參考：http://www.jb51.net/article/128257.htm

coding=utf-8

from django.core.paginator import Paginator

def paginator(data_list, per_page, page_no):
"""封裝Django分頁"""
pages = Paginator(data_list, per_page)

# 防止超出頁數
if not page_no > 0:
page_no = 1
if page_no > pages.num_pages:
page_no = pages.num_pages

p = pages.page(page_no) # 獲取本頁數據

data = dict() # 獲取分頁信息
data[‘count‘] = pages.count
data[‘page_num‘] = pages.num_pages
data[‘per_page‘] = per_page
data[‘current‘] = page_no
data[‘start_index‘] = p.start_index() - 1

return p.object_list, page_no, data

class QueryWrapper(object):
"""查詢集包裝器。實現django Paginator需要的必要方法，實現和query一樣使用Paginator分頁"""

def init(self, sql, params=None, db="default"):
"""
:param sql: sql語句
:param params: sql語句的params參數
:param db: 數據庫名稱（Django配置）
"""
self.db = db
self.sql = sql
self.params = params

def count(self):
"""計算總頁數"""
sql = """select count(*) from (%s) _count""" % self.sql
# sql封裝方法請參考https://my.oschina.net/watcher/blog/1573503
return fetchone_sql((sql, self.params), db=self.db, flat=True) # 返回總頁數

def getslice(self, x, y):
""" self.__getslice(x, y) = self[x:y]"""
sql = self.sql + ‘ LIMIT {start}, {num}‘.format(start=x, num=y - x)
# sql封裝方法請參考https://my.oschina.net/watcher/blog/1573503
return fetchall_to_dict((sql, self.params), db=self.db) # 字典列表形式返回

def demo_orm():
"""使用Django的ORM分頁"""
# 示例：查詢status=1的用戶分頁，每頁10條，取第2頁數據（假設數據量足夠）
status = 1
per_page = 10
page_no = 2

# 使用Django的ORM
from django.contrib.auth.models import User

query = User.objects.filter(status=status).values("id", "username", "first_name")
one_page_data_list, page_no, page_data = paginator(query, per_page, page_no)
# one_page_data_list 即為第二頁數據，例如：[{"id": 1, "username": "111", "first_name": "aaa"}]
print one_page_data_list

def demo_raw():
"""使用原生sql實現相同分頁"""
# 示例：查詢status=1的用戶分頁，每頁10條，取第2頁數據（假設數據量足夠）
status = 1
per_page = 10
page_no = 2

sql = "select id, username, first_name from auth_user where status=%(status)s"
params = {"status": status} # 使用params防止sql註入
query = QueryWrapper(sql, params, "default")
one_page_data_list, page_no, page_data = paginator(query, per_page, page_no)
# one_page_data_list 同ORM獲取數據一樣
print one_page_data_list

if name == "main":
demo_orm()
demo_raw()

django原生sql