Question

我正在测试示例代码验证图像字段（Django custom validation in model form for imagefield (max file size etc.)）：

models.py

inline.f137c7f1f4e2a52a2fb9.bundle.js:1 Uncaught SyntaxError: Unexpected token <
polyfills.25e42e2a7a0746e9ff75.bundle.js:1 Uncaught SyntaxError: Unexpected token <
main.0d9f8e7be2ccd1472551.bundle.js:1 Uncaught SyntaxError: Unexpected token <

admin.py

from django.db import models
from filer.fields.image import FilerImageField

class Event(models.Model):

   # (...)
    banner = FilerImageField(verbose_name='Banner')

注册图像时出现

错误，而不是django-admin。版本：Pillow == 4.3.0，Python == 3.6

from django.contrib import admin
from django import forms
from PIL import Image
from .models import Event


class EventForm(forms.ModelForm):
    class Meta:
        model = Event
        fields = '__all__'

    def clean_banner(self):
        image = self.cleaned_data.get('banner', False)
        if image:
            img = Image.open(image)
            img.load()
            width, height = img.size

            max_width = 879
            max_height = 392

            if width > max_width or width < max_width or height > max_height or height < max_height: 
                raise forms.ValidationError('Imagem está com dimensão incorreta: %s x %s pixels. Insira uma imagem com %s x %s pixels.' 
                                            %(width, height, max_width, max_height))
            # Máx 3MB
            if len(image) > (3 * 1024 * 1024):
                raise forms.ValidationError('Arquivo de imagem muito grande (máximo 3MB).')

            name_type, ext = image.content_type.split('/')
            if not (name_type == 'image' and ext.lower() in ['png', 'jpg', 'jpeg']):
                raise forms.ValidationError('Por favor, use imagem em formato JPG, JPEG ou PNG.')
        else:
            raise forms.ValidationError('Não foi possível ler a imagem carregada.')
        return image

我在函数clean_banne中尝试了Traceback (most recent call last): File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\PIL\Image.py", line 2534, in open fp.seek(0) AttributeError: 'Image' object has no attribute 'seek' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\core\handlers\exception.py", line 41, in inner response = get_response(request) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\core\handlers\base.py", line 187, in _get_response response = self.process_exception_by_middleware(e, request) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\core\handlers\base.py", line 185, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\contrib\admin\options.py", line 551, in wrapper return self.admin_site.admin_view(view)(*args, **kwargs) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\utils\decorators.py", line 149, in _wrapped_view response = view_func(request, *args, **kwargs) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\views\decorators\cache.py", line 57, in _wrapped_view_func response = view_func(request, *args, **kwargs) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\contrib\admin\sites.py", line 224, in inner return view(request, *args, **kwargs) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\contrib\admin\options.py", line 1508, in add_view return self.changeform_view(request, None, form_url, extra_context) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\utils\decorators.py", line 67, in _wrapper return bound_func(*args, **kwargs) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\utils\decorators.py", line 149, in _wrapped_view response = view_func(request, *args, **kwargs) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\utils\decorators.py", line 63, in bound_func return func.__get__(self, type(self))(*args2, **kwargs2) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\contrib\admin\options.py", line 1408, in changeform_view return self._changeform_view(request, object_id, form_url, extra_context) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\contrib\admin\options.py", line 1440, in _changeform_view if form.is_valid(): File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\forms\forms.py", line 183, in is_valid return self.is_bound and not self.errors File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\forms\forms.py", line 175, in errors self.full_clean() File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\forms\forms.py", line 384, in full_clean self._clean_fields() File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\django\forms\forms.py", line 405, in _clean_fields value = getattr(self, 'clean_%s' % name)() File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\integrafundaj\events\admin.py", line 19, in clean_banner img = Image.open(image) File "C:\Users\Lidy Monteiro\Developer\integra-fundaj\.myvenv\lib\site-packages\PIL\Image.py", line 2536, in open fp = io.BytesIO(fp.read()) AttributeError: 'Image' object has no attribute 'read'，但它不起作用。怎么解决？问题出在python版本中？

Answer 1

根据Pillow documentation，Python 3.6尚不支持。请尝试另一个版本的python。

Django / PIL：AttributeError：＆＃39; Image＆＃39;对象没有属性＆＃39; read＆＃39;

1 个答案: