初始数据未在Django模型中完全显示

时间:2019-01-23 18:14:25

标签: python django list-comprehension defaultdict formset

我正在尝试为表单集中的每个表单显示不同的初始数据。我没有收到错误,但是数据并未完全显示。仅显示第一个对象。我该如何解决?

all_names = defaultdict(list)

for object in MyModel.objects.all():    #  obj1 = John, obj2 = Bob
    all_names['name'].append(object)

MyFormSet = modelformset_factory(MyModel, fields=('name'), extra=2)
formset = MyFormSet(initial=[{'name': n for n in names} for names in all_names.values()]

当我跑步时:

[print(form.initial) for form in formset]

我得到:

{'name': <Name: John>}
{}  # Where is my second object?

1 个答案:

答案 0 :(得分:0)

为解决这个问题,我使用了一个列表并附加了字典,而不是使用defaultdict

all_names = list()  # used a list instead of defaultdict

for object in MyModel.objects.all():    #  obj1 = John, obj2 = Bob
    d = dict()
    d['name'] = object
    all_names.append(d)

,而不是:

formset = MyFormSet(initial=[{'name': n for n in names} for names in all_names.values()]

我做到了:

formset = MyFormSet(initial=all_names)