分页 分页使用实例、应用技巧、基本知识点总结和需要注意事项
分页
时间:2020-03-12
本文章向你们介绍分页，主要包括分页使用实例、应用方法、基本知识点总结和须要注意事项分页，具有一定的参考价值分页，须要的同学可以参考一下。
分页
1 from django.shortcuts import render 2 from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger 3 4 L = [] 5 for i in range(999): 6 L.append(i) 7 8 def index(request): 9 current_page = request.GET.get('p')10 11 paginator = Paginator(L, 10)12 # per_page: 每页显示条目数量13 # count: 数据总个数14 # num_pages:总页数15 # page_range:总页数的索引范围，如: (1,10),(1,200)16 # page: page对象17 try:18 posts = paginator.page(current_page)19 # has_next 是否有下一页20 # next_page_number 下一页页码21 # has_previous 是否有上一页22 # previous_page_number 上一页页码23 # object_list 分页之后的数据列表24 # number 当前页25 # paginator paginator对象26 except PageNotAnInteger:27 posts = paginator.page(1)28 except EmptyPage:29 posts = paginator.page(paginator.num_pages)30 return render(request, 'index.html', {'posts': posts})
外置分页view函数
1 2 3 "en"> 4 "UTF-8"> 56 7 8
- 9 {% for item in posts %}10
- {{ item }} 11 {% endfor %}12
class="pagination">15 class="step-links">16 {% if posts.has_previous %}17 "?p={{ posts.previous_page_number }}">Previous18 {% endif %}19 class="current">20 Page {{ posts.number }} of {{ posts.paginator.num_pages }}.21 22 {% if posts.has_next %}23 "?p={{ posts.next_page_number }}">Next24 {% endif %}25 26 27
28 29
外置分页HTML页面
1 from django.shortcuts import render 2 from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger 3 4 5 class CustomPaginator(Paginator): 6 def __init__(self, current_page, max_pager_num, *args, **kwargs): 7 """ 8 :param current_page: 当前页 9 :param max_pager_num:最多显示的页码个数10 :param args:11 :param kwargs:12 :return:13 """14 self.current_page = int(current_page)15 self.max_pager_num = max_pager_num16 super(CustomPaginator, self).__init__(*args, **kwargs)17 18 def page_num_range(self):19 # 当前页面20 # self.current_page21 # 总页数22 # self.num_pages23 # 最多显示的页码个数24 # self.max_pager_num25 print(1)26 if self.num_pages < self.max_pager_num:27 return range(1, self.num_pages + 1)28 print(2)29 part = int(self.max_pager_num / 2)30 if self.current_page - part < 1:31 return range(1, self.max_pager_num + 1)32 print(3)33 if self.current_page + part > self.num_pages:34 return range(self.num_pages + 1 - self.max_pager_num, self.num_pages + 1)35 print(4)36 return range(self.current_page - part, self.current_page + part + 1)37 38 39 L = []40 for i in range(999):41 L.append(i)42 43 def index(request):44 current_page = request.GET.get('p')45 paginator = CustomPaginator(current_page, 11, L, 10)46 # per_page: 每页显示条目数量47 # count: 数据总个数48 # num_pages:总页数49 # page_range:总页数的索引范围，如: (1,10),(1,200)50 # page: page对象51 try:52 posts = paginator.page(current_page)53 # has_next 是否有下一页54 # next_page_number 下一页页码55 # has_previous 是否有上一页56 # previous_page_number 上一页页码57 # object_list 分页之后的数据列表58 # number 当前页59 # paginator paginator对象60 except PageNotAnInteger:61 posts = paginator.page(1)62 except EmptyPage:63 posts = paginator.page(paginator.num_pages)64 65 return render(request, 'index.html', {'posts': posts})
扩充外置分页view函数
1 2 3 "en"> 4 "UTF-8"> 56 7 8 9
- 10 {% for item in posts %}11
- {{ item }} 12 {% endfor %}13
class="pagination">16 class="step-links">17 {% if posts.has_previous %}18 "?p={{ posts.previous_page_number }}">Previous19 {% endif %}20 21 {% for i in posts.paginator.page_num_range %}22 "?p={{ i }}">{{ i }}23 {% endfor %}24 25 {% if posts.has_next %}26 "?p={{ posts.next_page_number }}">Next27 {% endif %}28 29 30 class="current">31 Page {{ posts.number }} of {{ posts.paginator.num_pages }}.32 33 34
35 36
扩充外置分页html页面
1 __author__ = 'Administrator' 2 from django.utils.safestring import mark_safe 3 4 5 class Pagination(object): 6 def __init__(self, current_page, data_count, per_page_count=7, pager_num=7): 7 try: 8 self.current_page = int(current_page) 9 except Exception as e:10 self.current_page = 111 self.data_count = data_count12 self.per_page_count = per_page_count13 self.pager_num = pager_num14 15 @property16 def start(self):17 return (self.current_page - 1) * self.per_page_count18 19 @property20 def end(self):21 return self.current_page * self.per_page_count22 23 @property24 def total_count(self):25 v, y = divmod(self.data_count, self.per_page_count)26 if y:27 v += 128 return v29 30 def page_str(self, base_url):31 page_list = []32 33 if self.total_count < self.pager_num:34 start_index = 135 end_index = self.total_count + 136 else:37 if self.current_page <= (self.pager_num + 1) / 2:38 start_index = 139 end_index = self.pager_num + 140 else:41 start_index = self.current_page - (self.pager_num - 1) / 242 end_index = self.current_page + (self.pager_num + 1) / 243 if (self.current_page + (self.pager_num - 1) / 2) > self.total_count:44 end_index = self.total_count + 145 start_index = self.total_count - self.pager_num + 146 47 if self.current_page == 1:48 prev = '上一页 '49 else:50 prev = '上一页 ' % (base_url, self.current_page - 1,)51 page_list.append(prev)52 53 for i in range(int(start_index), int(end_index)):54 if i == self.current_page:55 temp = '%s ' % (base_url, i, i)56 else:57 temp = '%s ' % (base_url, i, i)58 page_list.append(temp)59 60 if self.current_page == self.total_count:61 nex = '下一页 '62 else:63 nex = '下一页 ' % (base_url, self.current_page + 1,)64 page_list.append(nex)65 66 # jump = """67 # GO68 # 74 # """ % (base_url,)75 #76 # page_list.append(jump)77 78 page_str = mark_safe("".join(page_list))79 80 return page_str
自定义分页组件
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