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实战--dango自带的分页(极简)

2019-11-02 21:17 1261 查看

注意,我将templates定义在项目的同级目录下:

在settings.py中配置

TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(BASE_DIR,'templates')],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]

urls.py

from django.urls import path
from . import views

app_name='person'
urlpatterns=[
path('test/', views.test),
path('test/<int:pn>',views.test,name='test'),
]

views.py

from django.shortcuts import render
from .models import Book
from django.core.paginator import  Paginator

def test(request,pn=1):
#获取所有的查询
book_obj=Book.objects.all()
#传给paginator,每页显示两条
paginator=Paginator(book_obj,2)
#pn是显示第几页,默认是第一页
page=paginator.page(pn)
#将page通过context传给前端
context={'page':page}
return render(request,'test/test.html',context=context)

models.py

class Book(models.Model):
id = models.AutoField(primary_key=True)
title = models.CharField(max_length=128,null=False)

def __str__(self):
return "book_title:{}".format(self.title)

 

 tempates/test/test.html

<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
li{
float: left;
list-style: none;
margin-left: 5px;
}
</style>
</head>
<body>
<div>
<div style="position: absolute;top: 35%;left: 40%;">
<table border="1">
<thread>
<tr>
<th>id</th>
<th>title</th>
</tr>
</thread>
<tbody>
{% for item in page %}
<tr>
<td width="120px">{{item.id}}</td>
<td width="120px">{{item.title}}</td>
</tr>
{% endfor %}
</tbody>
</table>
</div>
<!--底部分页按钮显示-->
<div style="position: absolute;top: 50%;left: 44%"
<nav aria-label="
3230
Page navigation">
<div class="pagination">
<ul class="pagination" >
{% if page.has_previous %}
<li><a href="/test/{{page.previous_page_number}}"   aria-label="Previous">
<span aria-hidden="true">&laquo;</span></a></li>
{% endif %}

{% for num in page.paginator.page_range%}
{%if pindex == page.number%}
<li><a href="">{{ num }}</a></li>
{%else%}
<li><a href="/test/{{num}}">{{ num }}</a></li>
{%endif%}
{% endfor %}

{% if page.has_next %}
<li><a href="{% url 'person:test' page.next_page_number %}" aria-label="Next">
<span aria-hidden="true">&raquo;</span></a></li>
{% endif %}
</ul>
</div>
</nav>
</div>
</body>
</html>

最终效果(不要在意css,不大美观,哈哈)

 

 在显示下网页源代码:

<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
li{
float: left;
list-style: none;
margin-left: 5px;
}
</style>
</head>
<body>
<div>
<div style="position: absolute;top: 35%;left: 40%;">
<table border="1">
<thread>
<tr>
<th>id</th>
<th>title</th>
</tr>
</thread>
<tbody>

<tr>
<td width="120px">3</td>
<td width="120px">java</td>
</tr>

<tr>
<td width="120px">6</td>
<td width="120px">zabbix从入门到精通</td>
</tr>

</tbody>
</table>
</div>
<!--底部分页按钮显示-->
<div style="position: absolute;top: 50%;left: 44%"
<nav aria-label="Page navigation">
<div class="pagination">
<ul class="pagination" >

<li><a href="/test/1"   aria-label="Previous">
<span aria-hidden="true">&laquo;</span></a></li>
<li><a href="/test/1">1</a></li>
<li><a href="/test/2">2</a></li>
<li><a href="/test/3">3</a></li>
<li><a href="/test/3" aria-label="Next">
<span aria-hidden="true">&raquo;</span></a></li>

</ul>
</div>
</nav>
</div>
</body>
</html>

总结:这是实现分页最简单的了,至于美观,可以结合bootstrap来进行美化。

技术总结:最基本的是Paginator里面的一些值(当然此处我并没有去尝试其他的,有兴趣的可以去搜下,也挺简单的)。然后其中的一个就是前端pn值如何通过url传值给后端,注意标蓝的地方。

学习不易,且学且珍惜!!!

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