Django 表单：错误消息始终显示，而不仅仅是在错误之后

Question

我正在使用 Django 框架构建自己的网站。\n我制作了一个用于创建新帐户的表单。它运行良好，但我的错误消息有问题。

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当我第一次到达该页面时，我的所有错误都已显示。提交后，如果某个字段错误，则新更新的页面只显示想要的消息。

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这是我第一次到达时的页面视图

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所以，我的问题是：如何才能仅在字段错误时显示消息？我已经成功地对每条消息进行了个性化设置。

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我将我的不同 django 文件粘贴给你：

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视图.py

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@csrf_exempt\ndef create_new_user(request):\nform = UserCreateForm(request.POST)\nif request.method=="POST":\n    if form.is_valid():\n        user = form.save()\n        messages.info(request, "Merci pour votre enregistrement, vous etes maintenant connecte")\n        new_user = authenticate(username=form.cleaned_data[\'username\'],\n        password=form.cleaned_data[\'password1\']\n        )\n        login(request, new_user)\n        return HttpResponseRedirect(\'/\')\n    return render_to_response(\'lejeudesbars/register.html\', RequestContext(request, {\'form\': form}))\nelse:\n    return render(request, \'lejeudesbars/register.html\', {\'form\': form})\n

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表格.py

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class UserCreateForm(UserCreationForm):\n    captcha = ReCaptchaField(error_messages={\'required\': \'Captcha: Validation obligatoire\'})\n    email = forms.EmailField(required=True)\n    username = forms.CharField(error_messages={\'required\': \'Pseudo: Champ obligatoire\'})\n    email = forms.EmailField(error_messages={\'required\': \'Email: Champ obligatoire\'})\n    password1 = forms.CharField(widget=forms.PasswordInput(), error_messages={\'required\': \'Mot de passe: Champ obligatoire\'})\n    password2 = forms.CharField(widget=forms.PasswordInput(), error_messages={\'required\': \'Mot de passe: Confirmation obligatoire\'})\n\n\n    class Meta:\n        model = User\n        fields = ("username", "email", "password1", "password2")\n\n    def save(self, commit=True):\n        user = super(UserCreateForm, self).save(commit=False)\n        user.email = self.cleaned_data["email"]\n        if commit:\n            user.save()\n        return user`\n

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索引.html

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    <form method="post" action="/accounts/register/">\n        {% csrf_token %}\n        <h1>S\'enregistrer</h1>\n\n        {{ form.username }}\n        {% if form.errors %}\n        <p class="error-msg-register">{{ form.username.errors }}</p>\n        {% endif %}\n\n        {{ form.email }}\n        {% if form.errors %}\n        <p class="error-msg-register">{{ form.email.errors }}</p>\n        {% endif %}\n\n        {{ form.password1 }}\n        {% if form.errors %}\n        <p class="error-msg-register">{{ form.password1.errors }}</p>\n        {% endif %}\n\n        {{ form.password2 }}\n        {% if form.errors %}\n        <p class="error-msg-register">{{ form.password2.errors }}</p>\n        {% endif %}\n\n        {{ form.captcha }}\n        {% if form.errors %}\n        <p class="error-msg-register">{{ form.captcha.errors }}</p>\n        {% endif %}\n\n        <input style="padding: 10px" type="submit" value="Cr\xc3\xa9er mon compte" />\n        <input type="hidden" name="next" value="{{ next }}" />\n  </form>`\n

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预先感谢您对我的帮助！

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（对不起，我的英语不好）

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---

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感谢 Daniel Roseman，我已经解决了我的问题。\n这是我更新的views.py：

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视图.py

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@csrf_exempt\ndef create_new_user(request):\n    if request.method=="POST":\n        form = UserCreateForm(request.POST)\n        if form.is_valid():\n            user = form.save()\n            messages.info(request, "Merci pour votre enregistrement, vous etes maintenant connecte")\n            new_user = authenticate(username=form.cleaned_data[\'username\'],\n            password=form.cleaned_data[\'password1\']\n        )\n            login(request, new_user)\n    else:\n         form = UserCreateForm()\n    return render(request, \'lejeudesbars/register.html\', {\'form\': form})\n

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Answer 1

仅当 request.POST 实际上是 POST 时，才应将其传递到该字段中。所以：

def create_new_user(request):
    if request.method=="POST":
        form = UserCreateForm(request.POST)
        if form.is_valid():
            ...
    else:
        form = UserCreateForm()
    return render(request, 'lejeudesbars/register.html', {'form': form})

您也不需要那个中间的return render_to_response(...).