我正在按照this教程在Django项目中创建视频上载程序,遇到以下错误:
..src/video/views.py”,showvideo中的第9行 videofile=lastvideo.videofile AttributeError:“非类型”对象没有属性“videofile”
我确信我遗漏了一些显而易见的东西,并且已经寻找了一段时间的答案。如果有任何帮助,我将不胜感激
views.py
from django.shortcuts import render
from .models import VideoUpload
from .forms import VideoForm
def showvideo(request):
lastvideo= VideoUpload.objects.last()
videofile= lastvideo.videofile
form= VideoForm(request.POST or None, request.FILES or None)
if form.is_valid():
form.save()
context= {'videofile': videofile,
'form': form
}
return render(request, 'video.html', context)
forms.py
from django import forms
from .models import VideoUpload
class VideoForm(forms.ModelForm):
class Meta:
model = VideoUpload
fields = ["name", "videofile"]
models.py
from django.db import models
class VideoUpload(models.Model):
name= models.CharField(max_length=500)
videofile= models.FileField(upload_to='videos/', null=True, verbose_name="")
def __str__(self):
return self.name + ": " + str(self.videofile)
from django.conf import settings
from django.contrib import admin
from django.urls import path
from django.conf.urls.static import static
from video.views import (
showvideo,
)
urlpatterns = [
path('showvideo', showvideo, name='showvideo'),
]
if settings.DEBUG:
urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
仅供参考,将模型名称更新为“VideoUpload”,而不是教程
数据库中没有最后的视频记录。为了防止在这种情况下出错,您可以将行:
videofile= lastvideo.videofile
更改为这将防止抛出错误。或者,您可以将整个位放入try/except块中
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