Flask pagination of the data with the paginate

flask with paginate data paging can achieve the effect, first comb of knowledge paginate.

1.paginate usage

the paginate (Page, per_page, error_out = True)
>>> Page Pages
several >>> per_page displayed per page
>>> error_out whether to print an error message

2.paginate property

a) paginate.page Pages

b) paginate.pages Pages

c) paginate.total total number of data

d) paginate.has_prev returns a Boolean value whether there Previous

e) paginate.has_next whether there is a next returns a Boolean value

f) paginate.iter_pages () returns a list of all the page numbers of [1, 2, 3, 4]

g) paginate (page, per_page, error_out) .items returns this page of all the data

---

Examples

All student information queries, data per page 2, and page through Previous, Next Jump page.

view a)

@stu.route('/stupage/') def stu_page(): page = int(request.args.get('page', 1)) per_page = int(request.args.get('per_page', 2)) paginate = Student.query.order_by('-s_id').paginate(page, per_page, error_out=False) stus = paginate.items return render_template('stupage.html', paginate=paginate, stus=stus) 

b) html page parsing data

{% extends 'base_main.html' %}

{% block title %}
    分页显示学生信息
{% endblock %}

{% block content %}
    <h2>学生信息</h2> {% for stu in stus %} 学生编号：{{ stu.s_id }}<br> 学生姓名：{{ stu.s_name }}<br> 学生年龄：{{ stu.s_age }}<br> <br> {% endfor %} 当前页数：{{ paginate.page }} 总页数：{{ paginate.pages }} 一共有{{ paginate.total }}条数据 <br> {% if paginate.has_prev %} <a href="/stu/stupage/?page={{ paginate.prev_num }}">上一页</a> {% endif %} 页码： {% for i in paginate.iter_pages() %} <a href="/stu/stupage/?page={{ i }}">{{ i }}</a> {% endfor %} {% if paginate.has_next %} <a href="/stu/stupage/?page={{ paginate.next_num }}">下一页</a> {% endif %} {% endblock %} 

>>> Note the page a link address, need to pass parameters

 

c) access request

>>> first visit, per page parameters, automatically assigned to page 1, and the current number of pages per page Previous

 Click Next >>> 

 

>>> When the jump to the last page, the link will not be displayed on the next page