我想将元素添加到我的数据库(对于模型学生),同时让来自另一个模型(学校)的内容与学生的表单一起显示。\
这是models.py
class School(models.Model):
name = models.CharField(max_length=256)
principal = models.CharField(max_length=256)
location = models.CharField(max_length=256)
def get_absolute_url(self):
return reverse('basiccbv:detail', kwargs={'pk':self.pk})
def __str__(self):
return self.name
class Student(models.Model):
name = models.CharField(max_length=256)
age = models.PositiveIntegerField(validators= [validators.MinValueValidator(1),validators.MaxValueValidator(20)],default=1)
school = models.ForeignKey(School, related_name='students')
def __str__(self):
return self.name
在我的 views.py 中我有这个:
class SchoolDetailedView(DetailView):
context_object_name = 'school_detail'
model = models.School
template_name = 'basiccbv/school_detail.html'
# What i want is when I visit the link in the description I want to
# to see the school stuff and the form to add the student in this new
# view
class StudentCreateView(CreateView):
model = models.School
# I tried using the Student but that I don't know how to display the
# school information, I tried with related_name = 'students' but it
# didn't work(I don't know if that can be done the way that intended it
# or I just don't have the knowledge )
fields = ['name', 'age']
# If I use School I could get the name of the school in the title and
# its primary key, but than I don't know how to display the form and
# vise versa
template_name = 'basiccbv/student_update.html'
这是 .html 文件,可将我带到需要表单的页面。 该链接是调用“basiccbv:studentupdate”的链接 这里使用了 related_name students 但我仍然不知道它是否可以 按照我想要的方式添加东西
<h1>Welcome to the school details page</h1>
<h2>School details:</h2>
<p>Name: {{ school_detail.name }}</p>
<p>Principal: {{ school_detail.principal }}</p>
<p>Location: {{ school_detail.location }}</p>
<h3>Students:</h3>
{% for student in school_detail.students.all %}
<p>{{ student.name }} who is {{ student.age }} years old.</p>
{% endfor %}
<div class="container">
<p><a href="{% url 'basiccbv:studentupdate' pk=school_detail.pk %}">Add a
student</a></p>
这是带有表单的 .html 文件
## I changed this part bellow but nothing worked
<h1>Student coming to {{ student.school.name }}</h1>
<form method="post">
{% csrf_token %}
{{ form.as_p }}
<input type="submit" class="btn btn-primary" value="Add student">
</form>
我真的被困住了,找不到任何相关信息,但如果你能帮助我或提供任何建议,谢谢。
我以前添加学生的方式是使用 admin,对于学校,我使用 admin,直到我创建了用于创建学校的 View ,该 View 可以正常工作(可能是因为没有外键)。
最佳答案
我认为你可以采用这种方法
表格:
# We need to define a new form first
class StudentForm(forms.ModelForm):
class Meta:
model = Student
fields = ['name', 'age']
观点:
# we are using form view for using the form mentioned above
class StudentCreateView(FormView):
form_class = StudentForm
success_url = "/"
def get(self, request, school_id, **kwargs):
context = self.get_context_data(**kwargs) # getting context, ie: the form
context[school] = School.objects.get(pk=school_id) # updating the context with school object using the PK provided with the url
return self.render_to_response(context)
def post(self, request, school_id, **kwargs):
# overriding default implementation
form = self.get_form()
if form.is_valid():
return self.form_valid(form, school_id) # passing the pk value to form valid function to override
else:
return self.form_invalid(form)
def form_valid(self, form, school_id):
# overriding default implementation
self.object = form.save(commit=False)
self.object.school = School.objects.get(id=school_id) # saving the school information to the object
self.object.save()
return super(StudentCreateView, self).form_valid(form)
模板
# template
<h1>Student coming to {{ school.name }}</h1>
<form method="post">
{% csrf_token %}
{{ form.as_p }}
<input type="submit" class="btn btn-primary" value="Add student">
</form>
网址
path('school/student-update/<int:school_id>/', StudentCreateView.as_view(), name='studentupdate'),
关于python - Django 使用外键添加到数据库,同时仍显示来自其他模型的信息,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/53216339/