Django 数据导入:

Django 数据导入:

备注:你可能会问数据从哪儿来,比如你用python从以前的blog上获取过来的,

想导入现在的博客,或者别人整理好的数据,或者你自己整理的excel表

我们新建一个项目 mysite, 再新建一个 app，名称为blog

django-admin.py startproject mysite
cd mysite
python manage.py startapp blog

把 blog 中的 models.py 更改为以下内容

node2:/app/mysite/blog#cat models.py
# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.db import models

# Create your models here.
from django.db import models
 
class Blog(models.Model):
    title = models.CharField(max_length=100)
    content = models.TextField()
     
    def __unicode__(self):
        return self.title


不要忘了把blog加入到settings.py中的INSTALLED_APPS 中。



# Application definition
INSTALLED_APPS = (
    ...
     
    # 添加上 blog 这个 app
    'blog',
)

一,同步数据库,创建相应的表

node2:/app/mysite#python manage.py makemigrations^C
node2:/app/mysite#set -o vi
node2:/app/mysite#python manage.py migrate
Operations to perform:
  Apply all migrations: admin, auth, blog, contenttypes, sessions
Running migrations:
  Applying blog.0001_initial... OK

二,输入 python manage.py shell 

进入该项目的django环境的终端(windows如何进入对应目录？）


先说如何用命令新增一篇文章:

$ python manage.py shell
>>> from blog.models import Blog
>>> Blog.objects.create(title="The first blog of my site", content="I am writing my blog on Terminal")

node2:/app/mysite# python manage.py shell
Python 2.7.3 (default, Mar 30 2017, 20:15:12) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from blog.models import Blog
>>> Blog.objects.create(title="The first blog of my site", content="I am writing my blog on Terminal")
<Blog: The first blog of my site>
>>> 

三,批量导入


比如我们要导入一个文本,里面是标题和内容,中间用四个*隔开的,示例(oldblog.txt)：


node2:/root#cat aa.txt | awk -F '****' '{print $1,$2}' | while read A B; do sh ./a1.sh $A $B; done
Blog.objects.create(title=title, content=1)
Blog.objects.create(title=title, content=2)
Blog.objects.create(title=title, content=3)
Blog.objects.create(title=title, content=4)
Blog.objects.create(title=title, content=5)
Blog.objects.create(title=title, content=6)
Blog.objects.create(title=title, content=7)
Blog.objects.create(title=title, content=8)
Blog.objects.create(title=title, content=9)
node2:/root#


在终端导入有时候有些不方便,我们在最外面那个mysite目录下写一个脚本,叫
 txt2db.py，把 oldblog.txt 也放在mysite下

node2:/app#cat a1.py 
import django
print django.VERSION
node2:/app#python a1.py
(1, 11, 0, u'final', 1)



node2:/app/mysite#cat a2.py 
#!/usr/bin/env python
#coding:utf-8
 
import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings")
 
'''
Django 版本大于等于1.7的时候，需要加上下面两句
import django
django.setup()
否则会抛出错误 django.core.exceptions.AppRegistryNotReady: Models aren't loaded yet.
'''
 
import django
if django.VERSION >= (1, 7):#自动判断版本
    django.setup()
 
 
def main():
    from blog.models import Blog
    f = open('oldblog.txt')
    for line in f:
        title,content = line.split('****')
        Blog.objects.create(title=title,content=content)
    f.close()
 
if __name__ == "__main__":
    main()
    print('Done!')