Question

点击表单上的上传按钮后，我会在'Job ID'字段下方找到一个项目符号，指示“此字段是必填字段。”即使我输入了字段值。这是我的代码：

forms.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."),
            },
            NON_FIELD_ERRORS: {
                'unique_together': "%(model_name)s's %(field_labels)s are not unique.",
            }
        }

models.py：

from __future__ import unicode_literals

from django.db import models
from django.utils import timezone

class Job(models.Model):
    user = models.ForeignKey('auth.User')
    original_file = models.FileField()
    jobID = models.CharField(max_length=50)
    rev = models.IntegerField()
    create_date = models.DateTimeField(default = timezone.now)

    def save(self):
        "Get last value of rev considering jobID and User and increment"
        "see https://stackoverflow.com/questions/1065089/auto-increment-a-value-in-django-with-respect-to-the-previous-one"
        last_rev = Job.objects.filter(user=self.user).filter(jobID=self.jobID).order_by('-rev')
        if last_rev:
            rev = last_rev[0].rev + 1
        else:
            rev = 1
        super(Job,self).save()

    def __unicode__(self):
        return self.jobID + " rev " + str(self.rev)

    class Meta:
        indexes = [
            models.Index(fields=['user','jobID']),
        ]
        unique_together = ("user","jobID","rev")
        ordering = ['-create_date']

views.py

from __future__ import unicode_literals

from django.shortcuts import render
from django.http import HttpResponseRedirect
from .forms import UploadFileForm
from .models import Job

# Create your views here.
def upload(request):
    if request.method == 'POST':
        form = UploadFileForm(request.POST, request.FILES)
        if form.is_valid():
            form.save()
            return render(request,'precheck/prestage.html')
    else:
            form = UploadFileForm()
    return render(request, 'precheck/upload.html',{'form': form})

def success(request):
    return render(request, 'precheck/prestage.html')

upload.html

{% extends 'base.html' %}

{% block content %}

<h2>Upload File</h2>

{% if error %}
{{ error }}
<br />
<br />
{% endif %}

<form method = "POST" action="{% url 'precheck:upload' %}">
    {% csrf_token %}

    {{ form.as_p }}

    <br />
    <input type="submit" class="btn btn-primary" value="Upload">

</form>

{% endblock %}

我尝试手动构建具有相同结果的表单（即不使用模型表单）。谢谢你的帮助。

编辑：将表单更改为包含enctype="multipart/form-data"可以解决问题：

<form method = "POST" action="{% url 'precheck:upload' %}" enctype="multipart/form-data">

Answer 1

错误不是针对jobID，而是针对original_file。这是因为您没有在表单元素上使用enctype="multipart/form-data"属性。

当在Django modelForm上填充字段时，“此字段是必需的”

1 个答案: