Django ModelForm错误消息未显示在模板中

Question

我在文档后面创建了一些自定义错误消息(尽我所能(，但我没有收到任何错误，更不用说我的自定义错误了。这是我的代码：

表单.py

class UploadFileForm(forms.ModelForm):
class Meta:
model = Job
fields = ['jobID','original_file']
labels = {
'jobID': _('Job ID'),
'original_file': _('File'),
}
error_messages = {
'jobID': {
'max_length': _("Job ID is limited to 50 characters."),
'required': _("Please provide a Job ID."),
'invalid': _("Job ID must be a combination of letters, numbers, - and _.")
},
'original_file': {
'required': _("Please provide a file."),
'validators': _("Please ensure you are selecting a zipped (.zip) GDB."),
},
}
help_texts = {
'original_file': _('Please provide a zipped (.zip) GDB.'),
}

upload.html

<form method = "POST" action="{% url 'precheck:upload' %}" enctype="multipart/form-data" name="uploadForm">
{% csrf_token %}
{% for field in form %}
<div>
<strong>{{ field.errors }}</strong>
{{ field.label_tag }} {{ field }}
{% if field.help_text %}
<p class ="help-text">{{ field.help_text }}</p>
{% endif %}
</div>
{% endfor %}
<br />
<button type="button" id="uploadButton" data-loading-text="Loading..." class="btn btn-primary" autocomplete="off" style="margin: auto 20%; ">Upload</button>
</form>

视图.py

def upload(request):
if request.method == 'POST':
form = UploadFileForm(request.POST, request.FILES, user = request.user)
if form.is_valid():
form.save()
request.session['jobID'] = request.POST['jobID']
#job = Job.objects.filter(user_id = request.user.id).filter(jobID = request.POST['jobID']).latest()
# initialize(job)
return render(request,'precheck/run_precheck.html')
form = UploadFileForm()
historyList = Job.objects.filter(user_id = request.user.id)[:10]
return render(request, 'precheck/upload.html',{'form': form, 'history': historyList})

我已经包括了所有我认为相关的内容，如果你还需要什么，请告诉我。

Answer 1

问题是，如果表单无效，则将表单重置为初始表单：

form = UploadFileForm()
historyList = Job.objects.filter(user_id = request.user.id)[:10]
return render(request, 'precheck/upload.html',{'form': form, 'history': historyList})

您的流应该呈现绑定表单(带有错误(，因此它应该是：

if request.method == 'POST':
form = UploadFileForm(request.POST, request.FILES, user = request.user)
if form.is_valid():
# do stuff for valid form
return redirect
elif request.method == 'GET':
form = UploadFileForm()
# flow common for GET and invalid form
return render(request, template, {'form': form})