Jove's Blog

# -*- coding: utf-8 -*-

import MySQLdb
import os

conn = MySQLdb.connect(host='127.0.0.1',user='qf',passwd='123456',charset='utf8' )
cur = conn.cursor()

conn.select_db('qf_core')

count = cur.execute('select title,slug,create_time,markdown from blog_post')

result=cur.fetchall()

template = """<!--
.. title: %s
.. id: %s
.. slug: %s
.. date: %s+08:00
.. tags:
.. link:
.. description:
.. type: text
-->

"""

for r in result:
    title = r[0]
    slug = r[1]
    time = r[2]
    markdown = r[3]
    f = open('%s.md'%title,'wb')

    f.write(unicode.encode(template%(title,slug,time.strftime('%Y-%m-%dT%H:%M:%S')),'utf-8'))
    f.write(unicode.encode(markdown,'utf-8'))

>>> from django.core.paginator import Paginator
>>> objects = ['john', 'paul', 'george', 'ringo']
>>> p = Paginator(objects, 2)#新建分页，参数为所有的obj，和每页显示数量
>>> p.count#所有的obj的数量
4
>>> p.num_pages#分出来的页数
2
>>> p.page_range#页数的列表
[1, 2]
>>> page1 = p.page(1)#得到第一页
>>> page1
<Page 1 of 2>
>>> page1.object_list#第一页的obj列表
['john', 'paul']

>>> page2 = p.page(2)
>>> page2.object_list
['george', 'ringo']
>>> page2.has_next()#是否有下一页
False
>>> page2.has_previous()#是否有前一页
True
>>> page2.has_other_pages()#是否有其他页
True
>>> page2.next_page_number()#下一页的地址，这里最好判断是否有，不然会异常
Traceback (most recent call last):
...
EmptyPage: That page contains no results

def my_pagination(request, queryset, display_amount=15, after_range_num = 5,bevor_range_num = 4):
    #按参数分页
    paginator = Paginator(queryset, display_amount)
    try:
        #得到request中的page参数
        page =int(request.GET.get('page'))
    except:
        #默认为1
        page = 1
    try:
        #尝试获得分页列表
        objects = paginator.page(page)
    #如果页数不存在
    except EmptyPage:
        #获得最后一页
        objects = paginator.page(paginator.num_pages)
    #如果不是一个整数
    except:
        #获得第一页
        objects = paginator.page(1)
    #根据参数配置导航显示范围
    if page >= after_range_num:
        page_range = paginator.page_range[page-after_range_num:page+bevor_range_num]
    else:
        page_range = paginator.page_range[0:page+bevor_range_num]
    return objects,page_range

def my_view(request):
    all_objects = some_model.objects.all()
    objects, page_range = my_pagination(request, all_objects)
    return render_to_response('a_template.html',{'objects':objects,'page_range':page_range},context_instance=RequestContext(request))

from django import forms
from django.contrib import admin
from django.contrib.admin.widgets import FilteredSelectMultiple
from django.contrib.auth.admin import GroupAdmin
from django.contrib.auth.models import Group,User

class GroupAdminForm(forms.ModelForm):
    users = forms.ModelMultipleChoiceField(queryset=User.objects.all(),
                                           widget=FilteredSelectMultiple('Users', False),
                                           required=False)
    class Meta:
        model = Group
        
    def __init__(self, *args, **kwargs):
        instance = kwargs.get('instance', None)
        if instance is not None:
            initial = kwargs.get('initial', {})
            initial['users'] = instance.user_set.all()
            kwargs['initial'] = initial
        super(GroupAdminForm, self).__init__(*args, **kwargs)
        
    def save(self, commit=True):
        group = super(GroupAdminForm, self).save(commit=commit)
        
        if commit:
            group.user_set = self.cleaned_data['users']
        else:
            old_save_m2m = self.save_m2m
            def new_save_m2m():
                old_save_m2m()
                group.user_set = self.cleaned_data['users']
            self.save_m2m = new_save_m2m
        return group

class MyGroupAdmin(GroupAdmin):
    form = GroupAdminForm

admin.site.unregister(Group)
admin.site.register(Group, MyGroupAdmin)

class Image(models.Model):
    UPLOAD_ROOT = '%Y/%m'
    title = models.CharField(max_length=100, unique=True,verbose_name=u'名称')
    image = models.ImageField(upload_to=UPLOAD_ROOT, verbose_name=u'图片')

from django.db import models
from django.core.files.base import ContentFile
from PIL import Image as PImage
from cStringIO import StringIO

class Image(models.Model):
    UPLOAD_ROOT = '%Y/%m'
    title = models.CharField(max_length=100, unique=True, verbose_name=u'名称')
    image = models.ImageField(upload_to=UPLOAD_ROOT, verbose_name=u'图片')

    #自动缩略
    def save(self, *args, **kwargs):
        org_image = PImage.open(self.image)
        
        if org_image.mode not in ('L', 'RGB'):
            org_image = org_image.convert('RGB')
        
        size=580
        width, height = org_image.size
        if width > size:
            delta = width / size
            height = int(height / delta)
            org_image.thumbnail((size, height), PImage.ANTIALIAS)
        
        #获取文件格式   
        split = self.image.name.rsplit('.',1)
        format=split[1]
        if format.upper()=='JPG':
            format = 'JPEG'
            
        # 将图片存入内存
        temp_handle = StringIO()
        org_image.save(temp_handle, format)
        temp_handle.seek(0) # rewind the file
        
        # 保存图像
        self.image.save(self.image.name, ContentFile(temp_handle.getvalue()) , save=False)
        
        super(Image, self).save(*args, **kwargs)

def checkSignature(request):
    signature=request.GET.get('signature',None)
    timestamp=request.GET.get('timestamp',None)
    nonce=request.GET.get('nonce',None)
    echostr=request.GET.get('echostr',None)
    #这里的token我放在setting，可以根据自己需求修改
    token=WECHAT_TOKEN

    tmplist=[token,timestamp,nonce]
    tmplist.sort()
    tmpstr="%s%s%s"%tuple(tmplist)
    tmpstr=hashlib.sha1(tmpstr).hexdigest()
    if tmpstr==signature:
        return echostr
    else:
        return None

from django.http import HttpResponse
from django.views.decorators.csrf import csrf_exempt

import hashlib

@csrf_exempt
def index(request):
    if request.method=='GET':
        response=HttpResponse(checkSignature(request))
        return response
    else:
        return HttpResponse('Hello World')

from django.conf.urls import patterns, include, url

urlpatterns=patterns('',
    url(r'^$','wechat.views.index'),

)

urlpatterns += patterns('',
    url(r'^wechat/',include('wechat.urls')),
)