Django內置分頁擴展
阿新 • • 發佈：2018-06-13
tom size pos sel oot oct iou HA object
url文件
urlpatterns = [ path(‘admin/‘, admin.site.urls), path(‘index1.html/‘, views.index1), ]
views文件
from django.shortcuts import render from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger # Create your views here. USER_LIST = [] for i in range(1,999): temp = {"name":"root"+str(i),"age":i} USER_LIST.append(temp) def index(request): per_page_count = 10 current_page=request.GET.get(‘p‘) current_page=int(current_page) start = (current_page - 1)*per_page_count end =current_page*per_page_count data = USER_LIST[start:end] if current_page<=1: prve_pag= 1 prve_pag = current_page -1 next_pag = current_page +1 return render(request,‘index.html‘,{"users":data,"prve_page":prve_pag,"next_page":next_pag}) class CustomPaginator(Paginator): def __init__(self,current_page,per_page_num,*args,**kwargs): super(CustomPaginator,self).__init__(*args,**kwargs) #當前頁 self.current_page = int(current_page) #最多顯示數量 self.per_page_num = int(per_page_num) def per_num_range(self): #如果總頁數小於最多顯示數量 if self.num_pages<self.per_page_num: return range(1,self.num_pages+1) part=int(self.per_page_num/2) #當前頁小於part（頁碼從領開始） if self.current_page <part: return range(1,self.per_page_num+1) #當前頁+part大於總頁數（頁碼最後一位已經顯示出來了） if (self.current_page+part)>self.num_pages: return range(self.num_pages - self.per_pager_num + 1, self.num_pages + 1) return range(self.current_page - part, self.current_page + part + 1) def index1(request): # 全部數據：USER_LIST，=》得出共有多少條數據 # per_page: 每頁顯示條目數量 # count: 數據總個數 # num_pages:總頁數 # page_range:總頁數的索引範圍，如: (1,10),(1,200) # page: page對象（是否具有下一頁；是否有上一頁；） current_page=request.GET.get(‘p‘) paginator = CustomPaginator(current_page,7,USER_LIST,10) try: posts=paginator.page(current_page) # has_next 是否有下一頁 # next_page_number 下一頁頁碼 # has_previous 是否有上一頁 # previous_page_number 上一頁頁碼 # object_list 分頁之後的數據列表，已經切片好的數據 # number 當前頁 # paginator paginator對象 except PageNotAnInteger: posts = paginator.page(1) except EmptyPage: posts=paginator.page((paginator.num_pages)) return render(request,"index1.html",{"posts":posts})
html文件
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <ul> {% for row in posts.object_list %} <li>{{ row.name }}--{{ row.age }}</li> {% endfor %} </ul> {% include ‘include/pager.html‘ %} </body> </html>
將分頁代碼放在include，這樣分頁功能就可以重用了
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> {% if posts.has_previous %} <a href="/index1.html?p={{ posts.previous_page_number }}">上一頁</a> {% endif %} {% for i in posts.paginator.per_num_range %} {% if i == posts.number %} <a style="font-size: 30px;" href="/index1.html?p={{ i }}">{{ i }}</a> {% else %} <a href="/index1.html?p={{ i }}">{{ i }}</a> {% endif %} {% endfor %} {% if posts.has_next%} <a href="/index1.html?p={{ posts.next_page_number }}">下一頁</a> {% endif %} <span>{{ posts.number }}/{{ posts.paginator.num_pages}}</span> </body> </html>
Django內置分頁擴展