Django:当用户在表单提交中输入无效信息时,如何只显示一次错误?

hs1ihplo  于 2023-05-30  发布在  Go
关注(0)|答案(1)|浏览(167)

有人能告诉我如何避免错误信息显示2次吗?我想保留最上面的错误消息,但显示为红色。

https://files.slack.com/files-pri/T07EFKXHR-F058SR427RA/image.png

html:

<form hx-post="{{ request.path }}" class="modal-content p-4" enctype="multipart/form-data">
<div class="modal-header">
    <h5 class="modal-title">Ingresa tu usuario y clave</h5>
  </div>
    {% csrf_token %}

    {{ login_form.as_p }}
    {% if login_form.errors %}
        <ol class="">
            {% for field_errors in login_form.errors.values %}
                {% for error in field_errors %}
                    <li class="text-danger"><strong>{{ error|escape }}</strong></li>
                {% endfor %}
            {% endfor %}
        </ol>
    {% endif %}

<div class="modal-footer">
    <button type="submit" class="btn btn-primary">Ingresar</button>
  </div>

</form>

form.py:

class LoginForm(AuthenticationForm):
    username = forms.CharField(widget=forms.TextInput(attrs={'class': 'form-control', 'placeholder': 'Nombre de usuario'}))
    password = forms.CharField(widget=forms.PasswordInput(attrs={'class': 'form-control', 'placeholder': 'Contraseña'}))

view.py:

def login_view(request):
    if request.method == 'POST':
        login_form = LoginForm(request, data=request.POST)
        print("### Request is post")

        if login_form.is_valid():
            print("### Request is VALID")
            username = login_form.cleaned_data.get('username')
            password = login_form.cleaned_data.get('password')
            print("User name", username, "type: ", type(username))
            print("Pass", password, "type: ", type(password))
            user = authenticate(request, username=username, password=password)
            if user is not None:
                login(request, user, backend='django.contrib.auth.backends.ModelBackend')
                return HttpResponse(status=204, headers={'HX-Trigger': 'user_logged_in'})
        else:
            return render(request=request, template_name="account/email/login_form.html",
                          context={'login_form': login_form, 'errors': login_form.errors})

    else:
        login_form = LoginForm(request)
        context = {
            "login_form": login_form,
        }
        return render(request=request, template_name="account/email/login_form.html",
                      context={'login_form': login_form, 'errors': login_form.errors})

更新1:

不显式渲染HTML中的错误,让我没有任何错误。
可能与HTMX使用有关?

<form hx-post="{{ request.path }}" class="modal-content p-4" enctype="multipart/form-data">
<div class="modal-header">
    <h5 class="modal-title">Ingresa tu usuario y clave</h5>
  </div>
    {% csrf_token %}

    {{ login_form.as_p }}

<div class="modal-footer">
    <button type="submit" class="btn btn-primary">Ingresar</button>
  </div>

</form>

图片:

qxsslcnc

qxsslcnc1#

Django默认在{{ login_form.as_p }}中呈现错误。如果需要显式地呈现错误,则很容易出错,因为很容易忘记这一点。
所以有一次呈现错误,第二次呈现错误是因为你自己通过块{% if login_form.errors %} ... {% endif %}显式地做了这件事。

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