如何打印多对多字段

Question

models.py:

from django.db import models

class Course(models.Model):
    course = models.TextField(blank=True)
 
class Student(models.Model):
    first_name = models.TextField()
    last_name = models.TextField()
    course = models.ManyToManyField(Course)

forms.py:

from django import forms
from .models import Student, Course

class StudentForm(forms.ModelForm):
    
    class Meta:
        model = Student
        fields = ['first_name', 'last_name', 'course']

class CourseForm(forms.ModelForm):
    
    class Meta:
        model = Course
        fields = ['course']

views.py:

def students_view(request):

    if request.method == 'POST':
        students_form = StudentForm(request.POST)
        if students_form.is_valid():
            students_form.save()

    print(Student.objects.all().values())

    students_form = StudentForm()

    context = {
        'form':students_form
    }
    return render(request, 'courses/courses.html', context)

如果我打印 print(Student.objects.all().values())，那么我会看到学生 ID、first_name 和 last_name。但我看不出他们属于哪个群体。如何打印？

Answer 1

例如这样：

students = Student.objects.prefetch_related("course")

print([(s, list(s.course.all()),) for s in students])

如何打印多对多字段

How to print many-to-many field

python

django

django-models