Question

我有一个django formset的问题，我无法向自己解释。这是涉及的代码。

forms.py：

class ScoreForm(forms.ModelForm):
    class Meta:
        model = models.Score
        fields = (
            'period',
            'home_team_score',
            'away_team_score',
        )


ScoreFormSet = forms.inlineformset_factory(
    models.Fixture,
    models.Score,
    form=ScoreForm,
    extra=5
)

models.py：

class Score(models.Model):
    fixture = models.ForeignKey(Fixture, related_name="score")
    user = models.ForeignKey(settings.AUTH_USER_MODEL, related_name="score")
    inserted_at = models.DateTimeField(auto_now_add=True, blank=True, null=True)
    period = models.IntegerField(blank=True, null=True)
    home_team_score = models.IntegerField(blank=True, null=True)
    away_team_score = models.IntegerField(blank=True, null=True)

    class Meta:
        db_table = 'score'

views.py：

class InsertScoreView(CreateView):
    form_class = forms.ScoreForm
    model = Score
    template_name = 'gamestream/insert_score.html'
    success_url = "/gamestream/score_list/"

    def get_context_data(self, **kwargs):
        fixture = Fixture.objects.get(id=self.kwargs['fixture_id'])
        data = super(InsertScoreView, self).get_context_data(**kwargs)
        if self.request.POST:
            data['scores'] = forms.ScoreFormSet(self.request.POST)
            data['fixture'] = fixture
        else:
            data['scores'] = forms.ScoreFormSet()
            data['fixture'] = fixture
        return data

    def form_valid(self, form, **kwargs):
        user = self.request.user
        fixture = Fixture.objects.get(id=self.kwargs['fixture_id'])
        context = self.get_context_data()
        formset = forms.ScoreFormSet(self.request.POST)
        if formset.is_valid():
            scores = formset.save(commit=False)
            for score in scores:
                score.fixture = fixture
                score.user = user
                score.save()

        return super(InsertScoreView, self).form_valid(form)

和模板：

<div class="container">
  <h3>Please insert scores for the following match:</h3>
  <h4>{{ fixture.starting_time }} -- {{ fixture.league.league_name }} -- {{ fixture.home_team }} vs {{ fixture.away_team }}</h4>

  <form action="." method="POST">
    {% csrf_token %}
    {{ scores.management_form }}
    {% for form in scores %}
      <p>{{ form }}</p>
    {% endfor %}
      <input type="submit" value="Insert score" class="submit" />
  </form>
</div>

我得到这种行为：我能够插入我想要的所有值。如果将1或5插入并保存到数据库中则无关紧要（这是正确的，这就是我想要实现的目标）。问题是它看起来像是额外的100％空白表单被发送并且不验证（因为需要夹具字段）！我已经删除了Score模型的fixture字段中的约束（用于测试目的），实际上一个完全空白的行被插入到db中。这就是为什么我相信一个空白表格正在发送。

我无法解释这种行为。这个空白形式（或其他什么）来自哪里？

谢谢，维托里奥

Answer 1

经过多次尝试后我改变了视图的类型：从CreateView到FormView，它突然开始正常工作。

我无法真正提供更多相关信息，因为我真的不知道这两个类之间代码的区别是什么。

django formset发布一个额外（和空白）行

1 个答案: