自定义分页组件

自定义

# pager.py

class Pagination(object):
    def __init__(self, totalCount, currentPage, perPageItemNum=10, maxPageNum=7):
        # 数据总个数
        self.total_count = totalCount
        # 当前页
        try:
            v = int(currentPage)
            if v <= 0:
                v = 1
            self.current_page = v
        except Exception as e:
            self.current_page = 1
        # 每页显示的行数
        self.per_page_item_num = perPageItemNum
        # 最多显示页面
        self.max_page_num = maxPageNum

    def start(self):
        return (self.current_page - 1) * self.per_page_item_num

    def end(self):
        return self.current_page * self.per_page_item_num

    @property
    def num_pages(self):
        """
        总页数
        :return:
        """
        # 666
        # 10
        a, b = divmod(self.total_count, self.per_page_item_num)
        if b == 0:
            return a
        return a + 1

    def pager_num_range(self):
        # self.num_pages()
        # self.num_pages
        # 当前页
        # self.current_page
        # 最多显示的页码数量 11
        # self.per_pager_num
        # 总页数
        # self.num_pages
        if self.num_pages < self.max_page_num:
            return range(1, self.num_pages + 1)
        # 总页数特别多 5
        part = int(self.max_page_num / 2)
        if self.current_page <= part:
            return range(1, self.max_page_num + 1)
        if (self.current_page + part) > self.num_pages:
            return range(self.num_pages - self.max_page_num + 1, self.num_pages + 1)
        return range(self.current_page - part, self.current_page + part + 1)

    def page_str(self):
        page_list = []

        first = "<li><a href='/index2.html?p=1'>首页</a></li>"
        page_list.append(first)

        if self.current_page == 1:
            prev = "<li><a href='#'>上一页</a></li>"
        else:
            prev = "<li><a href='/index2.html?p=%s'>上一页</a></li>" % (self.current_page - 1,)
        page_list.append(prev)
        for i in self.pager_num_range():
            if i == self.current_page:
                temp = "<li class='active'><a href='/index2.html?p=%s'>%s</a></li>" % (i, i)
            else:
                temp = "<li><a href='/index2.html?p=%s'>%s</a></li>" % (i, i)
            page_list.append(temp)

        if self.current_page == self.num_pages:
            nex = "<li><a href='#'>下一页</a></li>"
        else:
            nex = "<li><a href='/index2.html?p=%s'>下一页</a></li>" % (self.current_page + 1,)
        page_list.append(nex)

        last = "<li><a href='/index2.html?p=%s'>尾页</a></li>" % (self.num_pages,)
        page_list.append(last)

        return ''.join(page_list)

视图

USER_LIST = []
for i in range(1,666):
    temp = {'name':'root'+str(i), 'age':i} USER_LIST.append(temp) def index2(request): from app01.pager import Pagination current_page = request.GET.get('p') page_obj = Pagination(666,current_page) data_list = USER_LIST[page_obj.start():page_obj.end()] return render(request,'index2.html',{'data':data_list,'page_obj':page_obj})

模板

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="/static/bootstrap-3.3.7-dist/css/bootstrap.css" />
</head>
<body>
    <ul>
        {% for row in data %}
            <li>{{ row.name }}-{{ row.age }}</li>
        {% endfor %}
    </ul>
    {% for i in page_obj.pager_num_range %}
        <a href="/index2.html?p={{ i }}">{{ i }}</a>
    {% endfor %}
    <hr/>

    <ul class="pagination pagination-sm">
        {{ page_obj.page_str|safe }}
      </ul>
    <div style="height: 300px;"></div>
</body>
</html>

自定义

视图

模板

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