forms.ModelMultipleChoiceField 을 처리하는 방법

forms.py

class PersonForm(forms.ModelForm):
  
    jobs = forms.ModelMultipleChoiceField(queryset=Job.objects.all(), 
            widget=forms.CheckboxSelectMultiple)
    tags = forms.ModelMultipleChoiceField(queryset=Tag.objects.all(), widget=forms.SelectMultiple)
    x = forms.FloatField(widget=forms.HiddenInput(),required=False)
    y = forms.FloatField(widget=forms.HiddenInput(),required=False)
    width = forms.FloatField(widget=forms.HiddenInput(),required=False)
    height = forms.FloatField(widget=forms.HiddenInput(),required=False)
    picture = forms.FileField(required=False)

    class Meta:
        model = Person
        fields = ['name', 'nick_name', 'birth_year', 'jobs', 'picture', 'url', 'x', 'y', 'width', 'height', ]
        widgets = {
            'picture': forms.FileInput(attrs={
                'accept': 'image/*'  # this is not an actual validation! don't rely on that!
            })
        }

models.py

class Person(models.Model):
    """docstring for Person"""
    """ 생략 """

    name = models.CharField(max_length=30)
    nick_name = models.CharField(max_length=30, verbose_name='별칭', null=True, blank=True)
    birth_year = models.IntegerField(null=True, verbose_name='출생년도', blank=True)
    sex = models.CharField(max_length=1, choices=SEX, default=MALE)
    jobs = models.ManyToManyField(Job, blank=True)    # ManyToManyField
    picture = models.ImageField(upload_to='person_picture/%Y/%m/', null=True, blank=True)
    url = models.URLField(null=True, blank=True)
    regions = models.ManyToManyField(Region, blank=True)
    tags = models.ManyToManyField('Tag', blank=True)  # ManyToManyField
    """ 생략 """"

    class Meta:
        ordering = ['name',]

    def __str__(self):
        return self.name

views.py

@login_required
def add_person(request):
    if request.method == 'POST':
        tag_array = []
        form = PersonForm(request.POST, request.FILES)
        if form.is_valid():
            person = form.save()
            name = form.cleaned_data.get('name')
            if not person.nick_name:
                person.nick_name = name
                    
            person.created_user = request.user
            person.save()

            # Jobs
            jobs = form.cleaned_data.get('jobs')
            if jobs:
                person.jobs.set(jobs)

            # Tags
            tags = form.cleaned_data.get('tags')
            if tags:
                tag_list = tags.split(',')
                for tag in tag_list:
                    tag = tag.strip()
                    tagged, created = Tag.objects.get_or_create(tag=tag)
                    tag_array.append(tagged)
                    
            tagged, created = Tag.objects.get_or_create(tag=name)
            tag_array.append(tagged)
            person.tags.set(tag_array)
            
            messages.success(request, "{} 이 추가 되었습니다.".format(name))
            return redirect('records:check_event', person.id)
    else:
        person = request.GET.get('person')
        form = PersonForm(initial={'name':person})
    return render(request, 'records/add_person.html', {'form':form})



@login_required
def edit_person(request, person_id):
    person = get_object_or_404(Person, id=person_id)
    if request.method == 'POST':
        tag_array = []
        form = PersonForm(request.POST, request.FILES, instance=person)
        if form.is_valid():
            person = form.save()
            name = form.cleaned_data.get('name')

            # Jobs
            jobs = form.cleaned_data.get('jobs')
            if jobs:
                person.jobs.set(jobs)

            # Jobs
            tags = form.cleaned_data.get('tags')
            if tags:
                person.tags.set(tags)

            person.created_user = request.user
            person.save()
            
            messages.success(request, "{} 이 수정 되었습니다.".format(name))
            return redirect('records:person_detail', person.id)
    else:
        form = PersonForm(instance=person)
    return render(request, 'records/add_person.html', {'form':form})