Django+Xadmin打造在线教育系统(四)

完成授课机构的功能

模板继承

在templates目录下，新建base.html,剪切org-list.html内容到里面

编写org-list.html内容
继承base.html,将里面的面包屑和内容拷贝到org-list.html中

配置路由

    # 课程机构首页url
    path('org_list/', OrgView.as_view(), name="org_list"),

这里需要修改一下models

# organization/models.py
class CourseOrg(models.Model):
    ORG_CHOICES = (
        ("pxjg", u"培训机构"),
        ("gx", u"高校"),
        ("gr", u"个人"),
    )

# 添加字段
 category = models.CharField(max_length=20, choices=ORG_CHOICES, verbose_name="机构类别", default="pxjg")

修改了models之后做数据库的变动:

makemigrations organization
migrate organization

在项目目录下面新建一个目录media，用来存放上传的图片
setting中要配置我们把文件存放在哪个根目录之下

# 设置我们上传文件的路径

MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')

在后台自行添加教育机构和城市

添加完数据后进行逻辑代码的编写

class OrgView(View):
    '''课程机构'''
    def get(self,request):
        # 取出所有课程机构
        all_orgs = CourseOrg.objects.all()
        org_onums = all_orgs.count()
        # 取出所有城市
        all_citys = CityDict.objects.all()
        return render(request, "org-list.html", {
            "all_orgs": all_orgs,
            "all_citys": all_citys,
            'org_onums':org_onums,
        })

数据填充

打开org-list.html进行数据的填充

这里只保留一个dl标签即可,其他的数据自行填充
这里说一下MEDIA_URL
数据库中存储的图片路径时没有/media/前缀的

如果想要使用MEDIA_RUL需要在设置中添加media处理器

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',
                #添加图片处理器，为了在课程列表中前面加上MEDIA_URL
                'django.template.context_processors.media',
            ],
        },
    },
]

然后还需要配url

from django.views.static import serve

from MxOnline.settings import MEDIA_ROOT

# 处理图片显示的url,使用Django自带serve,传入参数告诉它去哪个路径找，我们有配置好的路径MEDIAROOT
re_path(r'^media/(?P<path>.*)', serve, {"document_root": MEDIA_ROOT })

列表分页功能

这里不使用Django内置的由分页模块,而是使用插件django-pure-pagination

pip install django-pure-pagination

进行settings的配置

INSTALLED_APPS = (
    ...
    'pure_pagination',
)

PAGINATION_SETTINGS = {
    'PAGE_RANGE_DISPLAYED': 10,
    'MARGIN_PAGES_DISPLAYED': 2,
    'SHOW_FIRST_PAGE_WHEN_INVALID': True,
}

这里参考官方的例子进行配置

from pure_pagination import Paginator, EmptyPage, PageNotAnInteger
class OrgView(View):
    def get(self,request):
        # 查找到所有的课程机构
        all_orgs = CourseOrg.objects.all()
        # 总共有多少家机构使用count进行统计
        org_nums = all_orgs.count()
        # 取出所有的城市
        all_city = CityDict.objects.all()
        # 对课程机构进行分页
        # 尝试获取前台get请求传递过来的page参数
        # 如果是不合法的配置参数默认返回第一页
        try:
            page = request.GET.get('page', 1)
        except PageNotAnInteger:
            page = 1
        # 这里指从allorg中取五个出来，每页显示5个
        p = Paginator(all_orgs, 5, request=request)
        orgs = p.page(page)

        return render(request, "org-list.html", {
            "all_orgs":orgs,
            "all_city": all_city,
            "org_nums": org_nums,
        })

在html文件中进行分页
这里for循环需要使用object_list

 {% for org in all_orgs.object_list %}

     <div class="pageturn">
        <ul class="pagelist">
            {% if all_orgs.has_previous %}
                <li class="long"><a href="?{{ all_orgs.previous_page_number.querystring }}">上一页</a></li>
            {% endif %}

            {% for page in all_orgs.pages %}
                {% if page %}
                    {% ifequal page all_orgs.number %}
                        <li class="active"><a href="?{{ page.querystring }}">{{ page }}</a></li>
                    {% else %}
                        <li><a href="?{{ page.querystring }}" class="page">{{ page }}</a></li>
                    {% endifequal %}
                {% else %}
                    <li class="none"><a href="">...</a></li>
                {% endif %}
            {% endfor %}
            {% if all_orgs.has_next %}
                <li class="long"><a href="?{{ all_orgs.next_page_number.querystring }}">下一页</a></li>
            {% endif %}
        </ul>
    </div>

分类筛选功能

点击某个城市时,该城市处于选中状态,下面显示的数据是当前城市的

class OrgView(View):
    def get(self,request):
        # 查找到所有的课程机构
        all_orgs = CourseOrg.objects.all()

        # 取出所有的城市
        all_city = CityDict.objects.all()

        city_id = request.GET.get('city', '')
        if city_id:
            all_orgs = all_orgs.filter(city_id=int(city_id))

        # 总共有多少家机构使用count进行统计
        org_nums = all_orgs.count()

        # 对课程机构进行分页
        # 尝试获取前台get请求传递过来的page参数
        # 如果是不合法的配置参数默认返回第一页
        try:
            page = request.GET.get('page', 1)
        except PageNotAnInteger:
            page = 1
        # 这里指从allorg中取五个出来，每页显示5个
        p = Paginator(all_orgs, 5, request=request)
        orgs = p.page(page)

        return render(request, "org-list.html", {
            "all_orgs":orgs,
            "all_city": all_city,
            "org_nums": org_nums,
            'city_id': city_id,
        })

后台逻辑中给前端传递了一个city_id用来城市的标记

    <div class="cont">
        <a href="?ct="><span class="{% ifequal city_id '' %}active2{% endifequal %}">全部</span></a>
            {% for city in all_city %}
                <a href="?city={{ city.id }}"><span class="{% ifequal city.id|stringformat:'i' city_id %}active2{% endifequal %}">{{ city.name }}</span></a>
            {% endfor %}
    </div>

因为city.id是一个int类型，要转换成字符串，再作比较。

    {% ifequal city_id '' %}

如果为空，说明没有city选中，则“全部”是“active”

同理,添加类别筛选

# 类别筛选
category = request.GET.get('ct','')
if category:
    all_orgs = all_orgs.filter(category=category)

    <h2>机构类别</h2>
    <div class="cont">
        <a href="?city={{ city_id }}"><span
                class="{% ifequal category '' %}active2{% endifequal %}">全部</span></a>
        <a href="?ct=pxjg&city={{ city_id }}"><span
                class="{% ifequal category 'pxjg' %}active2{% endifequal %}">培训机构</span></a>
        <a href="?ct=gx&city={{ city_id }}"><span
                class="{% ifequal category 'gx' %}active2{% endifequal %}">高校</span></a>
        <a href="?ct=gr&city={{ city_id }}"><span
                class="{% ifequal category 'gr' %}active2{% endifequal %}">个人</span></a>
    </div>

    <h2>所在地区</h2>
    <div class="more">更多</div>
    <div class="cont">
        <a href="?ct={{ category }}"><span
                class="{% ifequal city_id '' %}active2{% endifequal %}">全部</span></a>
        {% for city in all_city %}
            <a href="?city={{ city.id }}&ct={{ category }}"><span
                    class="{% ifequal city_id city.id|stringformat:"i" %}active2{% endifequal %}">{{ city.name }}</span></a>
        {% endfor %}
    </div>

进行城市与分类的联动:

• 当选择全部类别的时候，就只通过当前城市id。
• 当选择全部城市的时候，就只通过当前目录id。
• 当两者都选的时候使用&连接。

课程机构排名

    # 热门机构,如果不加负号会是有小到大。
     hot_orgs = all_orgs.order_by("-click_nums")[:3]

    <div class="right companyrank layout">
        <div class="head">授课机构排名</div>
        {% for curent_org in hot_orgs %}
        <dl class="des">
            <dt class="num fl">{{ foorloop.counter }}</dt>
            <dd>
                <a href="/company/2/"><h1>{{ curent_org.name }}</h1></a>
                <p>{{ curent_org.address }}</p>
            </dd>
        </dl>
        {% endfor %}
    </div>

循环时内置变量forloop.counter取当前循环到第几次

学习人数和课程的筛选

在models中添加学习人数和课程数两个字段

   # 当学生点击学习课程，找到所属机构，学习人数加1
   students = models.IntegerField(default=0, verbose_name=u"学习人数")
   # 当发布课程就加1
   course_nums =  models.IntegerField(default=0, verbose_name=u"课程数")

makemigrations
migrate

    # 进行排序
    sort = request.GET.get('sort', "")
    if sort:
       if sort == "students":
           all_orgs = all_orgs.order_by("-students")
       elif sort == "courses":
           all_orgs = all_orgs.order_by("-course_nums")

    <div class="head">
        <ul class="tab_header">
            <li class="{% if sort == '' %}active{% endif %}"><a href="?sort=students&ct={{ category }}&city={{ city_id }}">全部</a></li>
            <li class="{% if sort == 'students' %}active{% endif %}"><a href="?sort=students&ct={{ category }}&city={{ city_id }}">学习人数 &#8595;</a></li>
            <li class="{% if sort == 'courses' %}active{% endif %}"><a href="?sort=courses&ct={{ category }}&city={{ city_id }}">课程数 &#8595;</a></li>
        </ul>
    </div>

modelform 提交我要学习咨询

在organazition目录下创建forms.py文件

# 普通版本的form
# class UserAskForm(forms.Form):
#     name = forms.CharField(required=True, min_length=2, max_length=20)
#     phone = forms.CharField(required=True, max_length=11, min_length=11)
#     course_name = forms.CharField(required=True, min_length=5, max_length=50)

# 进阶版本的modelform：它可以向model一样save
from django import forms

from operation.models import UserAsk


class AnotherUserForm(forms.ModelForm):
    # 继承之余还可以新增字段

    # 是由哪个model转换的
    class Meta:
        model = UserAsk
        # 我需要验证的字段
        fields = ['name','mobile','course_name']

使用include进行路由分发
在organization目录下新建urls.py

from django.urls import path

from organization.views import OrgView, AddUserAskView

app_name = "organization"

urlpatterns = [
    # 课程机构首页url
    path('list/', OrgView.as_view(), name="org_list"),
]

根目录下的urls.py
删掉org_list，新增include

# 课程机构app的url配置
path("org/", include('organization.urls',namespace="org")),

修改base.html中“课程机构的链接”

    <li class="active" ><a href="{% url 'org:org_list' %}">授课机构</a></li>

后台逻辑代码

# 用户添加我要学习
class AddUserAskView(View):
    # 处理表单提交当然post
    def post(self,request):
        userask_form = UserAskForm(request.POST)
        # 判断该form是否有效
        if userask_form.is_valid():
            # 这里是modelform和form的区别
            # 它有model的属性
            # 当commit为true进行真正保存
            user_ask = userask_form.save(commit=True)
            # 这样就不需要把一个一个字段取出来然后存到model的对象中之后save

            # 如果保存成功,返回json字符串,后面content type是告诉浏览器的,
            return HttpResponse('{"status": "success"}', content_type='application/json')
        else:
            # 如果保存失败，返回json字符串,并将form的报错信息通过msg传递到前端
            return HttpResponse('{"status": "fail", "msg":{0}}'.format(userask_form.errors),  content_type='application/json')

路由

    path('add_ask/', AddUserAskView.as_view(), name="add_ask"),

前端页面采用Ajax方式请求
form表单添加crsf_token

    <script>
        $(function(){
            $('#jsStayBtn').on('click', function(){
                $.ajax({
                    cache: false,
                    type: "POST",
                    url:"{% url "org:add_ask" %}",
                    data:$('#jsStayForm').serialize(),
                    async: true,
                    success: function(data) {
                        if(data.status == 'success'){
                            $('#jsStayForm')[0].reset();
                            alert("提交成功")
                        }else if(data.status == 'fail'){
                            $('#jsCompanyTips').html(data.msg)
                        }
                    },
                });
            });
        })

    </script>

在ModelForm中自定义一个手机号验证的方法

    def clean_mobile(self):
        """
        验证手机号码是否合法
        """
        mobile = self.cleaned_data['mobile']
        REGEX_MOBILE = "^1[358]\d{9}$|^147\d{8}$|176\d{8}$"
        p = re.compile(REGEX_MOBILE)
        if p.match(mobile):
            return mobile
        else:
            raise forms.ValidationError(u"手机号码非法", code="mobile_invalid")

机构详情

• 机构首页
• 机构课程
• 机构介绍
• 机构讲师

课程中应该有一个外键指向它是哪个机构的

# courses/models.py

course_org = models.ForeignKey(CourseOrg,on_delete=models.CASCADE, verbose_name="所属机构",null=True,blank=True)

makemigration 
migrate 

登录xadmin添加基础的必要数据。添加课程与讲师。
新建一个模板，命名为“org_base.html”,复制org-detail-homepage.html的内容到里面,
添加block，修改静态文件路径



把org_base中的三个“right”剪切到home里面
路由配置

    re_path('home/(?P<org_id>\d+)/', OrgHomeView.as_view(), name="org_home"),

视图函数

class OrgHomeView(View):
    '''机构首页'''
    def get(self,request,org_id):
        # 根据id找到课程机构
        course_org = CourseOrg.objects.get(id=int(org_id))
        # 反向查询到课程机构的所有课程和老师
        all_courses = course_org.course_set.all()[:4]
        all_teacher = course_org.teacher_set.all()[:2]
        return render(request,'org-detail-homepage.html',{
            'course_org':course_org,
            'all_courses':all_courses,
            'all_teacher':all_teacher,
        })

显示课程

    <div class="brief group_list">
            {% for course in all_courses %}
             <div class="module1_5 box">
                <a href="course-detail.html"><img width="214" src="{{ MEDIA_URL }}{{ course.image }}"/></a>
                <div class="des">
                    <a href="course-detail.html"><h2>{{ course.name }}</h2></a>
                    <span class="fl">课时：<i class="key">{{ course.learn_times }}</i></span>
                    <span class="fr">参加人数：{{ course.students }}</span>
                </div>
                <div class="bottom">
                    <span class="fl">{{ course.course_org.name }}</span>
                     <span class="star fr  notlogin
                        " data-favid="13"  data-fav-type="4">
                        {{ course.fav_nums }}
                    </span>
                </div>
            </div>
            {% endfor %}
    </div>

修改org-base.html

为讲师增加头像字段

image = models.ImageField(
    default= '',
    upload_to="teacher/%Y/%m",
    verbose_name=u"头像",
    max_length=100)

makemgration 
migrate 

显示机构教师

    <div class="head">
            <h1>机构教师</h1>
            <a class="green fr more" href="org-detail-teachers.html">查看更多</a>
    </div>

    {% for teacher in all_teacher %}
        <div class="diarys">
            <div class="module5 share company-diary-box" style="padding:10px 0;">
                <div class="left">
                    <img class="pic" src="{{ MEDIA_URL }}{{ teacher.image }}"/>
                    <p>昵称：{{ teacher.name }}</p>
                </div>
                <div class="right">
                    <div class="top">
                        <div class="fl">
                            <a href=""><h1>java开发教程</h1></a>
                            <span>发表于：2015-10-12</span>
                        </div>
                    </div>
                    <div class="middle" style="border-bottom:0;">课程介绍</div>
                </div>
            </div>
        </div>
    {% endfor %}

显示机构详情

    <div class="right companycenter layout" >
        <div class="head">
            <h1>机构介绍</h1>
            <a class="green fr more" href="org-detail-desc.html">查看更多  >  </a>
        </div>
        <div class="cont">{{ course_org.desc }}</div>
    </div>

机构课程

配置路由

re_path('course/(?P<org_id>\d+)/', OrgCourseView.as_view(), name="org_course"),

视图函数

class OrgCourseView(View):
    """
   机构课程列表页
    """
    def get(self, request, org_id):
        # 根据id取到课程机构
        course_org = CourseOrg.objects.get(id= int(org_id))
        # 通过课程机构找到课程。内建的变量，找到指向这个字段的外键引用
        all_courses = course_org.course_set.all()

        return render(request, 'org-detail-course.html',{
           'all_courses':all_courses,
            'course_org': course_org,
        })

修改org-base.html中left的链接

    <div class="left">
        <ul>
           <li class="{% ifequal current_page 'home' %}active2{% endifequal %}"><a href="{% url 'org:org_home' course_org.id %}">机构首页</a></li>
           <li class="{% ifequal current_page 'course' %}active2{% endifequal %}"><a href="{% url 'org:org_course' course_org.id %}">机构课程</a></li>
           <li class="{% ifequal current_page 'desc' %}active2{% endifequal %}"><a href="{% url 'org:org_desc' course_org.id %}">机构介绍</a></li>
           <li class="{% ifequal current_page 'teacher' %}active2{% endifequal %}"><a href="{% url 'org:org_teacher' course_org.id %}">机构讲师</a></li>
        </ul>
    </div>

显示机构课程，修改org-detail-course.html

    {% block right_form %}
    <div class="right companycenter layout" >
            <div class="head">
                <h1>机构课程</h1>
            </div>
            <div class="brief group_list">
            {% for course in all_courses %}
                <div class="module1_5 box">
                    <a class="comp-img-box" href="course-detail.html">

                        <img width="214" height="195" src="{{ MEDIA_URL }}{{ course.image }}"/>
                    </a>
                    <div class="des">
                        <a href="course-detail.html"><h2>{{ course.name }}</h2></a>
                        <span class="fl">课时：<i class="key">{{ course.learn_times }}</i></span>
                        <span class="fr">学习人数{{ course.students }}</span>
                    </div>
                    <div class="bottom">
                        <span class="fl">{{ course.course_org.name }}</span>
                        <span class="star fr  notlogin
                            " data-favid="13" data-fav-type="4">
                            {{ course.fav_nums }}
                        </span>
                    </div>
                </div>
            {% endfor %}
                <div class="pageturn">
                    <ul class="pagelist">
                        <li class="active"><a href="?page=1">1</a></li>
                    </ul>
                </div>
        </div>
    {% endblock %}

左侧active修改

因为现在没有值能判断当前是哪个页面。所以在orghomeview中传值回来current page
修改views，传个current_page参数到前端，可以知道当前是哪个被激活状态

class OrgHomeView(View):
    '''机构首页'''

    def get(self,request,org_id):
        current_page = 'home'

        # 根据id找到课程机构
        course_org = CourseOrg.objects.get(id=int(org_id))
        # 反向查询到课程机构的所有课程和老师
        all_courses = course_org.course_set.all()[:4]
        all_teacher = course_org.teacher_set.all()[:2]
        return render(request,'org-detail-homepage.html',{
            'course_org':course_org,
            'all_courses':all_courses,
            'all_teacher':all_teacher,
            'current_page': current_page,
        })


class OrgCourseView(View):
    """
   机构课程列表页
    """
    def get(self, request, org_id):
        current_page = 'course'

        # 根据id取到课程机构
        course_org = CourseOrg.objects.get(id= int(org_id))
        # 通过课程机构找到课程。内建的变量，找到指向这个字段的外键引用
        all_courses = course_org.course_set.all()

        return render(request, 'org-detail-course.html',{
           'all_courses':all_courses,
            'course_org': course_org,
            'current_page': current_page,
        })

机构介绍

re_path('desc/(?P<org_id>\d+)/', OrgDescView.as_view(), name="org_desc"),

class OrgDescView(View):
    '''机构介绍页'''
    def get(self, request, org_id):
        current_page = 'desc'
        # 根据id取到课程机构
        course_org = CourseOrg.objects.get(id= int(org_id))
        return render(request, 'org-detail-desc.html',{
            'course_org': course_org,
            'current_page':current_page,
        })

    {% block right_form %}
    <div class="right companycenter layout" >
            <div class="head">
                <h1>机构介绍</h1>
            </div>
            <div class="des">

                {{ course_org.desc }}

            </div>
        </div>
    {% endblock %}        

机构讲师

re_path('teacher/(?P<org_id>\d+)/', OrgTeacherView.as_view(), name="org_teacher"),

class OrgTeacherView(View):
    """
   机构教师页
    """
    def get(self, request, org_id):
        current_page = 'teacher'
        course_org = CourseOrg.objects.get(id= int(org_id))
        all_teacher = course_org.teacher_set.all()

        return render(request, 'org-detail-teachers.html',{
           'all_teacher':all_teacher,
            'course_org': course_org,
            'current_page':current_page,
        })

    {% block right_form %}
     <div class="right companycenter layout" >
            <div class="head">
                <h1>机构讲师</h1>
            </div>
            <div class="messagelist">
                <div class=" butler_list butler-fav-box">
                    {% for teacher in all_teacher %}
                    <dl class="des users">
                        <dt>
                            <a href="">
                            <img width="100" height="100" class="scrollLoading" data-url="{{ MEDIA_URL }}{{ teacher.image }}" src="{{ MEDIA_URL }}{{ teacher.image }}"/>
                            </a>
                        </dt>
                        <dd>
                            <h1>
                                <a href="">
                                {{ teacher.name }}<span class="key">已认证</span>
                                </a>
                            </h1>
                            <ul class="cont clearfix">
                                <li class="time">工作年限：<span>{{ teacher.work_years }}</span></li>
                                <li class="c7">课程数：<span>3</span></li>
                            </ul>
                        </dd>
                    </dl>
                    {% endfor %}
                </div>
            </div>
        </div>
    {% endblock %}

重载我们的pagepath和title,使数据动态显示

    {% block title %}机构教师{% endblock %}

    {% block page_path %}
    机构教师
    {% endblock %}

课程机构收藏功能

path('add_fav/', AddFavView.as_view(), name="add_fav"),

class AddFavView(View):
    """
    用户收藏与取消收藏功能
    """
    def post(self, request):
        # 表明你收藏的不管是课程，讲师，还是机构。他们的id
        # 默认值取0是因为空串转int报错
        id = request.POST.get('fav_id', 0)
        # 取到你收藏的类别，从前台提交的ajax请求中取
        type = request.POST.get('fav_type', 0)

        # 收藏与已收藏取消收藏
        # 判断用户是否登录:即使没登录会有一个匿名的user
        if not request.user.is_authenticated:
            # 未登录时返回json提示未登录，跳转到登录页面是在ajax中做的
            return HttpResponse('{"status":"fail", "msg":"用户未登录"}', content_type='application/json')
        exist_records = UserFavorite.objects.filter(user=request.user, fav_id=int(id), fav_type=int(type))
        if exist_records:
            # 如果记录已经存在， 则表示用户取消收藏
            exist_records.delete()
            return HttpResponse('{"status":"success", "msg":"收藏"}', content_type='application/json')
        else:
            user_fav = UserFavorite()
            # 过滤掉未取到fav_id type的默认情况
            if int(type) >0 and int(id) >0:
                user_fav.fav_id = int(id)
                user_fav.fav_type = int(type)
                user_fav.user = request.user
                user_fav.save()
                return HttpResponse('{"status":"success", "msg":"已收藏"}', content_type='application/json')
            else:
                return HttpResponse('{"status":"fail", "msg":"收藏出错"}', content_type='application/json')

Ajax放在org_base.html里面

    <script type="text/javascript">
    //收藏分享
    function add_fav(current_elem, fav_id, fav_type){
        $.ajax({
            cache: false,
            type: "POST",
            url:"{% url 'org:add_fav' %}",
            data:{'fav_id':fav_id, 'fav_type':fav_type},
            async: true,
            beforeSend:function(xhr, settings){
                xhr.setRequestHeader("X-CSRFToken", "{{ csrf_token }}");
            },
            success: function(data) {
                if(data.status == 'fail'){
                    if(data.msg == '用户未登录'){
                        window.location.href="/login/";
                    }else{
                        alert(data.msg)
                    }

                }else if(data.status == 'success'){
                    current_elem.text(data.msg)
                }
            },
        });
    }

    $('.collectionbtn').on('click', function(){
        add_fav($(this), {{ course_org.id }}, 2);
    });

还有个问题就是，刷新页面后，“已收藏”就变成“收藏”，是因为在返回页面的时候，没有判断收藏状态, 所有要在views里面加个判断

 # 判断收藏状态
    has_fav = False
    if request.user.is_authenticated:
        if UserFavorite.objects.filter(user=request.user, fav_id=course_org.id, fav_type=2):
            has_fav = True

# return redener加上值
    "has_fav": has_fav

四个view都要添加

class OrgDescView(View):
    '''机构介绍页'''
    def get(self, request, org_id):
        current_page = 'desc'
        # 根据id取到课程机构
        course_org = CourseOrg.objects.get(id= int(org_id))

        has_fav = False
        # 必须是用户已登录我们才需要判断。
        if request.user.is_authenticated:
            if UserFavorite.objects.filter(user=request.user, fav_id=course_org.id, fav_type=2):
                has_fav = True
        return render(request, 'org-detail-desc.html',{
            'course_org': course_org,
            'current_page':current_page,
            'has_fav': has_fav,
        })

前台 org_base.html中

    <div class="btn fr collectionbtn  notlogin 
         "data-favid="22" data-fav-type="1">
         {% if has_fav %}已收藏{% else %}收藏{% endif %}
    </div>