Django的.选择字段的初始值动态 [英] Django. Initial value of Choice Field dynamically

问题描述

我试图在视图中动态设置选择字段的初始值.但这不起作用，不确定是什么错误:

I'm trying to set the initial value of a Choice Field dynamically, in the view. But it doesn't work, not sure what is wrong:

views.py

...
form = FormEditGroup(initial={
            'choices_a': group.get_a(),
            'choices_i': group.get_i(),
            })

get_a()是返回打开"或关闭"的模型方法， get_i()返回管理员"或全部".

get_a() is a model method that returns "open" or "closed", get_i() returns "admins" or "all".

forms.py

class FormEditGroup(forms.Form):
    choices_a = (("closed", "Closed"), ("open", "Open"))
    choices_i = (("all", "All"), ("admins", "Admins"))

    a = forms.ChoiceField(... choices=choices_a),
    i = forms.ChoiceField(... choices=choices_i),

没有将初始值设置为 get_a()或 get_i()返回的值.

It is not setting the initial value to what get_a() or get_i() return.

推荐答案

您应将 initial 词典中的表单字段名称作为键传递.

You should pass the form field names in the initial dictionary as keys.

来自 Form上的文档.initial

此参数(如果提供)应为字典映射字段名称初始值.

更改您的'choices_a'和'choices_i'键，以分别形成字段名称 a 和 i .

Change your 'choices_a' and 'choices_i' keys to form field names a and i respectively.

尝试以下代码:

form = FormEditGroup(initial={
            'a': group.get_a(), # initial value for 'a'
            'i': group.get_i(),  # initial value for 'i'
            })

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