我需要在Django ModelForm字段上进行一些验证 . 所以我在models.py中改变了2行（就在下面） . 验证是必要的阻塞，但我找不到显示ValidationError的正确方法 . 也许在模型表单中有更简洁的方法可以做到这一点？
models.py
class Lexicon(models.Model):
[...]
alphanumeric = RegexValidator(r'^[0-9a-zA-Z]*$', _('Only alphanumeric characters are allowed'))
filename = models.CharField(_("Filename"), max_length=40, validators=[alphanumeric])
forms.py
class LexiconForm(forms.ModelForm):
class Meta:
model = Lexicon
fields = ['filename', 'language', 'comment', 'alphabet', 'case_sensitive', 'diacritics']
views.py
@login_required
def new_pls_view(request):
if request.method == 'POST':
form = LexiconForm(request.POST)
if form.is_valid():
obj = form.save(commit=False)
obj.user = request.user
obj.save()
return redirect('pls_edit')
else:
form = LexiconForm()
return render(request, 'main/new_pls.html', {
'form': form,
})
template.html
<form class="form-horizontal" method="post" action="{% url 'new_pls' %}">
{% csrf_token %}
{% if form.non_field_errors %}
<div class="alert alert-danger" role="alert">
{% for error in form.non_field_errors %}
{{ error }}
{% endfor %}
</div>
{% endif %}
[...]
{% if form.is_bound %}
{% if form.filename.errors %}
{% for error in form.filename.errors %}
<div class="invalid-feedback">
{{ error }}
</div>
{% endfor %}
{% endif %}
{% if form.filename.help_text %}
<small class="form-text text-muted">{{ form.filename.help_text }}</small>
{% endif %}
{% endif %}
{% render_field form.filename type="text" class+="form-control" id="plsFilename" placeholder=form.filename.label %}
正如@Alasdair建议的那样用 {{ form }} 替换我的整个表单是有效的，所以我猜我的模板渲染有问题 .
1 回答
我只是简单地替换了我的错误打印并打印错误！