BBS那些事儿

目录

1 注册

# views.py
def register(request):
    form_obj = MyRegForm()
    # print(request.is_ajax())  # 判断当前请求是否是ajax请求
    if request.method == 'POST':
        # 定义一个与ajax回调函数交互的字典
        back_dic = {"code":1000,'msg':""}

        # 校验数据  用户名 密码 确认密码
        form_obj = MyRegForm(request.POST)
        if form_obj.is_valid():
            clean_data = form_obj.cleaned_data  # 用变量接收正确的结果 clean_data = {'username'   'password'  'confirm_password' 'email'}
            # 将确认密码键值对删除
            clean_data.pop('confirm_password')
            # 获取用户头像文件
            avatar_obj = request.FILES.get('avatar')
            # 判断用户头像是否为空
            if avatar_obj:
                # 添加到clean_data中
                clean_data['avatar'] = avatar_obj  # clean_data = {'username'  'password'  'email' 'avatar'}
            models.UserInfo.objects.create_user(**clean_data)
            back_dic['msg'] = '注册成功'
            back_dic['url'] = '/login/'
        else:
            back_dic['code'] = 2000
            back_dic['msg'] = form_obj.errors
        return JsonResponse(back_dic)
    return render(request,'register.html',locals())
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
    <link href="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
    <div class="row">
        <h2 class="text-center">注册页面</h2>
        <div class="col-md-8 col-md-offset-2">
            <form id="myform">
                {% csrf_token %}

                {% for form in form_obj %}
                    <div class="form-group">
                        <label for="{{ form.id_for_label }}">{{ form.label }}</label>
                        {{ form }}
                        <span style="color: red" class="pull-right"></span>
                    </div>
                {% endfor %}

                <div class="form-group">
                    <label for="id_avatar">头像
                        <img src="/static/img/头像1.jpg" alt="" width="200" style="margin-left: 10px" id="id_img">
                    </label>
                    <input type="file" name="myfile" id="id_avatar" style="display: none">
                </div>
                <input type="button" value="注册" class="btn btn-primary pull-right" id="id_submit">
            </form>
        </div>
    </div>
</div>

<script>
    $('#id_avatar').change(function () {
        // 1 先获取用户上传的头像文件
        var avatarFile = $(this)[0].files[0];
        // 2 利用文件阅读器对象
        var myFileReader = new FileReader();
        // 3 将文件交由阅读器对象读取
        myFileReader.readAsDataURL(avatarFile);
        // 4 修改img标签的src属性  等待文件阅读器对象读取文件之后再操作img标签
        myFileReader.onload = function(){
            $('#id_img').attr('src',myFileReader.result)
        }

    });

    // 点击按钮触发ajax提交动作
    $('#id_submit').on('click',function () {
        // 1 先生成一个内置对象 FormData
        var myFormData = new FormData();
        // 2 添加普通键值对
        {#console.log($('#myform').serializeArray())#}
        // 循环myform里的每一个对象
        $.each($('#myform').serializeArray(),function (index,obj) {
            myFormData.append(obj.name,obj.value)
        });
        // 3 添加文件数据
        myFormData.append('avatar',$('#id_avatar')[0].files[0]);
        // 4 发送数据
        $.ajax({
            url:'',
            type:'post',
            data:myFormData,
            // 两个关键性参数
            contentType:false,
            processData:false,

            success:function (data) {
                if (data.code===1000){
                    // 注册成功之后 应该跳转到后端返回过来的url
                    location.href = data.url
                }else{
                    $.each(data.msg,function(index,obj){
                        // 1 先手动拼接字段名所对应的input框的id值
                        var targetId = '#id_' + index;  // #id_username
                        // 2 利用id选择器查找标签  并且将div标签添加报错类
                        $(targetId).next().text(obj[0]).parent().addClass('has-error')
                    })
                }
            }
        })
    });
    $('input').focus(function () {
        // 移除span标签内部的文本  还需要移除div标签的class中has-error属性
        $(this).next().text('').parent().removeClass('has-error')
    })
</script>
</body>
</html>



2 登陆

def login(request):
    if request.method == 'POST':
        back_dic = {"code": 1000, "msg": ''}

        username = request.POST.get('username')
        password = request.POST.get('password')
        code = request.POST.get('code')
        print(username, password, code)
        if request.session.get('code').upper() == code.upper():
            auth_obj = auth.authenticate(username=username, password=password)
            if auth_obj:
                auth.login(request, auth_obj)
                back_dic['msg'] = '登陆成功'
                back_dic['url'] = '/home/'
                # return HttpResponse('登陆成功')
                return JsonResponse(back_dic)
            else:
                back_dic['code'] = '2000'
                back_dic['msg'] = "用户名或密码错误"
                return JsonResponse(back_dic)
        else:
            back_dic['code'] = '3000'
            back_dic['msg'] = '验证码错误'
            return JsonResponse(back_dic)
    return render(request, 'login.html')
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
    <link href="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">
    <script src="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
    <h2 class="text-center">登陆</h2>
    <div class="col-md-8 col-md-offset-2">
        <form id="login_form">
            {% csrf_token %}
        <div class="form-group">

            <label for="id_username">用户名</label>
            <input type="text" name="username" class="form-control" id="id_username">
        </div>
        <div class="form-group">
            <label for="id_password">密码</label>
            <input type="password" name="password" class="form-control" id="id_password">

        </div>
        <div class="form-group">
            <label for="id_code">验证码</label>
            <div class="row">
                <div class="col-md-6">
                    <input type="text" name="code" class="form-control" id="id_code">
                </div>
                <div class="col-md-6" >
                    <img src="/get_code/" alt="" id="id_img">
                </div>
            </div>
        </div>
        <br>
        <input type="button" value="登陆" class="btn btn-primary" id="id_btn">&nbsp <span style="color: red"></span>
        </form>
    </div>
</div>

<script>
    $('#id_img').click(function () {
       var oldSrc = $(this).attr('src');
       $(this).attr('src', oldSrc += '?')
    });


    $('#id_btn').click(function () {
        var $btn = $(this);
        $.ajax({
            url:'',
            type: 'post',
            data: {
                'username': $('#id_username').val(),
                'password': $('#id_password').val(),
                'csrfmiddlewaretoken': '{{ csrf_token }}',
                'code': $('#id_code').val(),
            },
            success: function (data) {
                if (data.code===1000){
                    location.href = data.url
                }else if (data.code===2000){
                    $btn.next().text(data.msg)
                }else {
                    $btn.next().text(data.msg)
                }
            }
        })
    })
</script>
</body>
</html>



3 图片验证码相关

url(r'^get_code/', views.get_code),

在登陆时,需要用到验证码

from PIL import Image, ImageDraw, ImageFont
"""
Image:  产生图片
ImageDraw:  在图片上写字
ImageFont:  控制图片上字体样式
"""
from io import BytesIO, StringIO
"""
BytesIO  能够临时帮你保存数据 获取的时候以二进制方式返回给你
StringIO   能够临时帮你保存数据 获取的时候以字符串方式返回给你
"""

import random
def get_random():
    return random.randint(0,255), random.randint(0, 255), random.randint(0, 255)

def get_code(request):
    # 在图片上写字
    img_obj = Image.new('RGB', (350, 35), get_random())
    # 产生针对该图片的画笔对象
    img_draw = ImageDraw.Draw(img_obj)
    # 产生一个字体样式对象
    img_font = ImageFont.truetype(r'app01\static\font\新叶念体.otf', 35)
    io_obj = BytesIO()

    code = ''
    for i in range(5):
        upper_str = chr(random.randint(65, 90))
        lower_str = chr(random.randint(97, 122))
        random_int = str(random.randint(0, 9))

        temp_str = random.choice([upper_str, lower_str, random_int])
        # 写到图片上
        img_draw.text((45+i*60, -2), temp_str, get_random(), font=img_font)

        code += temp_str
    print(code)

    img_obj.save(io_obj, 'png')
    # 将产生的随机验证码存储到session中  以便于后面的验证码校验
    request.session['code'] = code
    return HttpResponse(io_obj.getvalue())



4 首页相关,Django Admin后台录入数据

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

先创建一个超级管理员用户

createsuperuser
# 对密码有要求,不能太短

然后在 admin.py 文件下,导入模板,将所有表注册都管理员后台

# admin.py
from django.contrib import admin
from app01 import models
# Register your models here.

admin.site.register(models.UserInfo)
admin.site.register(models.Blog)
admin.site.register(models.Tag)
admin.site.register(models.Category)
admin.site.register(models.Article2Tag)
admin.site.register(models.Article)
admin.site.register(models.UpAndDown)
admin.site.register(models.Comment)

登陆admin后台后,可以看到所有的表是英文的,还带了s

BBS那些事儿

把表名变成中文操作:

在每个表添加一个Mate类

# models.py
class Meta:
 # verbose_name = '用户表'         # 带s
 verbose_name_plural = '用户表'        # 不带s 

BBS那些事儿

然后开始录入数据

录入的时候发现分类是对象,分不出来谁是谁

BBS那些事儿

前端展示对象,就相当于打印对象

可以利用__str__ 方法

class Tag(models.Model):
    name = models.CharField(max_length=32)
    blog = models.ForeignKey(to='Blog',null=True)
    class Meta:
        verbose_name_plural = 'Tag标签表'

    def __str__(self):
        return self.name

最后还要在用户表里给用户选择站点

选择后提交会报错,显示手机号不能为空

这个时候可以去UserInfo用户表中phone字段添加一个属性

blank=True

class UserInfo(AbstractUser):
    phone = models.BigIntegerField(null=True,blank=True)  
    # blank告诉后台管理该字段可以为空



5 注销功能

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

auth组件



6 修改密码

 url(r'^set_pwd/', views.set_password, name='_set_pwd'),

修改密码可以用一个弹框

@login_required()
def set_password(request):
    if request.is_ajax():
        back_dic = {"code": 1000, 'msg': ''}
        old_pwd = request.POST.get('old_pwd')
        new_pwd = request.POST.get('new_pwd')
        confirm_pwd = request.POST.get('confirm_pwd')
        print(old_pwd, new_pwd, confirm_pwd)
        if new_pwd == confirm_pwd:
            is_right = request.user.check_password(old_pwd)
            if is_right:
                request.user.set_password(confirm_pwd)
                request.user.save()
                back_dic['msg'] = '修改成功'
                back_dic['url'] = '/login/'
                # back_dic['url'] = reverse('_login')
                return JsonResponse(back_dic)
            else:
                back_dic['code'] = '2000'
                back_dic['msg'] = '原密码错误'
                return JsonResponse(back_dic)
        else:
            back_dic['code'] = '3000'
            back_dic['msg'] = '两次密码不一致'
            return JsonResponse(back_dic)



7 用户头像展示,media配置

网站所用的静态文件我们都默认放到了static文件夹下

而用户上传的文件也算静态资源,我们也应该找一个公共的地方专门存储用户上传的静态文件

media配置专门用来指定用户上传的静态文件存放路径

配置文件中只需要写下面一句配置即可

# settings.py
MEDIA_ROOT = os.path.join(BASE_DIR,'media')
# urls.py
from django.views.static import serve
from day60 import settings

# 固定写法
url(r'^media/(?P<path>.*)',serve,{"document_root":settings.MEDIA_ROOT})

因为在models里指定了头像放在avatar下,settings里有指定了media下,

所以用户上传的头像都会保存到/media/avatar



8 个人站点,个人侧边栏

url(r'^(?P<username>\w+)/$', views.site, name='_site')

可以利用ORM的聚合分组来查询,然后定义在前端,

聚合分组查询需要先导入模块

from django.db.models import Count, Max, Min, Sum, Avg
# views
# 查看当前用户的分类及每个分类下的文章数
category_list = models.Category.objects.filter(blog=blog).annotate(c=Count('article')).values('c', 'name')

# 查询当前用户的标签及每个标签下的文章数
tag_list = models.Tag.objects.filter(blog=blog).annotate(c=Count('article')).values('c', 'name')

年月日期分组,可以用官方提供的方法,注意导入模块

from django.db.models.functions import TruncMonth

-官方提供
from django.db.models.functions import TruncMonth
Article.objects
.annotate(month=TruncMonth('timestamp'))  # Truncate to month and add to select list 
.values('month')  # Group By month
.annotate(c=Count('id'))  # Select the count of the grouping
.values('month', 'c')  # (might be redundant, haven't tested) select month and count
# views
date_list = models.Article.objects.filter(blog=blog).annotate(month=TruncMonth('create_time')).values('month').annotate(c=Count('pk')).values('c', 'month')
# site.html
{% for date in date_list %}
<p><a href="#">
  {{ date.month|date:'Y年m月' }}({{ date.c }})
</a></p>
{% endfor %}

如果报错,在settings里调整市区,把 TIME_ZONE 改为 亚洲上海

# settings.py
TIME_ZONE = 'Asia/Shanghai'
USE_TZ = False



9 侧边栏筛选

url匹配优化,将三个url合并

# url(r'^(?P<username>\w+)/category/(\d+)/',views.site),
# url(r'^(?P<username>\w+)/tag/(\d+)/',views.site),
# url(r'^(?P<username>\w+)/archive/(.*)/',views.site),
url(r'^(?P<username>\w+)/(?P<condition>category|tag|archive)/(?P<param>.*)/', views.site),
 if kwargs:
     print(kwargs)   # {'condition': 'archive', 'param': '2022-03'}
     condition = kwargs.get('condition')  # category  tag  archive
     param = kwargs.get('param')  # 1   2     2019-11
     if condition == 'category':
         article_list = article_list.filter(category_id=param)
     elif condition == 'tag':
         article_list = article_list.filter(tags__pk=param)
     else:
         year, month = param.split('-')
         article_list = article_list.filter(create_time__year=year, create_time__month=month)
# 点击跳转
href="/{{ username }}/category/{{ category.pk }}/"
href="/{{ username }}/tag/{{ tag.pk }}/"
href="/{{ username }}/archive/{{ date.month|date:'Y-m' }}/"



10 文章详情页

文章详情页和个人站点的侧边栏一样,可以用模板导入

利用模板导入site.html 时,发现用到一些逻辑渲染出来的,并不能继承

这时需要用到自定义标签 inclusion_tag

url(r'^(?P<username>\w+)/article/(?P<article_id>\d+)/',views.article_detail)

在应用名下新建一个名字必须为templatetags的文件夹

在templatetags新建任意.py文件, my_tags.py

# my_tags.py 
from django.template import Library
register = Library()  # 注意变量名必须为register,不可改变

@register.inclusion_tag('left_menu.html', name='my_left')
def index(username):  # index函数里写 left_menu.html 里所需要的的数据
 username_obj = models.UserInfo.objects.filter(username=username).first()
 blog = username_obj.blog
 article_list = models.Article.objects.filter(blog=blog)
 # 查看当前用户的分类及每个分类下的文章数
 category_list = models.Category.objects.filter(blog=blog).annotate(c=Count('article')).values('c', 'name', 'pk')
 # 查询当前用户的标签及每个标签下的文章数
 tag_list = models.Tag.objects.filter(blog=blog).annotate(c=Count('article')).values('c', 'name', 'pk')
 date_list = models.Article.objects.filter(blog=blog).annotate(month=TruncMonth('create_time')).values(
     'month').annotate(c=Count('pk')).values('c', 'month')
 return locals()
# left_menu.html
# 将所需的数据代码复制过来

<div class="panel panel-primary">
<div class="panel-heading">
 <h3 class="panel-title text-center">文章分类</h3>
</div>
<div class="panel-body">
   {% for category in category_list %}
      <p><a href="/{{ username }}/category/{{ category.pk }}/">{{category.name}}
       ({{ category.c }})</a></p>
   {% endfor %}
</div>
</div>
<div class="panel panel-primary">
<div class="panel-heading">
 <h3 class="panel-title text-center">文章标签</h3>
</div>
<div class="panel-body">
   {% for tag in tag_list %}
    <p>   <a href="/{{ username }}/tag/{{ tag.pk }}/">{{ tag.name }}
       ({{ tag.c }})</a></p>
   {% endfor %}
</div>
</div>
<div class="panel panel-primary">
<div class="panel-heading">
 <h3 class="panel-title text-center">日期归档</h3>
</div>
<div class="panel-body">
   {% for date in date_list %}
   <p><a href="/{{ username }}/archive/{{ date.month|date:'Y-m' }}/">
       {{ date.month|date:'Y年m月' }}({{ date.c }})
   </a></p>
   {% endfor %}
</div>
</div>

重新建一个 base.html 文件当作基模板,把 site.html 里的代码复制进行,然后对需要用到的部分用模板导入

...
...
{% load my_tags %}            #把刚才写的文件load进来
{% my_left username %}        # 这个地方依然可以接受 urls 的有名分组关键字
...
...

而在article_detail文章详情页里,直接继承 base.html 模板,侧边栏不显示的问题就解决了

{% extends 'base.html' %}

{% block site %}
 
{% endblock %}

然后让文字在前端显示



11 点赞点踩

前端样式直接去复制。。。

怎么判断用户点了赞还是点了踩

给两个div添加一个相同的点击事件

然后用 hasClass('diggit')

如果点击的div有diggit属性就是ture, 没有就是false

从而可以判断,用户点的是赞还是踩


由于点赞点踩涉及业务逻辑比价多,所以新开了一个url

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

由于前段判断的布尔值是 字符串 类型的,所以要用json转成python数据类型格式

# views.py
from django.db.models import F
import json
def up_or_down(request):
    back_dic = {'code':1000, 'msg': ''}
    if request.is_ajax():
        article_id = request.POST.get('article_id')
        is_up = request.POST.get('is_up')
        is_up = json.loads(is_up)
        """
        1.判断当前用户是否登录
        2.当前文章是否是当前用户自己写的
        3.当前用户是否已经给当前文章点过赞或踩了
        4.操作数据库
            操作两张表
                数据库优化字段
        """
        if request.user.is_authenticated():
            article_obj = models.Article.objects.filter(pk=article_id).first()
            if not article_obj.blog.userinfo == request.user:
                is_click = models.UpAndDown.objects.filter(user=request.user, article=article_obj)
                if not is_click:
                    if is_up:
                        models.Article.objects.filter(pk=article_id).update(up_num=F('up_num')+1)
                        back_dic['msg'] = '点赞成功'
                    else:
                        models.Article.objects.filter(pk=article_id).update(down_num=F('down_num')+1)
                    models.UpAndDown.objects.create(user=request.user, article=article_obj, is_up=is_up)
                else:
                    back_dic['code'] = 2000
                    back_dic['msg'] = '您已经支持过'
            else:
                back_dic['code'] = 3000
                back_dic['msg'] = '不能给自己点赞'
        else:
            back_dic['code'] = 4000
            back_dic['msg'] = '请先<a href="/login/">登陆</a>'
        return JsonResponse(back_dic)
# article_detail.html  点赞点踩js代码
<script>
    $('.action').click(function () {
        var $divEle = $(this);
        $.ajax({
            url: '{% url 'updown' %}',
            type: 'post',
            data: {
                'article_id': {{ article_obj.pk }},
                'is_up': $(this).hasClass('diggit'),
                'csrfmiddlewaretoken': '{{ csrf_token }}'
            },
            success: function (data) {
                if (data.code===1000){
                    $('#digg_tips').text(data.msg);
                    $divEle.children().text(Number($divEle.children().text()) + 1);
                    {##  children() 返回被选元素旗下的所有直接子元素#}
                    {##  next() 获取 当前元素紧邻其后的 同辈元素#}
                }else{
                    $('#digg_tips').html(data.msg)  # 这个地方用html() 可以识别html代码
                }
            }
        })
    })
    </script>



12 文章评论

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

子评论,点击回复按钮之后

点击回复按钮发生了哪几件事

1.自动拼接处想要回复评论的那个人的人名 @人名\n

2.评论框自动聚焦

  • 子评论的内容需要做切割处理

  • 子评论的渲染

  • 提交完子评论之后页面不刷新 为何后续的评论都会变成子评论

// 评论样式代码
<div>
    <p>评论列表</p>
        <hr>
        <ul class="list-group">
        {% for comment in comment_list %}
        <li class="list-group-item">   <span>#{{ forloop.counter }}楼&nbsp;&nbsp;{{ comment.comment_time|date:'Y-m-d' }} <a href="/{{ comment.user }}/">&nbsp;&nbsp;{{ comment.user }}</a></span>
            <span class="pull-right"><a  class="reply" UserName="{{ comment.user }}" CommentId="{{ comment.pk }}">回复</a></span>
            <div>
                {% if comment.parent_id %}
{#                    拿子评论父评论的用户名 #}
                    <p>@{{ comment.parent.user.username }}</p>

                {% endif %}
                {{ comment.content }}
            </div>
        </li>
            <br>
        {% endfor %}

        </ul>

    </div>

        {% if request.user.is_authenticated %}
        <div>


        <p>发表评论</p>
        <p>
    昵称:<input type="text" id="tbCommentAuthor" class="author" disabled="disabled" size="50" value="{{ request.user.username }}">
        </p>
        <p>评论内容</p>
        <p>
            <textarea name="content" id="id_content" cols="30" rows="10"></textarea>
        </p>
        <p>
            <button class="btn btn-primary" id="id_comment">提交评论</button>&nbsp;&nbsp;<span></span>
        </p>
    </div>
        {% else %}
            <span ><a href="{% url '_login' %}">登录&nbsp;&nbsp;</a></span>
            <span><a href=" {% url '_register' %}">注册</a></span>
        {% endif %}
# 评论,子评论js代码
var ParentId = null;
    $('#id_comment').click(function () {
        var conTent = $('#id_content').val();
        var $btn = $(this);
        // 判断是否需要对conTent 进行处理
        if (ParentId){
            // 切割  获取第一个\n 对应的索引
            var indexN = conTent.indexOf('\n') + 1;  // 切片是顾头不顾尾的,所以索引需要加 1
            conTent = conTent.slice(indexN)  // 将indexN 之前的直接切除,只保留indexN后面的
        }
        $.ajax({
            url: '{% url "_comment" %}',
            type: 'post',
            data: {
                'article_id': {{ article_obj.pk }},
                'content': conTent,
                'csrfmiddlewaretoken': '{{ csrf_token }}',
                'parent_id': ParentId
            },
            success: function (data) {
                if (data.code===1000){
                    var Userinfo = '{{ request.user.username }}';
                    var Content = $('#id_content').val();
                    // 将内容临时渲染到ul标签内
                    var temp =`
                    <li class="list-group-item">
                        {#<span> <a href="/${Userinfo}/">${Userinfo}</a> </span>#}
                        <span><span class="glyphicon glyphicon-comment"></span><a href="/${Userinfo}/">${Userinfo}</a></span>
                        <div>
                            ${Content}
                        </div>
                    </li>
                    `;
                    $('.list-group').append(temp);
                    $('#id_content').val('');

                    $btn.next().text(data.msg);
                    ParentId = null;
                }
            }
        })
    });
    // 回复功能
    $('.reply').click(function () {
        var UserName = $(this).attr('UserName');
        var Comment_Id = $(this).attr('CommentId');
        var temp = '@' + UserName + '\n';
        $('#id_content').val(temp).focus();
        ParentId = Comment_Id;
    });
    </script>
def comment(request):
    back_dic = {'code': 1000, 'msg': ''}
    if request.is_ajax():
        article_id = request.POST.get('article_id')
        content = request.POST.get('content')
        parent_id = request.POST.get('parent_id')
        article_obj = models.Article.objects.filter(pk=article_id).first()
        print(type(article_obj))
        if request.user.is_authenticated():
            models.Article.objects.filter(pk=article_id).update(comment_num=F('comment_num')+1)
            # 如果是对象,直接用models字段存,不是就用数据库里的字段存
            models.Comment.objects.create(content=content, article_id=article_id, user=request.user, parent_id=parent_id)
            back_dic['msg'] = '评论成功'
            return JsonResponse(back_dic)



13 后台管理

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

后台管理可以在template 文件夹下单独再建立一个backend 后台管理文件夹

@login_required
def backend(request):
    article_list = models.Article.objects.filter(blog=request.user.blog).all()
  # 分页
    current_page = request.GET.get('page', 1)
    all_count = article_list.count()
    page_obj = Pagination(current_page=current_page, all_count=all_count, pager_count=9, per_page_num=3)
    page_queryset = article_list[page_obj.start:page_obj.end]
    return render(request, 'backend/backend.html', locals())

后台管理前端代码

# backend.html
{% extends 'backend/backend_base.html' %}

{% block article %}
<table class="table table-hover table-striped">
    <thead>
        <tr>
            <th>标题</th>
            <th>发布日期</th>
            <th>评论数</th>
            <th>点赞数</th>
            <th>操作</th>
            <th>操作</th>
        </tr>
    </thead>
    <tbody>
        {% for article in page_queryset %}
            <tr>
                <td><a href="/{{ request.user.username }}/article/{{ article.pk }}/">{{ article.title }}</a></td>
                <td>{{ article.create_time }}</td>
                <td>{{ article.comment_num }}</td>
                <td>{{ article.up_num }}</td>
                <td><a>编辑</a></td>
                <td><a>删除</a></td>
            </tr>
        {% endfor %}
    </tbody>
</table>
    <div class="pull-right">
        {{ page_obj.page_html|safe }}
    </div>
{% endblock %}

14 文章添加

KindEditor textarea 组件

文章添加问题

desc = soup.text[0:150]

如何截取150文字,XSS攻击

可以利用BeautifulSoup的 decompose() 方法删除script标签即可

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

add_article.htnl 前端页面

{% extends 'backend/backend_base.html' %}

{% block article %}
<p>添加文章</p>
    <form action="" method="post">
    {% csrf_token %}
    <p>标题</p>
    <p><input type="text" name="title" class="form-control"></p>
    <p>内容</p>
    <p>
        <textarea name="content" id="id_content"  cols="30" rows="10"></textarea>
    </p>
    <div>
    <p>分类</p>
    {% for foo in categoty_list %}
        {{ foo.name }}<input type="radio" name="category" value="{{ foo.pk }}">
    {% endfor %}

    </div>
    <div>
    <p>标签</p>
    {% for tag in tag_list %}
        {{ tag.name }}<input type="checkbox" name="tag" value="{{ tag.pk }}">
    {% endfor %}

    </div>
    <input type="submit" class="btn btn-primary">
    </form>
    <script charset="utf-8" src="/static/kindeditor-4.1.11-zh-CN/kindeditor/kindeditor-all-min.js"></script>
    <script>
            KindEditor.ready(function(K) {
                    window.editor = K.create('#id_content',{
                        width: '100%',
                        height: '450px',
                        resizeType: 1
                    });
            });
    </script>
{% endblock %}

views.py

@login_required
def add_article(request):
    if request.method == 'POST':
        title = request.POST.get('title')
        content = request.POST.get('content')
        category_id = request.POST.get('category')
        tag_list = request.POST.getlist('tag')
        # 先生成一个该模块的对象
        soup = BeautifulSoup(content, 'html.parser')
        for tag in soup.find_all():
            # 筛选出script标签直接删除
            if tag.name == 'script':
                tag.decompose()  # 删除该标签
        desc = soup.text[0:150]
        # 写入数据
        article_obj = models.Article.objects.create(title=title, desc=desc, content=str(soup), category_id=category_id, blog=request.user.blog)
        print(article_obj)
        # 手动操作文章与标签的第三张表
        b_list = []
        for tag_id in tag_list:
            b_list.append(models.Article2Tag(article=article_obj, tag_id=tag_id))
        models.Article2Tag.objects.bulk_create(b_list)
        return redirect(reverse('_backend'))
    categoty_list = models.Category.objects.filter(blog=request.user.blog)
    tag_list = models.Tag.objects.filter(blog=request.user.blog)

15 编辑器上传图片

url(r'^upload_image/', views.upload_image),
# views.py
import os
from day60 import settings
@login_required
def upload_image(request):
    back_dic = {'error': 0}
    if request.method == "POST":
        file_obj = request.FILES.get('imgFile')
        file_dir = os.path.join(settings.BASE_DIR, 'media', 'article_image')
        if not os.path.isdir(file_dir):
            os.mkdir(file_dir)
        file_path = os.path.join(file_dir, file_obj.name)
        with open(file_path, 'wb') as f:
            for chunk in file_obj.chunks():
                f.write(chunk)
        # // 成功时
        # {
        #     "error": 0,
        #     "url": "http://www.example.com/path/to/file.ext"
        # }
        # // 失败时
        # {
        #     "error": 1,
        #     "message": "错误信息"
        # }
        back_dic['url'] = f'/media/article_image/{file_obj.name}'
        return JsonResponse(back_dic)

需要在文章详情页添加以下代码

BBS那些事儿



16 修改头像

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

修改头像 和 注册的 上传头像 类似

// set_avatar.html
{% extends 'backend/backend_base.html' %}

{% block article %}

    <p>原头像
        <img src="/media/{{ request.user.avatar }}/" alt="">
    </p>

    <form action="" method="post" enctype="multipart/form-data">
    {% csrf_token %}
    <div class="form-group">
                    <label for="id_avatar">头像
                        <img src="/static/img/头像1.jpg" alt="" width="200" style="margin-left: 10px" id="id_img">
                    </label>
                    <input type="file" name="myfile" id="id_avatar" style="display: none">
                </div>
                <input type="submit" value="提交" class="btn btn-primary pull-right" id="id_submit">

    </form>


    <script>
    $('#id_avatar').change(function () {
        // 1 先获取用户上传的头像文件
        var avatarFile = $(this)[0].files[0];
        // 2 利用文件阅读器对象
        var myFileReader = new FileReader();
        // 3 将文件交由阅读器对象读取
        myFileReader.readAsDataURL(avatarFile);
        // 4 修改img标签的src属性  等待文件阅读器对象读取文件之后再操作img标签
        myFileReader.onload = function(){
            $('#id_img').attr('src',myFileReader.result)
        }

    });
    </script>
{% endblock %}
def set_avatar(request):
    if request.method == 'POST':
        avatar_obj = request.FILES.get('myfile')
        # models.UserInfo.objects.filter(pk=request.user.pk).update(avatar=avatar_obj)
        request.user.avatar = avatar_obj
        request.user.save()  # 更换头像可以直接用 request.user.save()方法
    return render(request, 'set_avatar.html', locals())
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