Python 需要图像上传django表单的帮助吗
我已经拉最后上传的图像使用以下代码Python 需要图像上传django表单的帮助吗,python,django,forms,django-models,Python,Django,Forms,Django Models,我已经拉最后上传的图像使用以下代码 class categoryForm(forms.Form): name = forms.CharField(widget=forms.TextInput(attrs={'class':'box'}),max_length=32,label='Category',required=True) is_active = forms.BooleanField(required=False) id = forms.CharField(widget=f
class categoryForm(forms.Form):
name = forms.CharField(widget=forms.TextInput(attrs={'class':'box'}),max_length=32,label='Category',required=True)
is_active = forms.BooleanField(required=False)
id = forms.CharField(widget=forms.HiddenInput,required=False)
photo = forms.ImageField(
required=False,
label='Upload photo',
initial=True,
help_text='max. 4 megabytes'
)
def __init__(self, data,**kwargs):
super(categoryForm, self).__init__(data, **kwargs)
if self.data['photo']!='':
self.fields['photo'].initial=self.data['photo']
我在填充更新表单时传递了数据
p=Category.objects.get(id='%s'%(target_id))
formdata = categoryForm({'name':p.name,'is_active':p.is_active,'id':p.id,'photo':p.image()})
它完美地显示了最初的图像
因为我还有FileField,所以我需要在调用categoryForm的操作页面中传递额外的参数,即
formdata = categoryForm(request.POST,request.FILES)
这个额外的参数给了我下面的错误
__init__() takes exactly 2 arguments (3 given)
如果我删除request.FILESinit()工作正常,但我无法上载图像:)
请指导我将
\uuuuu init\uuuu
函数更改为该函数是否有帮助
def __init__(self, data, *args, **kwargs):
super(categoryForm, self).__init__(data, **kwargs)
if self.data['photo']!='':
self.fields['photo'].initial=self.data['photo']
我不确定你的代码是否正确,如果你说它有效。。。然后它就起作用了。 错误来自这里:
def __init__(self, data,**kwargs):
super(categoryForm, self).__init__(data, files, **kwargs)
if self.data['photo']!='':
self.fields['photo'].initial=self.data['photo']
或者你可以这样做:
formdata = categoryForm(data = request.POST, files = request.FILES)
def __init__(self, *args, **kwargs):
super(categoryForm, self).__init__(*args, **kwargs)
if self.data['photo']!='':
self.fields['photo'].initial=self.data['photo']