Question

Django multiselect不会返回/渲染保存在数据库中的选定选项

form.py

class testform(forms.ModelForm):

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        temp = User.objects.values_list('username', flat=True).filter(groups__name = "Artist")
        OPTIONS1 = zip(temp, temp)
        self.fields['column'].choices = [OPTIONS for OPTIONS in OPTIONS1]

    column = forms.MultipleChoiceField(required = True, choices= [])

选择选项就像

views.py

def index(request):

    if request.method == "POST":
        form = testform(request.POST)
        if form.is_valid():
            form.save()
        return redirect('index')
    else:
        form = testform()
    return render(request, 'dummy/index.html', {
        'edit_form' : form})

数据被保存为选中状态

['artist1', 'artist2', 'artist3']

但是在重新访问同一页面时，它不会显示该实例的所选选项，而是“选择多个”框没有上述3个选项的选择

检索视图

def dummyedit(request, id): 
    obj = bfs_projects.objects.get(id = id) 
    if request.method == "POST": 
       form = testform(request.POST, instance =obj) 
       if form.is_valid(): 
           form.save() 
           return redirect('index') 
    else: 
       form = testform(instance =obj) 
    return render(request, 'dummy/index.html', { 'edit_form' : form, })

models.py

class bfs_projects(models.Model):

    column = models.CharField(max_length = 255)

非常感谢您的帮助，预先感谢

Django未在Multiselect中显示选定的选择

0 个答案: