问题描述
cleaned_data ['avatar']（在forms.py中）存在错误：预期的str，字节或os.pathLike对象，而不是nonetype
我使用的是Django-allauth，但不习惯使用...。所以我添加了一个以sign_in形式显示的头像字段，但提交时出现了错误。
这是我的代码：models.py
from django.db import models
from django.contrib.auth.models import AbstractUser
def get_path_name(instance,filename):
path = 'media/avatar/'
name = instance.user.id + "-" + instance.user.email
path = path + name
return path
# custom User model
class CustomUser(AbstractUser):
avatar = models.ImageField(upload_to= get_path_name,blank=True,null=True)
我的表格：
from django.contrib.auth import get_user_model
from django.contrib.auth.forms import UserCreationForm,UserChangeForm
from django.core.files.images import get_image_dimensions
from django import forms
class CustomUserCreationForm(UserCreationForm):
class Meta:
model = get_user_model()
fields = ('email','username','avatar')
def clean_avatar(self):
avatar = self.cleaned_data['avatar']
try:
w,h = get_image_dimensions(avatar)
# validate dimensions
max_width = max_height = 100
if w > max_width or h > max_height:
raise forms.ValidationError(
u'Please use an image that is '
'%s x %s pixels or smaller.' % (max_width,max_height))
# validate content type
main,sub = avatar.content_type.split('/')
if not (main == 'image' and sub in ['jpeg','pjpeg','gif','png']):
raise forms.ValidationError(u'Please use a JPEG,'
'GIF or PNG image.')
# validate file size
if len(avatar) > (20 * 1024):
raise forms.ValidationError(
u'Avatar file size may not exceed 20k.')
except AttributeError:
"""
Handles case when we are updating the user profile
and do not supply a new avatar
"""
pass
return avatar
class CustomUserChangeForm(UserChangeForm):
class Meta:
model = get_user_model()
fields = ('email','avatar')
我的模板：
{% extends '_base.html' %}
{% load crispy_forms_tags %}
{% block title %}
{% endblock title %}
{% block content %}
<h2>Sign Up</h2>
<form method="post">
{% csrf_token %}
{{ form|crispy }}
<button class="btn btn-success" type="submit">Sign Up</button>
</form>
{% endblock content %}
我的设置
AUTH_USER_MODEL = 'accounts.CustomUser'
我已经检查迁移工作，因为我可以看到数据库中的字段。但是，当然要清空以前的错误。
我还有一个问题是，化身字段没有出现在/ admin / change / user中，但是我将该字段放在CustomUserChangeForm（UserChangeForm）中：
这是我的admin.py：
from django.contrib import admin
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth import get_user_model
from .forms import CustomUserCreationForm,CustomUserChangeForm
CustomUser = get_user_model()
class CustomUserAdmin(UserAdmin):
add_form = CustomUserCreationForm
form = CustomUserChangeForm
model = CustomUser
list_display = ['email','avatar']
admin.site.register(CustomUser,CustomUserAdmin)
错误回溯：
Environment:
Request Method: POST
Request URL: http://127.0.0.1:8000/accounts/signup/
Django Version: 3.1.2
Python Version: 3.7.7
Installed Applications:
['django.contrib.admin','django.contrib.auth','django.contrib.contenttypes','django.contrib.sessions','django.contrib.messages','django.contrib.staticfiles','bootstrap4','crispy_forms','allauth','allauth.account','django.contrib.sites','accounts','home']
Installed Middleware:
['django.middleware.security.SecurityMiddleware','django.contrib.sessions.middleware.SessionMiddleware','django.middleware.common.CommonMiddleware','django.middleware.csrf.CsrfViewMiddleware','django.contrib.auth.middleware.AuthenticationMiddleware','django.contrib.messages.middleware.MessageMiddleware','django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback (most recent call last):
File "/Users/hima/venv/lib/python3.7/site-packages/django/core/handlers/exception.py",line 47,in inner
response = get_response(request)
File "/hima/venv/lib/python3.7/site-packages/django/core/handlers/base.py",line 179,in _get_response
response = wrapped_callback(request,*callback_args,**callback_kwargs)
File "/Users//hima/venv/lib/python3.7/site-packages/django/views/generic/base.py",line 70,in view
return self.dispatch(request,*args,**kwargs)
File "/Users//hima/venv/lib/python3.7/site-packages/django/utils/decorators.py",line 43,in _wrapper
return bound_method(*args,**kwargs)
File "/Users//hima/venv/lib/python3.7/site-packages/django/views/decorators/debug.py",line 89,in sensitive_post_parameters_wrapper
return view(request,**kwargs)
File "/Users//hima/venv/lib/python3.7/site-packages/allauth/account/views.py",line 215,in dispatch
return super(SignupView,self).dispatch(request,line 81,in dispatch
**kwargs)
File "/Users//hima/venv/lib/python3.7/site-packages/allauth/account/views.py",line 193,in dispatch
**kwargs)
File "/Users//hima/venv/lib/python3.7/site-packages/django/views/generic/base.py",line 98,in dispatch
return handler(request,line 103,in post
if form.is_valid():
File "/Users//hima/venv/lib/python3.7/site-packages/django/forms/forms.py",line 177,in is_valid
return self.is_bound and not self.errors
File "/Users//hima/venv/lib/python3.7/site-packages/django/forms/forms.py",line 172,in errors
self.full_clean()
File "/Users//hima/venv/lib/python3.7/site-packages/django/forms/forms.py",line 374,in full_clean
self._clean_fields()
File "/Users/hima/venv/lib/python3.7/site-packages/django/forms/forms.py",line 395,in _clean_fields
value = getattr(self,'clean_%s' % name)()
File "/Users//hima/accounts/forms.py",line 15,in clean_avatar
w,h = get_image_dimensions(avatar)
File "/Users/hima/venv/lib/python3.7/site-packages/django/core/files/images.py",in get_image_dimensions
file = open(file_or_path,'rb')
Exception Type: TypeError at /accounts/signup/
Exception Value: expected str,bytes or os.pathLike object,not nonetype
解决方法
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