Django中分页功能的实现及封装与调用(超详细)

Posted 2021-05-15 跟着哈哥学大智若愚

在django开发过程中，实现前端页面的分页是一个基本且常用的功能！下面就同小编一起完成分页功能的实现及封装与调用。

一，在pycharm中创建django项目

小编默认看客朋友们都会创建，故不在赘述，若不熟悉，猛戳这里！

二，在mysql中创建库

create database pagination;

三，在settings.py中配置常用环境

import os

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.11/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'fp5b9^gk)l_+mgoh=0&%4o#m3c1ezj5274k$hu3n@sdn!ab!f='

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = ['*', ]

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app01.apps.App01Config',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'pagination.urls'

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',
            ],
        },
    },
]

WSGI_APPLICATION = 'pagination.wsgi.application'

# Database
# https://docs.djangoproject.com/en/1.11/ref/settings/#databases

DATABASES = {
    'default': {
        # 'ENGINE': 'django.db.backends.sqlite3',
        # 'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),

        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'pagination',
        'HOST': '127.0.0.1',
        'PORT': '3306',
        'USER': 'root',
        'PASSWORD': '201314',
    }
}

# Password validation
# https://docs.djangoproject.com/en/1.11/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]

# Internationalization
# https://docs.djangoproject.com/en/1.11/topics/i18n/

# LANGUAGE_CODE = 'en-us'
LANGUAGE_CODE = 'zh-hans'

# TIME_ZONE = 'UTC'
TIME_ZONE = 'Asia/shanghai'

USE_I18N = True

# USE_L10N = True
USE_L10N = False

USE_TZ = True

DATETIME_FORMAT = 'Y-m-d H:i:s'

# Static files (CSS, javascript, Images)
# https://docs.djangoproject.com/en/1.11/howto/static-files/

STATIC_URL = '/static/'

STATICFILES_DIRS = [
    os.path.join(BASE_DIR, 'static')
]

四，在models.py中创建表结构及数据库的迁移

models.py文件

from django.db import models

# Create your models here.


class Joke(models.Model):
    create_time = models.DateTimeField(auto_now_add=True, verbose_name='创建时间')
    content = models.CharField(max_length=512, verbose_name='内容')

在pycharm的Terminal中分别执行以下两条命令，进行数据库的迁移

python manage.py makemigrations  # 生成迁移文件

python manage.py migrate  # 迁移到数据库

五，连接数据库并添加一些用于分页的数据

小编习惯使用Navicat连接数据库，也可以使用pycharm专业版自带的可视化工具进行连接(若不熟悉，猛戳这里)！

5–>为添加数据，6–>刷新到数据库

六，将数据库的数据展示到前端页面

1， urls.py

from django.conf.urls import url
from django.contrib import admin
from app01 import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),

    url(r'^home/', views.home, name='home'),

]

2，views.py

from django.shortcuts import render
from app01 import models
from custom.paging import Paging

# Create your views here.

def home(request):
    all_jokes = models.Joke.objects.all()
    return render(request, 'home.html', locals())

3,在templates下创建home.html文件

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <title>个人博客模板</title>
    <meta name="keywords" content="个人博客模板"/>
    <meta name="description" content="个人博客模板"/>
    {% load static %}
    <link href="{% static 'home/css/styles.css' %}" rel="stylesheet">
    <link rel="stylesheet" href="{% static 'css/bootstrap.min.css' %}">
</head>
<body>
<header>
    <nav id="nav">
        <ul>
            <li><a href="#">网站首页</a></li>
            <li><a href="#">模板</a></li>
            <li><a href="#">关于我们</a></li>
            <li><a href="#">我们的故事</a></li>
            <li><a href="#">我们的蜜月</a></li>
            <li><a href="#">婚礼现场</a></li>
            <li><a href="#">婚纱摄影</a></li>
            <li><a href="#">我们的博客</a></li>
            <li><a href="#">联系我们</a></li>
        </ul>
        <script src="{% static 'home/js/silder.js' %}"></script><!--获取当前页导航 高亮显示标题-->
    </nav>
</header>
<div class="mainContent">
    <aside>
        <div class="avatar">
            <a href="#"><span>爱笑的眼睛</span></a>
        </div>
        <section class="topspaceinfo">
            <h1>执子之手，与子偕老</h1>
            <p>于千万人之中，我遇见了我所遇见的人....</p>
        </section>
        <div class="userinfo">
            <p class="q-fans"> 粉丝：<a href="#">520</a></p>
            <p class="btns"><a href="#">私信</a><a href="#">相册</a><a href="#">存档</a></p>
        </div>
        <section class="newpic">
            <h2>最新照片</h2>
            <ul>
                <li><a href="#"><img src="{% static 'home/images/01.jpg' %}"></a></li>
                <li><a href="#"><img src="{% static 'home/images/02.jpg' %}"></a></li>
                <li><a href="#"><img src="{% static 'home/images/03.jpg' %}"></a></li>
                <li><a href="#"><img src="{% static 'home/images/04.jpg' %}"></a></li>
                <li><a href="#"><img src="{% static 'home/images/05.jpg' %}"></a></li>
                <li><a href="#"><img src="{% static 'home/images/06.jpg' %}"></a></li>
                <li><a href="#"><img src="{% static 'home/images/07.jpg' %}"></a></li>
                <li><a href="#"><img src="{% static 'home/images/08.jpg' %}"></a></li>
            </ul>
        </section>
        <section class="taglist">
            <h2>全部标签</h2>
            <ul>
                <li><a href="#">青空</a></li>
                <li><a href="#">情感聊吧</a></li>
                <li><a href="#">study</a></li>
                <li><a href="#">青青唠叨</a></li>
            </ul>
        </section>
    </aside>
    <div class="blogitem">
        {% for joke in all_jokes %}
            <article>
                <h2 class="title"><a href="#">笑话>>{{ forloop.counter }}</a></h2>
                <ul class="text">

                    <p>上传时间：{{ joke.create_time }}</p>
                    <p class="textimg"><img src="{% static 'home/images/001.gif' %}"></p>
                    <p>{{ joke.content }}</p>
                </ul>
                <div class="textfoot">
                    <a href="#">阅读全文</a><a href="#">评论</a><a href="#">转载</a>
                </div>
            </article>
        {% endfor %}
    </div>

</div>
<footer>
    <div class="footavatar">
        <img src="{% static 'home/images/0003.jpg' %}" class="footphoto">
        <ul class="footinfo">
            <p class="fname"><a href="/dancesmile">爱笑的眼睛</a></p>
            <p class="finfo">性别：男 年龄：18岁</p>
            <p>现居：陕西西安以上是关于Django中分页功能的实现及封装与调用(超详细)的主要内容，如果未能解决你的问题，请参考以下文章
 
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