Django管理表单流程文件上传：'；在MemoryUploadedFile'；对象没有属性'；宽度'；

我有这个型号

class CauroselImage(models.Model):
    title = models.CharField(max_length=200, blank=True)
    description = models.CharField(max_length=400, blank=True)
    image = models.ImageField(upload_to=settings.UPLOAD_DIR,)
    visible = models.BooleanField(default=True)

    def __str__(self):
        return self.title

我想设置图像文件的最小尺寸，我已经找到了

forms.py

文件

class CauroselImageForm(forms.ModelForm):
    class Meta:
        model = CauroselImage
        exclude = ('',)

    def clean(self):
        cleaned_data = self.cleaned_data
        image = cleaned_data.get('image')
        if image.width < 1300 or image.height < 400:
            raise forms.ValidationError("Image dimensions is too small, minimum is 1300x400")
        return cleaned_data

然而，它抛出了这个错误

Environment:


Request Method: POST
Request URL: http://127.0.0.1:8000/admin/pages/cauroselimage/1/change/

Django Version: 3.1.2
Python Version: 3.8.5
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'guides',
'pages',
'sorl.thumbnail',
'ckeditor',
'django.contrib.sites',
'django.contrib.humanize']
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 "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/core/handlers/base.py", line 179, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/options.py", line 614, in wrapper
    return self.admin_site.admin_view(view)(*args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/utils/decorators.py", line 130, in _wrapped_view
    response = view_func(request, *args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/views/decorators/cache.py", line 44, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/sites.py", line 233, in inner
    return view(request, *args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/options.py", line 1656, in change_view
    return self.changeform_view(request, object_id, form_url, extra_context)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/utils/decorators.py", line 43, in _wrapper
    return bound_method(*args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/utils/decorators.py", line 130, in _wrapped_view
    response = view_func(request, *args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/options.py", line 1534, in changeform_view
    return self._changeform_view(request, object_id, form_url, extra_context)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/options.py", line 1573, in _changeform_view
    form_validated = form.is_valid()
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/forms/forms.py", line 177, in is_valid
    return self.is_bound and not self.errors
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/forms/forms.py", line 172, in errors
    self.full_clean()
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/forms/forms.py", line 375, in full_clean
    self._clean_form()
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/forms/forms.py", line 402, in _clean_form
    cleaned_data = self.clean()
File "/home/sam/code/kpsga/pages/forms.py", line 26, in clean
    if image.width < 1300 or image.height < 400:

Exception Type: AttributeError at /admin/pages/cauroselimage/1/change/
Exception Value: 'InMemoryUploadedFile' object has no attribute 'width'

环境：
申请方式：邮寄
请求URL:http://127.0.0.1:8000/admin/pages/cauroselimage/1/change/
Django版本：3.1.2
Python版本：3.8.5
已安装的应用程序：
['django.contrib.admin'，
“django.contrib.auth”，
“django.contrib.contenttypes”，
“django.contrib.sessions”，
“django.contrib.messages”，
“django.contrib.staticfiles”，
“指南”，
“页面”，
“Soll.缩略图”，
“编辑”，
“django.contrib.sites”，
“django.contrib.personalize”]
已安装的中间件：
['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.xframeoptions中间件']
回溯（最近一次呼叫最后一次）：
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/core/handlers/exception.py”，第47行，在内部
响应=获取响应（请求）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/core/handlers/base.py”，第179行，在“获取”响应中
响应=包装的回调（请求，*回调参数，**回调参数）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/contrib/admin/options.py”，第614行，在包装器中
返回self.admin\u site.admin\u视图（视图）（*args，**kwargs）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/utils/decorators.py”，第130行，在包装视图中
响应=查看功能（请求，*args，**kwargs）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/views/decorators/cache.py”，第44行，在_wrapped_view_func中
响应=查看功能（请求，*args，**kwargs）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/contrib/admin/sites.py”，第233行，在内部
返回视图（请求、*args、**kwargs）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/contrib/admin/options.py”，第1656行，在change_视图中
返回self.changeform\u视图（请求、对象id、表单url、额外上下文）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/utils/decorators.py”，第43行，在
返回边界_方法（*args，**kwargs）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/utils/decorators.py”，第130行，在包装视图中
响应=查看功能（请求，*args，**kwargs）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/contrib/admin/options.py”，第1534行，在changeform_视图中
返回self.\u changeform\u视图（请求、对象id、表单url、额外上下文）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/contrib/admin/options.py”，第1573行，在“变更形式”视图中
form\u validated=form.is\u validate（）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/forms/forms.py”，第177行，在中有效
返回self.is_绑定而不是self.errors
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/forms/forms.py”，第172行，出现错误
self.full_clean（）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/forms/forms.py”，第375行，完全干净
自我清洁表格（）
文件“/home/sam/code/envs/kpsga/lib/python3.8/site packages/django/forms/forms.py”，第402行，格式为
cleaned_data=self.clean（）
文件“/home/sam/code/kpsga/pages/forms.py”，第26行，干净
如果image.width<1300或image.height<400：
异常类型：AttributeError at/admin/pages/cauroselimage/1/change/
异常值：“InMemoryUploadedFile”对象没有属性“width”

您可以从django使用：

从django.core.files.images导入获取图像尺寸
类CAURESLIMAGEFORM（forms.ModelForm）：
...
def清洁（自清洁）：
宽度、高度=获取图像尺寸（自清理数据获取（'image'））
如果宽度小于1300或高度小于400：
raise forms.ValidationError（“图像尺寸太小，最小为1300x400”）
返回已清除的数据

方法

get\u image\u dimensions

使用python

PIL

（python图像库）

get\u image\u dimensions

返回给定图像的（宽度、高度） 打开的文件或路径。将“close”（关闭）设置为True以在 如果它最初处于打开状态，则结束

---

您应该使用django的

get\u image\u dimensions

或

PIL

。如您所见，MemoryUploadedFile中的

没有维度属性。
Environment:


Request Method: POST
Request URL: http://127.0.0.1:8000/admin/pages/cauroselimage/1/change/

Django Version: 3.1.2
Python Version: 3.8.5
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'guides',
'pages',
'sorl.thumbnail',
'ckeditor',
'django.contrib.sites',
'django.contrib.humanize']
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 "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/core/handlers/base.py", line 179, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/options.py", line 614, in wrapper
    return self.admin_site.admin_view(view)(*args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/utils/decorators.py", line 130, in _wrapped_view
    response = view_func(request, *args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/views/decorators/cache.py", line 44, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/sites.py", line 233, in inner
    return view(request, *args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/options.py", line 1656, in change_view
    return self.changeform_view(request, object_id, form_url, extra_context)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/utils/decorators.py", line 43, in _wrapper
    return bound_method(*args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/utils/decorators.py", line 130, in _wrapped_view
    response = view_func(request, *args, **kwargs)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/options.py", line 1534, in changeform_view
    return self._changeform_view(request, object_id, form_url, extra_context)
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/contrib/admin/options.py", line 1573, in _changeform_view
    form_validated = form.is_valid()
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/forms/forms.py", line 177, in is_valid
    return self.is_bound and not self.errors
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/forms/forms.py", line 172, in errors
    self.full_clean()
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/forms/forms.py", line 375, in full_clean
    self._clean_form()
File "/home/sam/code/envs/kpsga/lib/python3.8/site-packages/django/forms/forms.py", line 402, in _clean_form
    cleaned_data = self.clean()
File "/home/sam/code/kpsga/pages/forms.py", line 26, in clean
    if image.width < 1300 or image.height < 400:

Exception Type: AttributeError at /admin/pages/cauroselimage/1/change/
Exception Value: 'InMemoryUploadedFile' object has no attribute 'width'

from django.core.files.images import get_image_dimensions

class CauroselImageForm(forms.ModelForm):
    
    ...

    def clean(self):
        width, height = get_image_dimensions(self.cleaned_data.get('image'))
        if width < 1300 or height < 400:
            raise forms.ValidationError("Image dimensions is too small, minimum is 1300x400")
        return cleaned_data