我想使用 django 中的默认表单将图像上传到数据库，但图像未上传。它显示“未选择文件”

forms.py

from django import forms

from .models import Posts

class PostForm(forms.ModelForm):

class Meta:

model = Posts

fields = ['topic','post','thumbnail','author']

models.py

class Posts(models.Model):

topic = models.ForeignKey(Topic,on_delete=models.CASCADE)

post = models.TextField()

date = models.DateTimeField(auto_now_add=True)

author = models.ForeignKey(Author,on_delete=models.CASCADE)

thumbnail = models.ImageField()

def __str__(self):

return f"{self.post[:20]}..."

class Meta:

verbose_name_plural = 'posts'

views.py

def add_post(request):

if request.method == 'POST':

form = PostForm(data=request.POST)

if form.is_valid():

form.save()

return redirect("/")

else:

form=PostForm()

context = {'form':form}

return render(request,'blog/add_post.html',context)

add_post.html

<!DOCTYPE html>

<html>

<head>

<title>Document</title>

</head>

<body>

{% csrf_token %}

</form>

</body>

</html>

当我尝试提交表单时，即使我选择了文件，缩略图字段也会自动显示“未选择文件”。所以请帮我解决这个问题！！！

MMMHUHU

浏览 102回答 2

2回答

莫回无

您必须添加upload_to：    item_image = models.ImageField(        blank = True,        null = True,        upload_to = 'item/image/',        db_column = 'ITEM_IMAGE',        verbose_name = 'IMAGE',    )请记住为媒体文件分配路径：（在 settings.py 上）MEDIA_URL = '/media/' MEDIA_ROOT = os.path.join(BASE_DIR, 'media') 在 forms.py 中：    item_image = forms.ImageField(        required = False,        label = 'Image',        widget = forms.ClearableFileInput(            attrs = {'class': 'form-control mb-2', 'placeholder':         'IMAGE',}        ),    )这是我的 github 和一个 django 项目来指导你：Github/Django

绝地无双

您需要添加enctype="multipart/form-data"到您的 html 表单： <form action="{% url 'blog:add_post' %}" method='post' enctype="multipart/form-data">    {% csrf_token %}    {{form.as_p}}    <input type='submit'></form>并传递request.FILES给您的表格：def add_post(request):  if request.method == 'POST':      form = PostForm(request.POST, request.FILES)      if form.is_valid():          form.save()          return redirect("/")  else:      form=PostForm()  context = {'form':form}  return render(request,'blog/add_post.html',context)

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