django - 如何让 FormSet 在我的视图中验证？
问题描述
我正在用 FormSets 做一些不寻常的事情。我正在尝试使用查询集作为我的表单集的输入。这似乎在这一点上工作得很好。无效的是表单验证。提前感谢您的任何想法。由于我不会打扰人们的原因，我无法通过传统的外键创建这种关系。
我的模型.py
class Team(models.Model):
team_name = models.CharField(max_length=264,null=False,blank=False)
class Player(models.Model):
player_name = models.CharField(max_length=264,null=False,blank=False)
team_pk = models.integerfield(Team,null=True)
我的观点.py
class CreateTeamView(LoginRequiredMixin,UpdateView):
model = Team
form_class = CreateTeamForm
template_name = 'create_team.html'
def get_context_data(self, **kwargs):
context = super(CreateTeamView, self).get_context_data(**kwargs)
dropdown = self.request.GET.get("dropdown", None)
queryset = Player.objects.filter(company_pk=dropdown)
player_form = PlayerFormSet(queryset=queryset,dropdown=dropdown)
context['player_form'] = player_form
context['dropdown'] = dropdown
return context
def get_form_kwargs(self):
kwargs = super(CreateTeamView,self).get_form_kwargs()
kwargs['user'] = self.request.user
kwargs['dropdown'] = self.request.GET.get("dropdown")
return kwargs
def get(self, request, *args, **kwargs):
dropdown=self.request.GET.get("dropdown")
self.object = self.get_object()
context = self.get_context_data(object=self.object)
self.object = None
context = self.get_context_data(object=self.object)
form_class = self.get_form_class()
form = self.get_form(form_class)
form_kwargs = self.get_form_kwargs()
player_form = PlayerFormSet(dropdown=dropdown)
return self.render_to_response(
self.get_context_data(form=form,
player_form=player_form,
context=context,
))
def form_valid(self, form, player_form):
self.object = form.save()
player_form.instance = self.object
player_form.save()
def form_invalid(self, form, player_form):
return self.render_to_response(
self.get_context_data(form=form,
player_form=player_form,
))
def post(self, request, *args, **kwargs):
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
dropdown=self.request.GET.get("dropdown")
player_form = PlayerFormSet(dropdown,self.request.POST)
if (form.is_valid() and player_form.is_valid()):
return self.form_valid(form, player_form)
else:
return self.form_invalid(form, player_form)
我的表格.py
class CreateTeamForm(forms.ModelForm):
class Meta:
model = Team
fields=['team_name',]
PlayerFormSet = inlineformset_factory(Team, Player, extra=0, fields=['player_name',])
class PlayerFormSet(PlayerFormSet,BaseInlineFormSet):
def __init__(self, dropdown, *args, **kwargs,):
super(PlayerFormSet, self).__init__(*args, **kwargs)
self.queryset = Player.objects.filter(teamp_pk=dropdown)
我的模板...
<form method="POST" enctype="multipart/form-data" id="forms">
{% csrf_token %}
{{ player_form.management_form }}
{{ player_form.non_form_errors }}
{% for hidden in player_form.management_form %}
{{ hidden }}
{% endfor %}
{% for form in player_form.forms %}
{{ form.id }}
<div class="inline {{ player_form.prefix }}">
<div class="leftwidth22">
<div class="width52">
<h2 class="floatright23">Player Name - </h2>
</div>
</div>
<div class="rightwidth53">
<h2 class="width70">
{{ form.player_name }}
</h2>
</div>
{% if player_form.non_form_errors %}
<h3 class="spacer12">
{{ player_form.non_form_errors }}
</h3>
{% endif %}
{% if form.player_name.errors %}
<h3 class="spacer12">
{{ form.player_name.errors }}
</h3>
{% endif %}
{% endfor %}
</form>
好消息是这一切都在起作用，因为它现在正在将我所追求的表单集数据传递给表单。我现在坚持的是表单集处理。因为表单数据是全新的......我意识到我需要通过代码的 form_valid 部分进行某种循环，但我无法完全理解......
我试过了...
data = self.get_context_data()
formset = data['player_form']
if formset.is_valid():
self.object = form.save()
formset.instance = self.object
formset.save()
但我确实收到零错误消息。如果我不更改任何内容，表单将提交。但这违背了目的。我需要能够更改表单中的数据，然后提交。
更新......我已经更进一步......在我的帖子功能中使用下面的代码......在我的基于类的视图中......
def post(self, request, *args, **kwargs):
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
dropdown=self.request.GET.get("dropdown")
team_form = TeamFormSet(dropdown,self.request.POST)
if (form.is_valid() and team_form.is_valid()):
players = team_form.save(commit=False)
for player in players:
player = form.save(commit=False)
player.save()
return self.form_valid(form, team_form)
这种作品。有时。如果我通过视图更新表单并删除一个条目......保存将不起作用，说 save() 禁止以防止由于未保存的相关对象而导致数据丢失。我今天大部分时间都在查看原子保存和不同程度的表单集保存，但没有任何效果。提前感谢您对我可能做错的任何想法。
更新...
team_form = TeamForm(request.POST)
player_form = PlayerForm(self.request.POST)
if player_form.is_valid():
for form in team_form:
print("works")
player_form.save()
return HttpResponseRedirect(reverse('Team:main_menu'))
else:
for form in team_form:
if form.is_valid():
form.save(commit=False)
print("nope")
else:
print(form.errors)
# return HttpResponseRedirect(reverse('Team:team_menu'))
return self.form_invalid(form, playerform)
我现在可以遍历我的表单集，并确定错误在哪里，但是当我这样做时，它会返回对象没有属性“对象”。
这是追溯数据...
异常类型：TypeError at /Company/update_saved_new_company/ 异常值：form_invalid() 采用 2 个位置参数，但给出了 3 个
对象的回溯数据没有属性“对象”
Traceback (most recent call last):
File "C:\Users\steve\Envs\Final5Production\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
response = get_response(request)
File "C:\Users\steve\Envs\Final5Production\lib\site-packages\django\core\handlers\base.py", line 181, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\steve\Envs\Final5Production\lib\site-packages\django\views\generic\base.py", line 70, in view
return self.dispatch(request, *args, **kwargs)
File "C:\Project\Project\mixins.py", line 46, in dispatch
return super().dispatch(request, *args, **kwargs)
File "C:\Users\steve\Envs\Final5Production\lib\site-packages\django\contrib\auth\mixins.py", line 52, in dispatch
return super().dispatch(request, *args, **kwargs)
File "C:\Users\steve\Envs\Final5Production\lib\site-packages\django\views\generic\base.py", line 98, in dispatch
return handler(request, *args, **kwargs)
File "C:\Company\views.py", line 9283, in post
return super(UpdateSavedNewCompanyView, self).form_invalid(company_contact_form)
File "C:\Users\steve\Envs\Final5Production\lib\site-packages\django\views\generic\edit.py", line 61, in form_invalid
return self.render_to_response(self.get_context_data(form=form))
File "C:\Company\views.py", line 9036, in get_context_data
context = super(UpdateSavedNewCompanyView, self).get_context_data(**kwargs)
File "C:\Users\steve\Envs\Final5Production\lib\site-packages\django\views\generic\edit.py", line 67, in get_context_data
return super().get_context_data(**kwargs)
File "C:\Users\steve\Envs\Final5Production\lib\site-packages\django\views\generic\detail.py", line 94, in get_context_data
if self.object:
Exception Type: AttributeError at /Company/update_saved_new_company/
Exception Value: 'UpdateSavedNewCompanyView' object has no attribute 'object'
解决方案
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