Python custom page-out program

To prevent XSS as a cross-site scripting attack, you need to add safe

# route from Django.conf.urls import urlfrom django.contrib import adminfrom mypaginator import viewsurlpatterns = [url (r ') ^admin/', admin.site.urls), url (r ' ^hosts.html$ ', views.hosts),]# view function def hosts (request): "" "Create Test Data" "" # for I In Range (303): # NAME = "c%s.com"% i # port = i # models. Host.objects.create (hostname=name,port=port) # return HttpResponse ("OK") # Default shows 10 data per page items_per_page = 10 # ago url:http://127.0.0.1:8001/hosts.html?page=2 current_page = Int (request.    Get.get (' page ')) # X-items_per_page* (x-1) ~ items_per_page*x Start_item = items_per_page* (current_page-1) End_item = items_per_page*current_page # Gets the corresponding number of items Host_list = models from the database in the form of a slice. Host.objects.all () [Start_item:end_item] page_str = "" <a href= "hosts.html?page=1" >1</a> < A href= "hosts.html?page=2" >2</a> <a href= "hosts.html?page=3" >3</a> "" "Return Render (req Uest, ' hosts.html ', localS ()) # Front end html...<div class= "pagination" > {{Page_str|safe}}</div> .... 

　　

Customizing the paging component

# route from Django.conf.urls import urlfrom django.contrib import adminfrom mypaginator Import viewsurlpatterns = [    URL (r ' ^admin/', admin.site.urls),    url (r ' ^hosts.html$ ', views.hosts),]

　　

# modelsfrom django.db Import models# Create your models Here.class Host (models. Model):    hostname = models. Charfield (max_length=32)    port = models. Charfield (max_length=10)

　　

# Pagination component:.. \paginator\utils\paginator.py#!/usr/bin/python#-*-coding:utf-8-*-class paginator (object): Def __init__ (Self,all_        count,current_page,base_url,per_page=10,per_page_count=11): "" "Paging component initialization:p Aram All_count: Total number of pieces of data  :p Aram Current_page: Current page:p aram base_url: Base URL:p Aram Per_page: Number of entries per page:p Aram Per_page_count: Number of pages displayed "" "Self.all_count = all_count self.current_page = current_page Self.base_url = Base_u RL Self.per_page = Per_page Self.per_page_count = Per_page_count # Calculates the true number of pages Pager_count, REM Ainder = Divmod (Self.all_count, self.per_page) if 0! = remainder:pager_count + 1 Self.pager_cou NT = pager_count # displays 11 page numbers each time (except for previous, next, first, and last) and lets the current selection page always be centered self.half_per_page_count = Int (self.per_page_c OUNT/2) @property def start (self): Start index of "" "Data entry # X-items_per_page* (x-1) ~ Items_per_ Page*x:reTurn: "" "Return Self.per_page * (self.current_page-1) @property def end (self): number of" ""  End of Entry index # items_per_page* (x-1) ~ Items_per_page*x:return: "" "Return Self.per_page        * Self.current_page @property def page_html (self): # get the correct start and end page numbers # to determine if the true number of pages is more than Per_page_count If Self.pager_count > Self.per_page_count: # If current page < Half_per_page_count if self.current_p            Age <= Self.half_per_page_count:pager_start = 1 Pager_end = Self.per_page_count # If the current page number is greater than half_per_page_count and is less than Pager_count-half_per_page_count elif self.current_page <= SELF.PA                Ger_count-self.half_per_page_count:pager_start = Self.current_page-self.half_per_page_count            Pager_end = self.current_page + self.half_per_page_count # If the current page number is greater than pager_count-half_per_page_count            Else    Pager_start = self.pager_count-self.per_page_count + 1 pager_end = Self.pager_count Else: Pager_start = 1 Pager_end = Self.pager_count page_list = [] first_page = ' <a href= ' {}?p            Age=1 "> Home </a>". Format (Self.base_url) page_list.append (first_page) if self.current_page > 1:            Prev = ' <a href= ' {}?page={} ' > previous page </a> '. Format (self.base_url,self.current_page-1) Else: Prev = ' <a href= ' javascript:void (0) "disabled=" true "> Previous </a> ' Page_list.append (prev) # cycle Generation HT ML for I in range (Pager_start, Pager_end + 1): if i = = Self.current_page:tpl = ' <a cl Ass= "Active" href= "{}?page={}" >{}</a> ". Format (self.base_url,i, i) Else:tpl = ' <a hr Ef= "{}?page={}" >{}</a> ". Format (self.base_url,i, i) page_list.append (TPL) if Self.current_page & Lt   Self.pager_count:         NEX = ' <a href= ' {}?page={} ' > Next </a> '. Format (self.base_url,self.current_page + 1) Else: NEX = ' <a href= ' javascript:void (0) "disabled=" true "> Next </a>". Format (self.current_page + 1) page_lis T.append (NEX) last_page = ' <a href= ' {}?page={} ' > Last </a> '. Format (Self.base_url,self.pager_count) p Age_list.append (last_page) page_str = "". Join (page_list) return page_str

　　

# view function from django.shortcuts import render,httpresponse# Create your view here.from mypaginator import Modelsfrom UTILS.PA     Ginator Import Paginatordef hosts (Request): "" "Create Test Data" "" # For I in range (303): # NAME = "c%s.com"% i # Port = i # models.        Host.objects.create (hostname=name,port=port) # return HttpResponse ("OK") # back end generates good page HTML and then returns to the front display _PAGE_STR = "" " <a href= "hosts.html?page=1" >1</a> <a href= "hosts.html?page=2" >2</a> <a HRE f= "hosts.html?page=3" >3</a> "" "# Front-end request url:http://127.0.0.1:8001/hosts.html?page=2 current_page = Int (re Quest. Get.get (' page ')) # First gets the total number of data bars All_count = models. Host.objects.all (). Count () pager = Paginator (all_count=all_count,current_page=current_page,base_url=request.path_ Info) # Items Host_list = models that have the corresponding number of pages from the database in the form of slices. Host.objects.all () [pager.start:pager.end] Page_str = pager.page_html return render (Request, ' hosts.html ', locals ())

# front html<!    DOCTYPE html>
　　
Python custom page-out program