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  • 搭建自己的博客(二十六):优化点赞功能,并添加模态登录框

    1、变化的部分:

    2、上代码:

    {# 引用模板 #}
    {% extends 'base.html' %}
    {% load staticfiles %}
    {% load comment_tags %}
    {% load likes_tags %}
    
    {% block header_extends %}
        <link rel="stylesheet" href="{% static 'blog/blog.css' %}">
        <link rel="stylesheet" href="{% static 'fontawesome-free-5.5.0-web/css/all.min.css' %}">
    
        {#  处理公式  #}
        <script src='https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js?config=TeX-MML-AM_CHTML'
                async></script>
        <script type="text/javascript" src="{% static "ckeditor/ckeditor-init.js" %}"></script>
        <script type="text/javascript" src="{% static "ckeditor/ckeditor/ckeditor.js" %}"></script>
    
    {% endblock %}
    
    
    {# 标题 #}
    {% block title %}
        {{ blog.title }}
    {% endblock %}
    
    {# 内容#}
    {% block content %}
        <div class="container">
            <div class="row">
                <div class="col-10 offset-1">
                    <ul class="blog-info-description">
                        <h3>{{ blog.title }}</h3>
                        <li>作者:{{ blog.author }}</li>
                        {# 时间过滤器让时间按照自己需要的格式过滤 #}
                        <li>发布日期:{{ blog.created_time|date:"Y-m-d H:i:s" }}</li>
                        <li>分类:
                            <a href="{% url 'blogs_with_type' blog.blog_type.pk %}">
                                {{ blog.blog_type }}
                            </a>
                        </li>
                        <li>阅读({{ blog.get_read_num }})</li>
                        <li>评论({% get_comment_count blog %})</li>
                    </ul>
                    <div class="blog-content">{{ blog.content|safe }}</div>
    
                    <div class="like"
                         onclick="likeChange(this,'{% get_content_type blog %}',{{ blog.pk }})">
                        <i class="far fa-thumbs-up {% get_like_status blog %}"></i>
                        <span class="liked-num">{% get_like_count blog %}</span>
                        <span>喜欢</span>
                    </div>
    
                    <p>上一篇:
                        {% if previous_blog %}
                            <a href="{% url 'blog_detail' previous_blog.pk %}">{{ previous_blog.title }}</a>
                        {% else %}
                            <span>没有了</span>
                        {% endif %}
                    </p>
                    <p>下一篇:
                        {% if next_blog %}
                            <a href="{% url 'blog_detail' next_blog.pk %}">{{ next_blog.title }}</a>
                        {% else %}
                            <span>没有了</span>
                        {% endif %}
                    </p>
                </div>
            </div>
            <div class="row">
                <div class="col-10 offset-1">
                    <div class="comment-area">
                        <h3 class="comment-area-title">提交评论</h3>
                        {% if user.is_authenticated %}
                            <form id="comment-form" action="{% url 'update_comment' %}" method="post"
                                  style="overflow: hidden">
                                {% csrf_token %}
                                <label for="form-control">{{ user.username }},欢迎评论~</label>
                                <div id="reply-content-container" style="display: none;">
                                    <p id="reply_title">回复:</p>
                                    <div id="reply-content">
    
                                    </div>
                                </div>
                                {% get_comment_form blog as comment_form %}
                                {% for field in comment_form %}
                                    {{ field }}
                                {% endfor %}
                                <span id="comment-error" class="text-danger float-left"></span>
                                <input type="submit" value="评论" class="btn btn-primary float-right">
                            </form>
                        {% else %}
                            您尚未登录,登录之后方可评论
                            {# 提交登录的时候带上从哪里访问的路径 #}
                            <a class="btn btn-primary" href="{% url 'login' %}?from={{ request.get_full_path }}">登录</a>
                            <span> or </span>
                            <a class="btn-danger btn" href="{% url 'register' %}?from={{ request.get_full_path }}">注册</a>
                        {% endif %}
                    </div>
                    <div class="-comment-area">
                        <h3 class="comment-area-title">评论列表</h3>
                        <div id="comment-list">
                            {% get_comment_list blog as comments %}
                            {% for comment in comments %}
                                <div id="root-{{ comment.pk }}" class="comment">
                                    <span>{{ comment.user.username }}</span>
                                    <span>{{ comment.comment_time|date:"Y-m-d H:i:s" }}</span>
                                    <div id="comment-{{ comment.pk }}">{{ comment.text|safe }}</div>
                                    {# 点赞 #}
                                    <div class="like"
                                         onclick="likeChange(this,'{% get_content_type comment %}',{{ comment.pk }})">
                                        <i class="far fa-thumbs-up {% get_like_status comment %}"></i>
                                        <span class="liked-num">{% get_like_count comment %}</span>
                                    </div>
    
                                    <a href="javascript:reply({{ comment.pk }})">回复</a>
    
                                    {% for reply in comment.root_comment.all %}
                                        <div class="reply">
                                            <span>{{ reply.user.username }}</span>
                                            <span>{{ reply.comment_time|date:"Y-m-d H:i:s" }}</span>
                                            <span>回复:</span><span>{{ reply.reply_to.username }}</span>
                                            <div id="comment-{{ reply.pk }}">{{ reply.text|safe }}</div>
                                            {# 点赞 #}
                                            <div class="like"
                                                 onclick="likeChange(this,'{% get_content_type reply %}',{{ reply.pk }})">
                                                <i class="far fa-thumbs-up {% get_like_status reply %}"></i>
                                                <span class="liked-num">{% get_like_count reply %}</span>
                                            </div>
    
                                            <a href="javascript:reply({{ reply.pk }})">回复</a>
                                        </div>
                                    {% endfor %}
                                </div>
                            {% empty %}
                                <span id="no-comment">暂无评论</span>
                            {% endfor %}
                        </div>
                    </div>
                </div>
            </div>
    
    
            <!-- Modal 登录模态框 -->
            <div class="modal fade" id="login_model" tabindex="-1" role="dialog"
                 aria-labelledby="exampleModalCenterTitle" aria-hidden="true">
                <div class="modal-dialog modal-dialog-centered" role="document">
                    <div class="modal-content">
                        <form id="login_model_form" action="" method="post">
                            <div class="modal-header">
                                <h5 class="modal-title">登录</h5>
                                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                                    <span aria-hidden="true">&times;</span>
                                </button>
                            </div>
                            <div class="modal-body">
                                {% csrf_token %}
                                {% for field in login_form %}
                                    <label for="{{ field.id_for_label }}">{{ field.label }}</label>
                                    {{ field }}
                                {% endfor %}
                                <span id="login_model_tip" class="text-danger"></span>
                            </div>
                            <div class="modal-footer">
                                <button type="submit" class="btn btn-primary">登录</button>
                                <button type="button" class="btn btn-secondary" data-dismiss="modal">关闭</button>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
        </div>
    {% endblock %}
    
    {% block js %}
        <script>
            // 处理点赞
            function likeChange(obj, content_type, object_id) {
                let is_like = obj.getElementsByClassName('active').length === 0;
    
    
                $.ajax({
                    url: "{% url 'like_change' %}",
                    type: 'GET',
                    data: {
                        content_type: content_type,
                        object_id: object_id,
                        is_like: is_like,
                    },
                    cache: false,
                    success: function (data) {
                        console.log(data);
                        if (data['status'] === 'SUCCESS') {
                            // 更新点赞状态
                            let element = $(obj.getElementsByClassName('fa-thumbs-up'));
                            if (is_like) {
                                element.addClass('active');
                            } else {
                                element.removeClass('active');
                            }
                            // 更新点赞数量
                            let like_num = $(obj.getElementsByClassName('liked-num'));
                            like_num.text(data['liked_num']);
    
                        } else {
    
                            if (data['code'] === 400) {
                                $('#login_model').modal('show');
                            } else {
                                alert(data['msg']);
                            }
                        }
                    },
                    error: function (xhr) {
                        console.log(xhr);
                    }
                });
            }
    
            // 处理回复
            function reply(reply_comment_id) {
                $('#reply_comment_id').val(reply_comment_id);
                let html = $('#comment-' + reply_comment_id).html();
    
                $('#reply-content').html(html);
                $('#reply-content-container').show();  // 显示内容
    
    
                // 滚动富文本编辑器
                $('html').animate({scrollTop: $('#comment-form').offset().top - 60}, 300, function () {
                    // 动画执行完毕后执行的方法
                    // 让富文本编辑器获得焦点
                    CKEDITOR.instances['id_text'].focus();
                });
            }
    
            function numFormat(num) {
                return ('00' + num).substr(-2);
            }
    
            function timeFormat(timestamp) {
                let datetime = new Date(timestamp * 1000);
                let year = datetime.getFullYear();
                let month = numFormat(datetime.getMonth() + 1);
                let day = numFormat(datetime.getDate());
                let hour = numFormat(datetime.getHours());
                let minute = numFormat(datetime.getMinutes());
                let second = numFormat(datetime.getSeconds());
                return `${year}-${month}-${day} ${hour}:${minute}:${second}`
            }
    
            // 提交评论
            $('#comment-form').submit(function () {
                // 获取错误框
                let comment_error = $('#comment-error');
                comment_error.text('');
    
                // 更新数据到textarea
                CKEDITOR.instances['id_text'].updateElement();
                let comment_text = CKEDITOR.instances['id_text'].document.getBody().getText().trim();
                // 判断是否为空
                if (!(CKEDITOR.instances['id_text'].document.getBody().find('img')['$'].length !== 0 || comment_text !== '')) {
                    // 显示错误信息
                    comment_error.text('评论内容不能为空');
                    return false;
                }
                //异步提交
                $.ajax({
                    url: "{% url 'update_comment' %}",
                    type: 'POST',
                    data: $(this).serialize(),// 序列化表单值
                    cache: false, // 关闭缓存
                    success: function (data) {
                        let reply_comment = $('#reply_comment_id');
                        if (data['status'] === 'SUCCESS') {
                            console.log(data);
                            //  插入数据
                            //  es6写法
                            let like_html = `<div class="like"
                                         onclick="likeChange(this,'${data['content_type']}',${data["pk"]})">
                                        <i class="far fa-thumbs-up"></i>
                                        <span class="liked-num">0</span>
                                    </div>`;
                            if (reply_comment.val() === '0') {
                                // 插入评论
                                let comment_html = `<div id="root-${data["pk"]}" class="comment">
                                    <span>${data["username"]}</span>
                                    <span>${timeFormat(data["comment_time"])}</span>
                                    <div id="comment-${data["pk"]}">${data["text"]}</div>
                                    ${like_html}
                                    <a href="javascript:reply(${data["pk"]})">回复</a>
                                </div>`;
    
                                $('#comment-list').prepend(comment_html);
    
                            } else {
                                // 插入回复
    
                                let reply_html = `<div class="reply">
                                            <span>${data["username"]}</span>
                                            <span>${timeFormat(data["comment_time"])}</span>
                                            <span>回复:</span><span>${data["reply_to"]}</span>
                                            <div id="comment-${data["pk"]}">${data["text"]}</div>
                                            ${like_html}
                                            <a href="javascript:reply(${data["pk"]})">回复</a>
                                        </div>`;
                                $('#root-' + data['root_pk']).append(reply_html);
    
                            }
    
                            //  清空编辑框的内容
                            CKEDITOR.instances['id_text'].setData('');
                            $('#reply-content-container').hide(); // 回复完隐藏掉要回复的内容
                            reply_comment.val('0'); // 将回复标志重置0
                            $('#no-comment').remove(); // 如果有没回复标志,清除掉5
                            comment_error.text('评论成功');
                        } else {
                            // 显示错误信息
                            comment_error.text(data['message'])
                        }
                    },
                    error: function (xhr) {
                        console.log(xhr);
                    }
                });
                return false;
            });
    
            $('#login_model_form').submit(function (event) {
                $('#login_model_tip').text('');
                event.preventDefault(); // 阻止原事件提交
                $.ajax({
                    url: '{% url 'login_for_model' %}',
                    type: 'POST',
                    data: $(this).serialize(),
                    cache: false,
                    success: function (data) {
                        if (data['status'] === 'SUCCESS') {
                            window.location.reload();
                        } else {
                            $('#login_model_tip').text('用户名或密码不正确')
                        }
                    }
                });
            })
        </script>
    
        <script>
            $(".nav-blog").addClass("active").siblings().removeClass("active");
        </script>
    {% endblock %}
    blog_detail.html
    from django.shortcuts import render, get_object_or_404
    from django.core.paginator import Paginator
    from django.conf import settings
    from django.db.models import Count
    from read_statistics.utils import read_statistics_once_read
    from .models import Blog, BlogType
    from myblog.forms import LoginForm
    
    
    # 分页部分公共代码
    def blog_list_common_data(requests, blogs_all_list):
        paginator = Paginator(blogs_all_list, settings.EACH_PAGE_BLOGS_NUMBER)  # 第一个参数是全部内容,第二个是每页多少
        page_num = requests.GET.get('page', 1)  # 获取url的页面参数(get请求)
        page_of_blogs = paginator.get_page(page_num)  # 从分页器中获取指定页码的内容
    
        current_page_num = page_of_blogs.number  # 获取当前页
        all_pages = paginator.num_pages
        if all_pages < 5:
            page_range = list(
                range(max(current_page_num - 2, 1),
                      min(all_pages + 1, current_page_num + 3)))  # 获取需要显示的页码 并且剔除不符合条件的页码
        else:
            if current_page_num <= 2:
                page_range = range(1, 5 + 1)
            elif current_page_num >= all_pages - 2:
                page_range = range(all_pages - 4, paginator.num_pages + 1)
            else:
                page_range = list(
                    range(max(current_page_num - 2, 1),
                          min(all_pages + 1, current_page_num + 3)))  # 获取需要显示的页码 并且剔除不符合条件的页码
    
        blog_dates = Blog.objects.dates('created_time', 'month', order='DESC')
        blog_dates_dict = {}
        for blog_date in blog_dates:
            blog_count = Blog.objects.filter(created_time__year=blog_date.year, created_time__month=blog_date.month).count()
            blog_dates_dict = {
                blog_date: blog_count
            }
    
        return {
            'blogs': page_of_blogs.object_list,
            'page_of_blogs': page_of_blogs,
            'blog_types': BlogType.objects.annotate(blog_count=Count('blog')),  # 添加查询并添加字段
            'page_range': page_range,
            'blog_dates': blog_dates_dict
        }
    
    
    # 博客列表
    def blog_list(requests):
        blogs_all_list = Blog.objects.all()  # 获取全部博客
        context = blog_list_common_data(requests, blogs_all_list)
        return render(requests, 'blog/blog_list.html', context)
    
    
    # 根据类型筛选
    def blogs_with_type(requests, blog_type_pk):
        blog_type = get_object_or_404(BlogType, pk=blog_type_pk)
        blogs_all_list = Blog.objects.filter(blog_type=blog_type)  # 获取全部博客
        context = blog_list_common_data(requests, blogs_all_list)
        context['blog_type'] = blog_type
        return render(requests, 'blog/blog_with_type.html', context)
    
    
    # 根据日期筛选
    def blogs_with_date(requests, year, month):
        blogs_all_list = Blog.objects.filter(created_time__year=year, created_time__month=month)  # 获取全部博客
        context = blog_list_common_data(requests, blogs_all_list)
        context['blogs_with_date'] = '{}年{}日'.format(year, month)
        return render(requests, 'blog/blog_with_date.html', context)
    
    
    # 博客详情
    def blog_detail(requests, blog_pk):
        blog = get_object_or_404(Blog, pk=blog_pk)
        obj_key = read_statistics_once_read(requests, blog)
    
        context = {
            'blog': blog,
            'previous_blog': Blog.objects.filter(created_time__gt=blog.created_time).last(),
            'next_blog': Blog.objects.filter(created_time__lt=blog.created_time).first(),
            'login_form': LoginForm(),
        }
        response = render(requests, 'blog/blog_detail.html', context)
        response.set_cookie(obj_key, 'true')
    
        return response
    blog下的views.py
    from django.http import JsonResponse
    from django.contrib.contenttypes.models import ContentType
    from .models import Comment
    from .forms import CommentForm
    
    
    def update_commit(requests):
        comment_form = CommentForm(requests.POST, user=requests.user)
        if comment_form.is_valid():
            comment = Comment()
            comment.user = comment_form.cleaned_data['user']
            comment.text = comment_form.cleaned_data['text']
            comment.content_object = comment_form.cleaned_data['content_object']
    
            parent = comment_form.cleaned_data['parent']
            if parent is not None:
                comment.root = parent.root if parent.root is not None else parent
                comment.parent = parent
                comment.reply_to = parent.user
            comment.save()
            # 返回数据
            data = {
                'status': 'SUCCESS',
                'username': comment.user.username,
                'comment_time': comment.comment_time.timestamp(),  # 返回时间戳
                'text': comment.text.strip(),
                'reply_to': comment.reply_to.username if parent is not None else '',
                'pk': comment.pk,
                'root_pk': comment.root.pk if comment.root is not None else '',
                'content_type': ContentType.objects.get_for_model(comment).model,
            }
    
        else:
            data = {
                'status': 'ERROR',
                'message': list(comment_form.errors.values())[0][0],
            }
        return JsonResponse(data)
    comment下的views.py
    """myblog URL Configuration
    
    The `urlpatterns` list routes URLs to views. For more information please see:
        https://docs.djangoproject.com/en/2.1/topics/http/urls/
    Examples:
    Function views
        1. Add an import:  from my_app import views
        2. Add a URL to urlpatterns:  path('', views.home, name='home')
    Class-based views
        1. Add an import:  from other_app.views import Home
        2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
    Including another URLconf
        1. Import the include() function: from django.urls import include, path
        2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
    """
    from django.contrib import admin
    from django.urls import path, include
    from django.conf import settings
    from django.conf.urls.static import static
    from . import views
    
    urlpatterns = [
        path('', views.home, name='home'),  # 主页路径
        path('admin/', admin.site.urls),
        path('ckeditor', include('ckeditor_uploader.urls')),  # 配置上传url
        path('blog/', include('blog.urls')),  # 博客app路径
        path('comment/', include('comment.urls')),  # 博客app路径
        path('likes/', include('likes.urls')),  # 博客app路径
        path('login/', views.login, name='login'),  # 登录
        path('login_for_model/', views.login_for_model, name='login_for_model'),  # 登录
        path('register/', views.register, name='register'),  # 登录
    ]
    
    # 设置ckeditor的上传
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
    urls.py
    # -*- coding: utf-8 -*-
    # @Time    : 18-11-7 下午4:12
    # @Author  : Felix Wang
    
    from django.shortcuts import render, redirect
    from django.http import JsonResponse
    from django.contrib.contenttypes.models import ContentType
    from django.contrib import auth
    from django.contrib.auth.models import User
    from django.urls import reverse
    from read_statistics.utils import get_seven_days_read_data, get_x_days_hot_data
    from blog.models import Blog
    from .forms import LoginForm, RegisterForm
    
    
    def home(requests):
        blog_content_type = ContentType.objects.get_for_model(Blog)
        dates, read_nums = get_seven_days_read_data(blog_content_type)
    
        context = {
            'read_nums': read_nums,
            'dates': dates,
            'today_hot_data': get_x_days_hot_data(0),  # 获取今日热门
            'yesterday_hot_data': get_x_days_hot_data(1),  # 获取昨日热门
            'seven_days_hot_data': get_x_days_hot_data(7),  # 获取周热门
            'one_month_hot_data': get_x_days_hot_data(30),  # 获取月热门
        }
        return render(requests, 'home.html', context)
    
    
    def login(requests):
        # 如果是form表单提交验证登录
        if requests.method == 'POST':
            login_form = LoginForm(requests.POST)
            if login_form.is_valid():  # 验证是否通过
                # 因为在form表单验证过了,所以不用自己再验证
                user = login_form.cleaned_data.get('user')
                auth.login(requests, user)
                return redirect(requests.GET.get('from', reverse('home')))
            else:
                login_form.add_error(None, '用户名或密码不正确')
        else:
            login_form = LoginForm()
        context = {
            'login_form': login_form,
        }
        return render(requests, 'login.html', context)
    
    
    def login_for_model(requests):
        login_form = LoginForm(requests.POST)
    
        # 如果是form表单提交验证登录
        if login_form.is_valid():  # 验证是否通过
            # 因为在form表单验证过了,所以不用自己再验证
            user = login_form.cleaned_data.get('user')
            auth.login(requests, user)
    
            data = {
                'status': 'SUCCESS',
            }
        else:
            data = {
                'status': 'ERROR',
            }
        return JsonResponse(data)
    
    
    def register(requests):
        if requests.method == 'POST':
            reg_form = RegisterForm(requests.POST)
            if reg_form.is_valid():
                username = reg_form.cleaned_data['username']
                email = reg_form.cleaned_data['email']
                password = reg_form.cleaned_data['password']
    
                # 创建用户
                user = User.objects.create_user(username=username, email=email, password=password)
                user.save()
    
                # 登录用户
                user = auth.authenticate(username=username, password=password)
                auth.login(requests, user)
                # 登录之后跳转
                return redirect(requests.GET.get('from', reverse('home')))
        else:
            reg_form = RegisterForm()
    
        context = {
            'reg_form': reg_form,
        }
        return render(requests, 'register.html', context)
    myblog下的views.py
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  • 原文地址:https://www.cnblogs.com/felixwang2/p/10014953.html
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