField(max_length=255, null=False, default='')
    teacher_id= models.ForeignKey('TEACHER', on_delete=models.CASCADE, default=1)
	# teacher_id作为user的外键
  
    class Meta:
        db_table = 'user'
        # 数据库名

    def __str__(self):
        return self.name

flask

from sqlalchemy import Column, String, ForeignKey

from cxcomm.db.model import BaseTable, HasId, HasTime


class USER(BaseTable, HasId, HasTime):
 
    __tablename__ = 'user'

    name = Column(String(255), nullable=False)
	description = Column(String(255), nullable=False)
    teacher_id= Column(String(36), ForeignKey('teacher.id'), nullable=True, index=True)

from yactrl.models.user import USER
# 导入之前的模型
from cxcomm.db.ormobject import ORMBaseObject
from cxcomm.db import fields


class USERObj(ORMBaseObject):
    """snmp object
    """
    db_model = USER
    fields = {
        'id': fields.UUIDField(nullable=True),
        'name ': fields.StringField(nullable=False),
        'description ': fields.UUIDField(nullable=False),
        'teacher_id': fields.StringField(nullable=True)
    }
    allow_update_key = ['description ']