python django 原生sql 获取数据

node2:/django/mysite/blog#cat views.py
1,

# -*- coding: utf-8 -*-
from __future__ import unicode_literals
# from django.shortcuts import render, render_to_response
from .models import *
# Create your views here.
from django.http import HttpResponse
from django.template import loader
import MySQLdb

def query():
    conn= MySQLdb.connect(
        host='localhost',
        port = 3306,
        user='root',
        passwd='1234567',
        db ='tlcb',
        )
    cur = conn.cursor()
    a=cur.execute("select title,body, DATE_FORMAT(timestamp,'%Y~%m~%d %k.%i.%s') A from blog_blogpost")
    info = cur.fetchall()
    return info
    cur.close()
    conn.close()

def archive(req):
  print 'aaaaaaaaaaaaaaaaaaaaaaaaaaa'
  print req
  print type(req)
  print req.GET
  print '#############################'
  print req.GET['aa']
  print req.GET['cc']
  print '#############################'
  print 'aaaaaaaaaaaaaaaaaaaaaaaaaaa'
# get all blogpost objects
  posts =query() 
  print posts
  print type(posts)
  #print blog_list
  template = loader.get_template('archive.html')
  context = {
  'posts':posts
  }
  print '------------------------------------------'
  print  HttpResponse(template.render(context, req))
  print '------------------------------------------'
  return HttpResponse(template.render(context, req))
node2:/django/mysite/blog#


node2:/django/mysite/blog/templates#vi archive.html
node2:/django/mysite/blog/templates#
node2:/django/mysite/blog/templates#
node2:/django/mysite/blog/templates#
node2:/django/mysite/blog/templates#cat archive.html
{% extends "base.html" %}  
{% block content %}
      {% for post in posts %}
      <h2>{{  post.0 }}</h2>
      <p>{{ post.1 | date:"1,F jS"}}</p>
      <p>{{ post.2 }}</p>
      {% endfor %}
  {% endblock %}



(('dd', 'ddd', '2017~11~24 8.31.42'), ('66666666', '66666', '2017~11~24 8.35.25'), ('777777777', '77777777777', '2017~11~27 1.46.15'))
<type 'tuple'>






  在自定义 model 方法和模块级方法里,你可以自由的执行自定义SQL语句. 对象 django.db.connection 表示当前的数据库连接. 调用connection.cursor() 得到一个游标对象. 然后调用 cursor.execute(sql, [params])``以执行 SQL 语句, 使用 ``cursor.fetchone() 或cursor.fetchall() 得到结果集. 下面是一个例子:
def my_custom_sql(self): 
    from django.db import connection 
    cursor = connection.cursor() 
    cursor.execute("SELECT foo FROM bar WHERE baz = %s", [self.baz]) 
    row = cursor.fetchone() 
    return row 

        如果你的SQL语句改变了数据库中的数据 -- 比如你使用了 DELETE 或 UPDATE 语句. 你需要调用 connection.commit() 来使你的修改生效.
例子:
def my_custom_sql2(self): 
    from django.db import connection 
    cursor = connection.cursor() 
    cursor.execute("DELETE FROM bar WHERE baz = %s", [self.baz]) 
    connection.commit()