Python Django：如何使用动态（非模型）数据预填充 FormView？
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Django: How to pre-populate FormView with dynamic (non-model) data?
提问by pete
I have a FormView view, with some additional GET context supplied using get_context_data():
我有一个 FormView 视图，使用 get_context_data() 提供了一些额外的 GET 上下文：
class SignUpView(FormView):
template_name = 'pages_fixed/accounts/signup.html'
form_class = SignUpForm
def get_context_data(self, **kwargs):
context = super(SignUpView, self).get_context_data(**kwargs)
context = {
'plans': common.plans,
'pricing': common.pricing,
}
return context
This works fine. However, I also have some values in session (not from any bound model) which I would like to pre-populate into the form. These vary depending on user's actions on previous page(s). I know (from my other post) that I can pass the form into the context (with initial=) but is it possible in a FormView situation per above?
这工作正常。但是，我在会话中也有一些值（不是来自任何绑定模型），我想将它们预填充到表单中。这些因用户在前一页上的操作而异。我知道（从我的另一篇文章中）我可以将表单传递到上下文中（with initial=）但是在上面的 FormView 情况下是否可能？
采纳答案by user772401
You can override the FormView class's 'get_initial' method. See herefor more info,
您可以覆盖 FormView 类的“get_initial”方法。请参阅此处了解更多信息，
e.g.
例如
def get_initial(self):
"""
Returns the initial data to use for forms on this view.
"""
initial = super().get_initial()
initial['my_form_field1'] = self.request.something
return initial
'get_initial' should return a dictionary where the keys are the names of the fields on the form and the values are the initial values to use when showing the form to the user.
'get_initial' 应该返回一个字典，其中键是表单上字段的名称，值是向用户显示表单时使用的初始值。
