django 图像给我一个错误“此字段是必需的。”
[英]django image gives me an error "This field is required."
问题描述
When I send an image to the bank to save, it always returns this message "This field is required."
当我将图像发送到银行进行保存时，它总是返回此消息“此字段为必填项”。 but I fill the field with an image but it always returns this error.但我用图像填充该字段，但它总是返回此错误。
Views观点
def criar (request):
form = forms_user()
if request.method == 'GET':
return render(request, 'create.html', {'form': form})
if request.method == 'POST':
form = forms_user(request.POST, request.FILES )
if form.is_valid():
form.save()
messages.add_message(request, constants.SUCCESS, 'Cadastro realizado com sucesso.')
form_clean = forms_user()
return render(request, 'create.html', {'form': form_clean})
else:
print(form.errors)
messages.add_message(request, constants.ERROR, f'{form.errors}')
return render(request, 'create.html', {'form': form})
Models楷模
class items(models.Model):
titulo:models.CharField(max_length=30, blank=False)
descricao = models.TextField(max_length=50, blank=False)
usuario = models.CharField(max_length=20, blank=False)
Preco = models.BooleanField(blank=False)
royalties = models.PositiveIntegerField(blank=False)
image = models.ImageField(upload_to='image/', null=True, blank=True)
Forms Forms
class forms_user (forms.ModelForm):
class Meta:
model = items
fields = '__all__'
HTML HTML
<form id="contact" action="" method="post" enctype="multipart/form-data">
<fieldset>
<label for="file">Seu arquivo</label>
{% render_field form.image type="file" id="file" name="myfiles[]" %}
</fieldset>
</form>
Here in the forms I just put the form and the IMG field so it doesn't get too big but the other fields I put everything right.在 forms 中，我只放置了表单和 IMG 字段，因此它不会变得太大，但其他字段我都放置正确。
1 个解决方案
解决方案1
0 2023-01-31 12:47:09
At first there's a typo in model field titulo it should be = not : .起初在titulo字段标题中有一个拼写错误，它应该是= not : 。
Secondly, you should always return an HttpResponseRedirect after dealing with POST data, the tip is not specific to Django, it's a good web practice in general, so use following view:其次，你应该总是在处理POST数据后返回一个 HttpResponseRedirect，这个提示并不特定于 Django，它通常是一个很好的 web 实践，所以使用下面的视图：
def criar(request):
if request.method == 'GET':
return render(request, 'create.html', {'form': forms_user()})
else:
form = forms_user(request.POST, request.FILES )
if form.is_valid():
form.save()
messages.add_message(request, constants.SUCCESS, 'Cadastro realizado com sucesso.')
return redirect("success")
else:
print(form.errors)
messages.add_message(request, constants.ERROR, f'{form.errors}')
return render(request, 'create.html', {'form': forms_user()})
If you have created modelform then render image field as below, and you can also remove the action attribute as Django by default takes current page route.如果你已经创建了 modelform 然后渲染图像字段如下，你也可以删除action属性，因为 Django 默认采用当前页面路由。
Html: Html：
<form id="contact" method="POST" enctype="multipart/form-data">
<fieldset>
<label for="file">Seu arquivo</label>
{{form.image}}
</fieldset>
</form>
urls.py网址.py
urlpatterns=[
path("success/", views.success, name="success")
...
]
success.html:成功.html：
<body>
<h1> The form has been successfully submitted </h1>
</body>
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