Django DetailView don't show data in template

Question

Hello I'm just starting use the CBV in Django. My ListView working normal it can get the id in models except DetailView. It don't show the detail data.

https://drive.google.com/file/d/17yeU-LdvV_yLjnBB2A2gYt5ymSeKvPAR/view?usp=sharing

Here the code:

models.py:

class School(models.Model):
    name = models.CharField(max_length=125)
    principal = models.CharField(max_length=125)
    location = models.CharField(max_length=125)

def __str__(self):
    return self.name

class Student(models.Model):
    name = models.CharField(max_length=70)
    age = models.PositiveIntegerField()
    school = models.ForeignKey(School,related_name='students',on_delete=models.CASCADE)

    def __str__(self):
        return self.name

urls.py:

  urlpatterns = [
    path('',views.School_List.as_view(),name='school_list'),
    path('<int:pk>/',views.School_Detail.as_view(),name='school_detail'),
]

views.py:

class School_List(ListView):
    context_object_name = 'schoollist'
    model = School

class School_Detail(DetailView):
    contex_object_name = 'schooldetail'
    model = School
    template_name = 'basicapp/School_detail.html'

detail.html:

{% block content %}
    <h1>Site showing School Detail</h1>
    <div class="container">
        <div class="p-5 text-white bg-dark rounded-3 container">
            <p>Name: {{schooldetail.name}}</p>
            <p>Principal: {{schooldetail.principal}}</p>
            <p>Location: {{schooldetail.location}}</p>
            <h2>Student: </h2>
            {% for student in schooldetail.students.all %}
                <p>{{student.name}} who is {{student.age}} years old</p>
            {% endfor %}
        </div>
    </div>
{% endblock %}

Thank you

Answer 1

In School_Detail you use Student as Model instead of School Model.

Change your Model from Student to School as

class School_Detail(DetailView):
    context_object_name = 'schooldetail'
    model = School                       #<---- change model name here
    template_name = 'basicapp/School_detail.html'

Answer 2

it should be {{schooldetail.school.name}} not {{schooldetaill.name}} as you using Student model in your details views so you can access School model via your foreign key fields of Student model.

{% block content %}
        <h1>Site showing School Detail</h1>
        <div class="container">
            <div class="p-5 text-white bg-dark rounded-3 container">
                <p>Name: {{schooldetail.school.name}}</p>
                <p>Principal: {{schooldetail.school.principal}}</p>
                <p>Location: {{schooldetail.school.location}}</p>
                <h2>Student: </h2>
                {% for student in schooldetail.students.all %}
                    <p>{{student.name}} who is {{student.age}} years old</p>
                {% endfor %}
            </div>
        </div>
    {% endblock %}

Answer 3

It's a typo. The code is not working because in the:

class School_Detail(DetailView):
    contex_object_name = 'schooldetail' 
    model = School
    template_name = 'basicapp/School_detail.html'

I just missed a letter 't' in the context_object_name.