Django赋值BoundField

Question

我知道我们可以通过这种方式访问表单BoundField值

form = ItemFormAdmin
value = form['somekey'].value()

但是我如何给边界字段赋值呢？我试过这种方式

form = ItemFormAdmin
form['somekey'] = value

但上面写着'ItemForm' object does not support item assignment

Answer 1

将值赋给BoundField是没有意义的。表单已提交，用户看不到您的值。

如果要在字段出现在cleaned_data中之前更改其值，请重写somekey_clean或clean方法。

如果你想设置初始值(在表单提交前输入的值)，使用这个(在表单的__init__中)

form.fields['somekey'].initial = value

编辑1

class MyForm(forms.Form):
# ...

    def clean(self):
        cleaned_data = super(MyForm, self).clean()

        # get "some info from the form"
        part1 = cleaned_data.get('part1_field', '')
        part2 = cleaned_data.get('part2_field', '')

        # "manipulate it to fill another filed"
        cleaned_data['another_field'] = part1 + part2

        return cleaned_data