未显示 Django ValidationErrors

Question

我在用户选择未来日期时对日期选择器应用验证。到目前为止，表单没有保存无效条目，但问题是它没有显示该字段的错误消息。这是我到目前为止尝试过的：

forms.py

class PostPagos(forms.ModelForm):

    def clean(self):
        cleaned_data = super(PostPagos, self).clean()
        fecha = cleaned_data.get('fecha')
        hoy = datetime.date.today()
        if fecha > hoy:
            raise forms.ValidationError(
                'La Feha no puede ser mayor al día de hoy')

    class Meta:
        model = Pagos
        fields = ('carro', 'pago', 'fecha', 'semana', 'renta')
        widgets = {'fecha': forms.DateInput(attrs={'type': 'date'}),
                   'semana': forms.DateInput(attrs={'type': 'week'})
                   }

views.py

class PagosCreate(CreateView):
    form_class = PostPagos
    template_name = "AC/add_expense.html"

    def form_valid(self, form):
        object = form.save(commit=False)
        object.startweek, object.endweek = self.weekdatetimeconverter(
            object.semana)
        object.save()
        return super(PagosCreate, self).form_valid(form)

    def weekdatetimeconverter(self, semana):
        d = semana
        startweek = datetime.datetime.strptime(d + '-1', "%Y-W%W-%w")
        endweek = datetime.datetime.strptime(d + '-0', "%Y-W%W-%w")
        return (startweek, endweek)

models.py

class Pagos(models.Model):

    carro = models.ForeignKey(
        Carros, on_delete=models.CASCADE, blank=False, null=False)
    pago = models.DecimalField(max_digits=6, decimal_places=2)
    fecha = models.DateField(
        auto_now=False, auto_now_add=False, blank=True, null=True)
    semana = models.CharField(max_length=20)
    startweek = models.DateField(
        auto_now=False, auto_now_add=False, blank=True, null=True)
    endweek = models.DateField(
        auto_now=False, auto_now_add=False, blank=True, null=True)
    renta = models.ForeignKey(
        Renta, on_delete=models.PROTECT, blank=False, null=False)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    class Meta:
        verbose_name_plural = "Pagos"

    def get_absolute_url(self):
        return reverse('pagos')

HTML

 {% extends "base.html" %}

    {% load widget_tweaks %}



    {% block content %}
    <div class='container'>
        <form method="POST">
            {% csrf_token %}
            {% for hidden in form.hidden_fields %}
            {{ hidden }}
            {% endfor %}
            {% for field in form.visible_fields %}
            <div class="form-group">
                <div class='column'>
                    <label>{{ field.label_tag }}</label>
                    {% render_field field class="form-control" %}
                    {% for error in field.errors %}
                    <span class="help-block">{{ error }}</span>
                    {% endfor %}
                </div>
            </div>
            {% endfor %}
            <div class="form-group">
                <button type="submit" class="btn btn-success">
                    <span class="glyphicon glyphicon-ok"></span> Save
                </button>
                <a href="{% url 'pagos' %}" class="btn btn-default">Cancel</a>
            </div>

        </form>
    </div>

    {% endblock content%}

I'm using django-widget-tweaks

Answer 1

再次阅读文档后[https://docs.djangoproject.com/en/3.0/ref/forms/validation/#cleaning-a-specific-field-attribute][1]

我的一个错误是我没有做 return，事实证明所需的代码比我拥有的代码简单得多，这里是：

forms.py

class PostPagos(forms.ModelForm):

    def clean_fecha(self):
        fecha = self.cleaned_data['fecha']

        if fecha > datetime.date.today():
            raise forms.ValidationError(
                'La Fecha no puede ser mayor al día de hoy')
        return fecha

    class Meta:
        model = Pagos
        fields = ('carro', 'pago', 'fecha', 'semana', 'renta')
        widgets = {'fecha': forms.DateInput(attrs={'type': 'date'}),
                   'semana': forms.DateInput(attrs={'type': 'week'})
                   }

未显示 Django ValidationErrors

Django ValidationErrors not being displayed

django

django-forms

django-templates

django-views

django-widget-tweaks