我正在尝试创建一个页面,用户可以在其中上传带有其帖子的图像。 图像上载正在另一应用程序中工作,但是在此应用程序中,每当我提交表单时,除图像外的所有信息都将插入数据库中。 如果我打开管理面板并上传图片,则图片上传成功,只有通过模板无法上传。
这是我的模特:
def validate_image(image):
file_size = image.file.size
limit_mb = 3
if file_size > limit_mb * 1048576:
raise ValidationError("Max size of file is %s MB" % limit_mb)
class Posting (models.Model):
poster = models.ForeignKey(User, related_name='poster_posting', verbose_name='poster')
description = models.TextField(max_length=200, verbose_name=_('description'))
pictures = models.ImageField(
upload_to='postings/',
verbose_name=_('Posting_picture'),
blank=True, null=True,
validators=[validate_image],
)
def __str__(self):
return "Posting #{}".format(self.pk)
def filename(self):
if self.pictures:
return os.path.basename(self.pictures.name)
return ''
这是视图:
def posting(request):
if request.method == "POST":
form = Publish(request.POST)
if form.is_valid():
post = form.save(commit=False)
post.poster = request.user
post.save()
messages.success(request, _("your request was posted successfully"))
return redirect("posting:posting_detail", pk=post.id)
else:
form = Publish()
return render (request, 'list_posting.html',{'form': form})
表格:
class Publish(forms.ModelForm):
"""publishing of listing"""
description = forms.CharField(
widget=forms.Textarea(
attrs={'rows': 6, }
)
)
class Meta:
model = Posting
fields = (
'description',
'pictures')
最后是模板:
[...]
<form method="POST" enctype="multipart/form-data" style="margin-bottom: 60px;font-family: Muli, sans-serif;" >
{% csrf_token %}
<div class="form-row" id="Notes" style="padding-right: 20px;padding-left: 20px;">
<div class="col"><input name="description" id="listing_description" required class="form-control" placeholder=" {% trans 'Items to send - Example: I want to send 3 shirts, one children book and one science book (maximum of 150 characters)' %}" maxlength="150" style="margin-top: 36px;"></div>
{% if form.description.errors %}<small class="form-text text-muted" style="color: red">{{ form.description.errors }}</small> {% endif %}
</div>
<div class="form-row" id="Pictures" style="padding-right: 20px;padding-left: 20px;" >
<div class="col">
<input accept="image/" type="file" class="filestyle" name="pictures" data-size="sm" style="padding-top: 33px;" >
<small class="form-text text-muted" >{% trans 'You can only upload one picture. The size cannot exceed 3Mb.' %}</small> </div>
</div>
<div class="form-row text-right" id="Buttons" style="padding-right: 20px;padding-left: 20px;padding-top: 29px;">
<div class="col">
<div class="btn-group" role="group"><a class="btn btn-light" role="button" href="{% url '...' %}" style="margin-right: 20px;">{%trans 'cancel'%}</a><button class="btn btn-dark" type="submit">{% trans 'submit' %}</button></div>
</div>
</div>
当我提交表单时,在调试中,图片字段为空白,因此我不确定问题是否在我的html代码内。
答案 0 :(得分:0)
真正的问题是您没有将pictures
附加到表单上。将表单的生成方式更改为:
views.py:
form = Publish(request.POST, request.FILES)
如果您遵循django docs on forms rendering,也可以稍微改善模板。
您甚至如何创建没有ForeignKey
属性的on_delete
?
在模型中,您将用户称为发布者,而不是发件人,因此也请对其进行更改:
views.py:
post.poster = request.user
答案 1 :(得分:0)
您是否更改了settings.py配置?
另外,您还需要在views.py中包含minlat = input.readFloat();
minlon = input.readFloat();
maxlat = input.readFloat();
maxlon = input.readFloat();
kdtreeCoastline = (KDTree) input.readObject();
kdtreeBicycle = (KDTree) input.readObject();
----
output.writeFloat(minlat);
output.writeFloat(minlon);
output.writeFloat(maxlat);
output.writeFloat(maxlon);
output.writeObject(kdtreeCoastline);
output.writeObject(kdtreeBicycle);
,以便在您的form.py中渲染文件或图像