仅对特定用户强制填写表单字段

Question

是否可以在模板中为特定用户创建一个强制或非强制的表单域？我有一个字段，我希望除管理员之外的所有人都必须填写。

我的理解是这是不可能的，因为model.py 中的null=False, blank=False 对该字段的所有实例都有效。我错了吗？

编辑 - 添加代码

models.py

class Work(models.Model):
    [...]
    title = models.CharField(max_length=200) # max_length = required
    [...]

class Event(models.Model):
    [...]
    repertoire = models.ManyToManyField(Work, blank=True)
    [...]

forms.py

from .models import Work, Event
class EventForm(forms.ModelForm):

    required_css_class = 'required'

    class Meta:
        model = Event
        fields = [
            [...]
            'repertoire',
            [...]
                    }
    def __init__(self, *args, **kwargs):
        super(EventForm, self).__init__(*args, **kwargs)

views.py

from .forms import EventForm,
@never_cache
def event_create_view(request):
    active_user = request.user
    form_event = EventForm(request.POST or None, initial={'submitted_by' : active_user.profile.id})

    if request.method == "POST" and form_event.is_valid():

        this_event = form_event.save()
        return redirect('event-edit', id=this_event.id)

    else:
        messages.error(request, form_event.errors)

    context = {
            'form_event': form_event,
            }

模板.html

<form id="eventForm" action='.' enctype="multipart/form-data" method='POST'>
[...]
{{ form_event.repertoire }}
[...]
    <input class="button" type='submit' value='Continue ->' />

</form>

Answer 1

您可以为某些用户设置必填字段。例如通过添加一个额外的参数：

from .models import Work, Event

class EventForm(forms.ModelForm):
    required_css_class = 'required'

    class Meta:
        model = Event
        fields = [
            # …
            'repertoire',
            # …
        ]
    def __init__(self, *args, repertoire_required=True, **kwargs):
        super(EventForm, self).__init__(*args, **kwargs)
        self.fields['repertoire'].required = repertoire_required

在视图中，我们根据登录用户是否为is_admin等事实来指定参数：

from .forms import EventForm
from django.contrib.auth.decorators import login_required

@never_cache
@login_required
def event_create_view(request):
    active_user = request.user
    if request.method == 'POST':
        form_event = EventForm(
            request.POST,
            repertoire_required=not active_user.is_superuser,
            initial={'submitted_by' : active_user.profile.id }
        )
        if form_event.is_valid():
            this_event = form_event.save()
            return redirect('event-edit', id=this_event.id)
        else:
            messages.error(request, form_event.errors)
    else:
        form_event = EventForm(
            request.POST,
            repertoire_required=not active_user.is_superuser
        )
    context = {
        'form_event': form_event,
    }
    # …