Django uploading multiple images - django

Question

Ive been trying to make this for two days now. I have created website that is capable of uploading one image file, but i would like to be able to upload more of them, that are connected to the same main model.
This is what i have for one picture upload:
forms.py:
from django import forms
from .models import Exam
class ExamForm(forms.ModelForm):
class Meta:
model = Exam
fields = ['exam_number', 'exam_file']
widgets = {
'exam_number': forms.NumberInput(
attrs={'id': 'exam_number', 'required': True,})
}
Models.py:
from django.db import models
from django.contrib.auth.models import User
from django.template.defaultfilters import slugify
from datetime import datetime
from django.core.validators import MaxValueValidator, MinValueValidator
class Exam(models.Model):
exam_number = models.PositiveIntegerField(validators=[MaxValueValidator(6),MinValueValidator(1)])
exam_path = models.CharField(max_length=255)
exam_file = models.ImageField() #i want to be able to upload more of these
exam_date = models.DateTimeField(auto_now_add=True)
exam_user = models.ForeignKey(User, null=True)
def __str__(self):
return self.exam_path
def __int__(self):
return self.exam_number
views.py:
def create_exam(request, letnik_id, classes_id, subject_id):
response_data = {}
if subject_id in SUBJECTS:
path = letnik_id + '/' + classes_id + '/' + subject_id
form = ExamForm(request.POST or None, request.FILES or None)
if form.is_valid():
exam = form.save(commit=False)
exam.exam_user = request.user
exam.exam_path = path
exam.exam_file = request.FILES['exam_file']
file_type = exam.exam_file.url.split('.')[-1]
file_type = file_type.lower()
if file_type not in IMAGE_FILE_TYPES:
context = {
'error_message': 'error',
}
return Http404("Napaka")
if Exam.objects.filter(exam_path=path, exam_number=exam.exam_number):
context = {
'form': form,
'error_message': 'error',
}
return render(request, 'tests.html', context)
exam.save()
return redirect('subject_id', letnik_id=letnik_id, classes_id=classes_id, subject_id=subject_id)
context = {
"form": form
}
raise Http404("error")
raise Http404("error")
ive heard that it would be best to make separated model for files, but i dont know how to make views that would connect to parent(exam) model.
Help is appreciated!

Answer 1

You need to create a separate model that would look something like this
class ExamFile(models.Model):
file = models.ImageField()
exam = models.ForeignKey(Exam, null=False)
Then in your view, instead of adding the exam_file to the exam, you will instead use it to create this new model. This will look something like this
from .models import Exam, ExamFile
...
exam_file = ExamFile.objects.create(
file = request.FILES['exam_file'],
exam=exam
)
For more information on fixing up the forms, you can check out the docs found here