Question

我用model-slug创建了一些链接。但是当我单击我的链接时，转到页面但返回空值。我想当我点击任何链接时，它将查询所选字段中的值，如class_name或slug字段。

此课程列表html页面

{% extends "result/base.html" %} 
{% block title %}Class List Name{% endblock title %} {% block content %}
<div class="row">
    <div class="col-md-12 col-xs-offset-4">
        <h2>Class List</h2>
        {% for object in object_list  %}
        <a href="{% url 'result:class-detail' object.slug %}">{{object.class_name}}</a>
        {% endfor %}
    </div>
</div>
{% endblock %}

这是models.py文件

class ClassName(models.Model):
    class_name=models.CharField('Class Name', max_length=10)
    class_added=models.DateTimeField(auto_now_add=True)
    class_updated=models.DateTimeField(auto_now=True)
    slug=models.SlugField(max_length=200, unique=True)


    def __str__(self):
        return self.class_name

这是views.py文件

class ClassListView(ListView):
    model=ClassName
    slug_field = 'slug'
    template_name='result/class_list.html'


class ClassDetailView(DetailView):
    model=ClassName
    slug_field = 'slug' 
    template_name='result/class_detail.html'



    def get_context_data(self,*args, **kwargs):
        context = super(ClassDetailView, self).get_context_data(*args,**kwargs)
        context['class_wise_std'] = StudentInfo.objects.filter(
            student_class_name__class_name__startswith=self.model.slug)

        return context

这是课程详情html页面

{% extends "result/base.html" %} 
{% block title %}Class Detail's List{% endblock title %}
{% block content %}

<div class="row">
     {% for object in class_wise_std %}
    <div class="col-lg-12 col-sm-offset-4" style="margin:20px 10px">


        <p>Name: {{object.student_name}}</p>
        <p>Class: {{object.student_class_name}}</p>
        <p>Father's Name: {{object.student_father_name}}</p>
        <p>Mother's Name: {{object.student_mother_name}}</p>
        <p>Roll: {{object.student_roll}}</p>

    </div>
     {% endfor %}

</div>


{% endblock content %}

此代码

def get_context_data(self,*args, **kwargs):
        context = super(ClassDetailView, self).get_context_data(*args,**kwargs)
        context['class_wise_std'] = StudentInfo.objects.filter(
            student_class_name__class_name__startswith=self.model.slug)

        return context

我发现此问题会发生此问题。我想使用 ClassName 模型中的 class_name 字段进行过滤。

StudentInfo.objects.filter(student_class_name__class_name__startswith=self.model.slug)

但我可以通过这种方式成功查询我的目标信息。

StudentInfo.objects.filter(student_class_name__class_name__startswith='One')

但这不是一种有效的方式。现在，我该如何动态实现这个？

Django：在基于类的视图中查询模型中的选定信息

0 个答案: