flask 分页 初学

 html 

{% if r_dict.currentPage == 1 %}
    <center>
    当前为第一页&nbsp;&nbsp;
    1&nbsp;&nbsp;
{#        {% n = r_dict.current+5 %}#}
{#    {{ n = r_dict.current + 5 }}#}
{#    {% for i in range(2,6) %}#}
    {% for i in range(r_dict.nextPage,r_dict.bindexofpage) %}
        <a href="/?page={{ i }}">{{ i }}</a>
    {% endfor %}
    <a href="/?page={{ r_dict.nextPage }}">下一页</a>
    <a href="/?page={{ r_dict.total_page }}">末页</a>
    </center>
{% elif r_dict.currentPage == r_dict.total_page%}
    <center>
    <a href="/?page=1">首页</a>
        {% for i in range(r_dict.pindexofpage,r_dict.bindexofpage) %}
        <a href="/?page={{ i }}">{{ i }}</a>
        {% endfor %}
        {{ r_dict.currentPage }}
{#        {% for i in range(r_dict.nextpage,r_dict.bindexofpage) %}#}
{#            <a href="/?page={{ i }}">{{ i }}</a>#}
{#        {% endfor %}#}
    <a href="/?page={{ r_dict.prePage }}">上一页</a>
    当前为最后一页
    </center>
{% else %}
    <center>
    <a href="/?page=1">首页</a>
    <a href="/?page={{ r_dict.prePage }}">上一页</a>
        {% for i in range(r_dict.pindexofpage,r_dict.currentPage) %}
        <a href="/?page={{ i }}">{{ i }}</a>
        {% endfor %}
        {{ r_dict.currentPage }}
        {% for i in range(r_dict.nextPage,r_dict.bindexofpage) %}
          <a href="/?page={{ i }}">{{ i }}</a>
        {% endfor %}
    <a href="/?page={{ r_dict.nextPage }}">下一页</a>
    <a href="/?page={{ r_dict.total_page }}">末页</a>
    </center>
{% endif %}




views

@main.route(‘/‘)
def list():
    page = int(request.args.get(‘page‘, ‘1‘))  # 这是get过来page的值，如果为空，就给默认值1
    POSTS_PER_PAGE = 6  # 定义显示多少条数据和数据库里返回的数据条数
    if page < 1:  # 因为我们返回的page值，不能小于1
        page = 1  # 当小于1时，我们就重新赋值等于1
    PRE_PAGE = (page - 1) * POSTS_PER_PAGE
    END_PAGE = page * POSTS_PER_PAGE
    prePage = page - 1
    currentPage = page
    nextPage = page + 1
    # paginate = OrderInfo.query.order_by(desc(OrderInfo.order_id))[PRE_PAGE:END_PAGE]
    paginate = OrderInfo.query.order_by(desc(OrderInfo.order_id)).paginate(page, POSTS_PER_PAGE, False)

    ######以上是判断，.order_by(desc(OrderInfo.order_id))这个就是数据反向排序#############
    all_datas = paginate.items  # 取出需要显示的数据

    total_count = OrderInfo.query.count()
    total_page = (total_count + 1) / POSTS_PER_PAGE
    # total = paginate.total  # 数据总条数
    # total = (total+1) / 10.0  # 页数的定义
    # total = int(math.ceil(total))  # 取整进一

    pindexofpage = 1
    bindexofpage = 1
    if currentPage - 4 > 0:
        pindexofpage = currentPage - 4
    if currentPage + 5 > total_page:
        bindexofpage = total_page
    else:
        bindexofpage = currentPage + 6
    # bindexofpage = bindexofpage + 1
    return render_template(‘index.html‘, r_dict=locals(), )  # 渲染数据

flask 分页 初学

原文：http://www.cnblogs.com/python5124/p/5035275.html