Django学习之分页器的使用-创新互联
# 创建项目 page_project
配置settings
启动
# 导入分页器相关模块
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
查看urls
from app01 import views urlpatterns = [ url(r'^admin/', admin.site.urls), url(r'^index/', views.index), ]查看views ，测试一条数据 ，准备数据100条
def index(request): # 插入一条数据 # book_1 = Book(title='python', price="60") # book_1.save() Booklist = [] for i in range(100): Booklist.append(Book(title="book" + str(i), price=30 + i * 2)) Book.objects.bulk_create(Booklist) """ :param request: :return: """ return HttpResponse("index")查看 一条数据 sqllite
查看插入的100条数据
功能1、展示数据里面的所有数据
def index(request): # 分页器 book_list = Book.objects.all() print(book_list, type(book_list)) return render(request, "index.html", locals())html 页面
前端页面显示如下
功能2、分页器常用的功能
views
book_list = Book.objects.all() paginator = Paginator(book_list, 3) # 每页显示三条数据 print(paginator, type(paginator)) print("count:", paginator.count) # 数据总数 print("num_pages", paginator.num_pages) # 总页数 print("page_range", paginator.page_range) # 页码的列表访问页面刷新获取数据
# 显示首页数据
views
first_page = (request.GET.get()) first_page_data = paginator.page(first_page)
index .html
显示首页 {% %}
{{ .}} ---{{ .}}
{% %}前端访问显示
功能三、根据请求页面数显示不同页面的数据，不存在的页面数据就显示首页
try: current_page_number = int(request.GET.get("page", 1)) if current_page_number < 34: current_page = paginator.page(current_page_number) elif current_page_number < 0: current_page = paginator.page(current_page_number) else: current_page = paginator.page(1) except EmptyPage as e: current_page = paginator.page(1)index.html
当前页面为 {% %}
{{ .}} ---{{ .}}
{% %}访问展示
超出34 页面默认显示首页
功能四、引入bootstrap 和 分页 格式 丰富样式
views
def index(request): # 分页器 book_list = Book.objects.all() paginator = Paginator(book_list, 10) # 每页显示三条数据 print(paginator, type(paginator)) page_range = paginator.page_range print("count:", paginator.count) # 数据总数 print("num_pages", paginator.num_pages) # 总页数 print("page_range", paginator.page_range) # 页码的列表 # 根据请求页面数显示不同页面的数据，不存在的页面数据就显示首页 try: current_page_num= int(request.GET.get("page", 1)) current_page = paginator.page(current_page_num) print(current_page, type(current_page)) print("object_list", current_page.object_list) except EmptyPage as e: current_page = paginator.page(1) return render(request, "index.html", locals())index 页面
当前页面为
-
{% for book in current_page %}
- {{ book.title }}:{{ book.price }} {% endfor %}
显示页码
循环遍历 页码数
{% for item in paginator.page_range %}当显示当前页面的时候加蓝
{% if current_page_num == item %}