Django：将表单从一个应用程序添加到另一个应用程序中'；s应用程序模板（详细视图）

我想为用户添加一个表单，以添加评级和评论，从而从另一个应用程序（评级应用程序和项目应用程序）更新模型。 我已经为此挣扎了一段时间。 现在我有：

评级模型.py

class Avaliacao(models.Model):
    RATING_CHOICES = (
        (1, '1'),
        (2, '2'),
        (3, '3'),
        (4, '4'),
        (5, '5'),
    )
    created_at = models.DateTimeField(auto_now=True)
    usuario = models.ForeignKey(get_user_model(),on_delete=models.CASCADE)
    safra = models.ForeignKey(Safra,blank=False,on_delete=models.SET_NULL,null=True)
    nota = models.IntegerField(choices=RATING_CHOICES)
    comment = models.TextField()

class NotaFormulario(ModelForm):
    class Meta:
        model = Avaliacao
        fields = ['nota','comment']

urlpatterns = [
    url(r'^safra/(?P<safra_id>[0-9]+)/add_review/$',views.add_review, name='add_review')
]

def add_review(request, safra_id):
    safra = get_object_or_404(Safra, pk=safra_id)
    form = NotaFormulario(request.POST)

    if form.is_valid():
        nota = form.cleaned_data['nota']
        comment = form.cleaned_data['comment']
        usuario = request.user
        avaliacao = Avaliacao()
        avaliacao.safra = safra
        avaliacao.usuario = usuario
        avaliacao.nota = nota
        avaliacao.comment = comment
        avaliacao.created_at = datetime.datetime.now()
        avaliacao.save()

        # Always return an HttpResponseRedirect after successfully dealing
        # with POST data. This prevents data from being posted twice if a
        # user hits the Back button.
        return HttpResponseRedirect(reverse('vinhos:safra_detalhes', args=(safra.id,)))


    return render(request, 'vinhos/safra_detail.html', {'safra': safra, 'formulario': form})

forms.py

class Avaliacao(models.Model):
    RATING_CHOICES = (
        (1, '1'),
        (2, '2'),
        (3, '3'),
        (4, '4'),
        (5, '5'),
    )
    created_at = models.DateTimeField(auto_now=True)
    usuario = models.ForeignKey(get_user_model(),on_delete=models.CASCADE)
    safra = models.ForeignKey(Safra,blank=False,on_delete=models.SET_NULL,null=True)
    nota = models.IntegerField(choices=RATING_CHOICES)
    comment = models.TextField()

class NotaFormulario(ModelForm):
    class Meta:
        model = Avaliacao
        fields = ['nota','comment']

urlpatterns = [
    url(r'^safra/(?P<safra_id>[0-9]+)/add_review/$',views.add_review, name='add_review')
]

def add_review(request, safra_id):
    safra = get_object_or_404(Safra, pk=safra_id)
    form = NotaFormulario(request.POST)

    if form.is_valid():
        nota = form.cleaned_data['nota']
        comment = form.cleaned_data['comment']
        usuario = request.user
        avaliacao = Avaliacao()
        avaliacao.safra = safra
        avaliacao.usuario = usuario
        avaliacao.nota = nota
        avaliacao.comment = comment
        avaliacao.created_at = datetime.datetime.now()
        avaliacao.save()

        # Always return an HttpResponseRedirect after successfully dealing
        # with POST data. This prevents data from being posted twice if a
        # user hits the Back button.
        return HttpResponseRedirect(reverse('vinhos:safra_detalhes', args=(safra.id,)))


    return render(request, 'vinhos/safra_detail.html', {'safra': safra, 'formulario': form})

url.py

class Avaliacao(models.Model):
    RATING_CHOICES = (
        (1, '1'),
        (2, '2'),
        (3, '3'),
        (4, '4'),
        (5, '5'),
    )
    created_at = models.DateTimeField(auto_now=True)
    usuario = models.ForeignKey(get_user_model(),on_delete=models.CASCADE)
    safra = models.ForeignKey(Safra,blank=False,on_delete=models.SET_NULL,null=True)
    nota = models.IntegerField(choices=RATING_CHOICES)
    comment = models.TextField()

class NotaFormulario(ModelForm):
    class Meta:
        model = Avaliacao
        fields = ['nota','comment']

urlpatterns = [
    url(r'^safra/(?P<safra_id>[0-9]+)/add_review/$',views.add_review, name='add_review')
]

def add_review(request, safra_id):
    safra = get_object_or_404(Safra, pk=safra_id)
    form = NotaFormulario(request.POST)

    if form.is_valid():
        nota = form.cleaned_data['nota']
        comment = form.cleaned_data['comment']
        usuario = request.user
        avaliacao = Avaliacao()
        avaliacao.safra = safra
        avaliacao.usuario = usuario
        avaliacao.nota = nota
        avaliacao.comment = comment
        avaliacao.created_at = datetime.datetime.now()
        avaliacao.save()

        # Always return an HttpResponseRedirect after successfully dealing
        # with POST data. This prevents data from being posted twice if a
        # user hits the Back button.
        return HttpResponseRedirect(reverse('vinhos:safra_detalhes', args=(safra.id,)))


    return render(request, 'vinhos/safra_detail.html', {'safra': safra, 'formulario': form})

template.html（这是另一个应用程序中的我的详细信息模板）

这些字段未渲染。HTML如下所示：

<form action="/safra/6/add_review/" method="post" >
  <input type="hidden" name="csrfmiddlewaretoken" value="ofbt2lvghvsNhPuSVRDtAgP3gYoGI55AIoXcA8EpUE29Sp">

  <input type="submit" value="Enviar" class="btn btn-primary btn-large">


</form>

表单仅在我点击send一次后呈现，然后呈现“此字段是必需的”警告

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总的来说，我一直在Django中使用表单，因为在我尝试开发的应用程序上，表单总是有这样一个横截面：从一个应用程序在模型上创建实例，从另一个应用程序的另一个模型在细节视图上创建实例。

也尝试在GET方法中传递表单，并检查是否看到它。它不起作用。我认为这是关于向细节视图添加上下文的，但当我尝试在细节视图上使用get_context_数据时，我遇到了一系列新的错误。只需尝试在get方法中传递表单，并检查是否看到它。它不起作用。我认为这是关于向细节视图添加上下文的，但是当我尝试在细节视图上使用get_context_数据时，我遇到了一系列新的错误。