Django之前后端交互

{% load staticfiles %}
    

#base.html
{% block custom_bread %}
{% endblock %}

#org-list.html
{% block custom_bread %}

    

        

            
首页>
            
课程机构
        
    

{% endblock %}

#apps/organizations/views.py
from apps.organizations.models import CourseOrg
class OrgView(View):
    def get(self, request, *args, **kwargs):
        all_orgs = CourseOrg.objects.all()
        return render(request, "org-list.html",{
            "all_orgs":orgs,
        })

#templates/org-list.html
{% for org in all_orgs.object_list %}
                

                    

                        
                            
                        
                    
                    

                        

                             
                                 
{{org.org_name}}
                                 

                                     {% if org.is_auth %}
                                         
                                     {% endif %}
                                     {% if org.is_gold %}
                                         
                                     {% endif %}
                                 
                             
                        
                        

                            
课程数：{{org.course_nums}}
学习人数：{{org.students}}
                            
{{ org.address }}
                            
经典课程：

                                    {% for course in org.courses %}
                                    {{course.cname}}
                                    {% endfor %}
                                    c语言基础
                                    数据库基础

                            
                        
                    
                    

联系
服务
                
            {% endfor %}

#apps/organizations/models.py
class CourseOrg(BaseModel):
    org_name = models.CharField(max_length=50, verbose_name="机构名称")

    desc = models.TextField(verbose_name="描述")
    tag = models.CharField(default="全国知名", max_length=10, verbose_name="机构标签")
    category = models.CharField(default="pxjg", verbose_name="机构类别", max_length=4,
                                choices=(("pxjg", "培训机构"), ("gr", "个人"), ("gx", "高校")))
    click_nums = models.IntegerField(default=0, verbose_name="点击数")
    fav_nums = models.IntegerField(default=0, verbose_name="收藏数")
    image = models.ImageField(upload_to="org/%Y/%m", verbose_name="logo", max_length=100)
    address = models.CharField(max_length=150, verbose_name="机构地址")
    students = models.IntegerField(default=0, verbose_name="学习人数")

    course_nums = models.IntegerField(default=0, verbose_name="课程数")

    is_auth = models.BooleanField(default=False, verbose_name="是否认证")
    is_gold = models.BooleanField(default=False, verbose_name="是否金牌")

    city = models.ForeignKey(City, on_delete=models.CASCADE, verbose_name="所在城市")

    def courses(self):
        from apps.course.models import Course
        courses = Course.objects.filter(course_org=self)
        return courses
    class Meta:
        verbose_name = "课程机构"
        verbose_name_plural = verbose_name
    def __str__(self):
        return self.org_name

#apps/course/models.py
from apps.organizations.models import CourseOrg
class Course(BaseModel):
    teacher = models.ForeignKey(Teacher, on_delete=models.CASCADE, verbose_name="讲师")
    course_org = models.ForeignKey(CourseOrg,related_name='org_name+', null=True, blank=True,max_length=50,on_delete=models.SET_NULL, verbose_name="课程机构")
    cname = models.CharField(verbose_name="课程名", max_length=50,default="")
  
    desc = models.CharField(verbose_name="课程描述", max_length=300)
    learn_times = models.IntegerField(default=0, verbose_name="学习时长(分钟数)")
    degree = models.CharField(verbose_name="难度", choices=(("cj", "初级"), ("zj", "中级"), ("gj", "高级")), max_length=2)
    students = models.IntegerField(default=0, verbose_name='学习人数')
    fav_nums = models.IntegerField(default=0, verbose_name='收藏人数')
    click_nums = models.IntegerField(default=0, verbose_name="点击数")

    notice = models.CharField(verbose_name="课程公告", max_length=300, default="")
    category = models.CharField(default="后端开发", max_length=20, verbose_name="课程类别")
    tag = models.CharField(default="", verbose_name="课程标签", max_length=10)
    youneed_know = models.CharField(default="", max_length=300, verbose_name="课程须知")
    teacher_tell = models.CharField(default="", max_length=300, verbose_name="老师告诉你")
    is_classics = models.BooleanField(default=False, verbose_name="是否经典")
    detail = models.TextField(verbose_name="课程详情")
    image = models.ImageField(upload_to="courses/%Y/%m", verbose_name="封面图", max_length=100)
    def courses(self):
        from apps.course.models import Course
        courses = Course.objects.filter(course_org=self)
        return courses
    class Meta:
        verbose_name = "课程信息"
        verbose_name_plural = verbose_name

    def __str__(self):
        return self.cname