Django表单向导保存并转到上一步 [英] Django form wizard save and go to previous step
问题描述
我尝试过
< input name =wizard_goto_stepclass =btn btn-primary btn-largetype =submitvalue =prev/> ;
和
< button class =btn btn-info btn-large
name =wizard_goto_steptype =submitvalue ={{wizard.steps.prev}}>
{%transprev step%}
< / button>
但这两个都不会做我想做的。
如果您希望在返回上一个表单之前验证并保存当前表单中的数据,则需要覆盖你的子类
方法。您要查找的方法是 SessionWizardView
中的post() self.storage.set_step_data()
和 self.storage.set_step_files()
保存当前表单数据。
一个粗略的例子:
def post(self,* args ,** kwargs):
go_to_step = self.request.POST.get('wizard_goto_step',无)#获取步骤名称
form = self.get_form(data = self.request.POST,files = self.request.FILES)
current_index = self.get_step_index(self.steps.current)
goto_index = self.get_step_index(go_to_step)
如果current_index> ; goto_index:
如果form.is_valid():
self.storage.set_step_data(self.steps.current,
self.process_step(form))
self.storage.set_step_files(
self.process_step_files(form))
else:
return self.render(form)
return super(NominateFormWizard,self).post(* args ,* * kwargs)
I have a working django formwizard which when I hit the previous button doesn't validate the current input.
I've tried variations on
<input name="wizard_goto_step" class="btn btn-primary btn-large" type="submit" value="prev"/>
and
<button class="btn btn-info btn-large"
name="wizard_goto_step" type="submit" value="{{ wizard.steps.prev }}">
{% trans "prev step" %}
</button>
but neither of these seems to do what I want to do.
If you want it to validate and save the data on the current form before stepping back to a previous form, you need to override the post()
method in your subclass of SessionWizardView
. The methods you're looking for are self.storage.set_step_data()
and self.storage.set_step_files()
to save the current form data.
A rough example:
def post(self, *args, **kwargs):
go_to_step = self.request.POST.get('wizard_goto_step', None) # get the step name
form = self.get_form(data=self.request.POST, files=self.request.FILES)
current_index = self.get_step_index(self.steps.current)
goto_index = self.get_step_index(go_to_step)
if current_index > goto_index:
if form.is_valid():
self.storage.set_step_data(self.steps.current,
self.process_step(form))
self.storage.set_step_files(self.steps.current,
self.process_step_files(form))
else:
return self.render(form)
return super(NominateFormWizard, self).post(*args, **kwargs)
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