Django 2.0 throws AttributeError: ''Image' object has no attribute 'replace'"

Question

在Django 2.0中尝试将html图像设置为我的静态路径+图像路径时，django开发服务器显示以下错误：

Error during template rendering

In template /Users/arikanevsky/webappgit/ari/templates/ari/software.html, error at line 5

'Image' object has no attribute 'replace'

图像 class 来自 models.py:

class Image(models.Model):
    """This class contains a reference to the ImageField.

    It is part of a base of models comprising the webapp.

    """
    uplpath = '%Y/%m/%d'
    dfltpath = 'page_images/Y/M/D/no_img.jpg'

    image = models.ImageField(upload_to=uplpath, default=dfltpath)

    def __str__(self):
        """Return human readable string of self.image."""
        return self.image.name

来自 urls.py 的 url 模式：

urlpatterns = [
    path('', views.index, name='index'),
    path('<int:page_id>/bio/', views.bio, name='bio'),
    path('<int:page_id>/software/', views.software, name='software'),
    path('<int:page_id>/publications/',
     views.publications, name='publications'),
    path('<int:page_id>/career/', views.career, name='career'),
    path('<int:page_id>/education/', views.education, name='education'),
    ]

索引方法来自views.py:

def index(request):
    page_list = get_list_or_404(Page.objects.all())
    return render(request, 'ari/index.html', {'page_list': page_list})

index.html文件（按命名使用）：

{% if page_list %}
<ul>
{% for page in page_list %}
    <a href="/ari/{{page.id}}/bio"><p>My bio page</p></a>
    <a href="/ari/{{page.id}}/career"><p>My career page</p></a>
    <a href="/ari/{{page.id}}/software"><p>My software page</p></a>
    <a href="/ari/{{page.id}}/publications"><p>My publication page</p>. </a>
{% endfor %}
</ul>
{% else %}
<p>No pages are available :(</p>
{% endif %}

来自views.py的软件方法：

def software(request, page_id):
    software_page = get_object_or_404(Page, pk=page_id)
    return render(request, 'ari/software.html', {'software_page': software_page})

software.html 文件:

{% load static %}

<img src = "{% static software_page.image %}" alt = "Profile Picture"/>

app目录结构如下:

（我相信我们可以忽略 .ipynb 和 pycache 目录）

|-akanev
|  |-__pycache__
|-ari
|  |-.ipynb_checkpoints
|  |-__pycache__
|  |-migrations
|  |  |-__pycache__
|  |-templates
|  |  |-ari
|  |  |  |-page_images

settings.py中定义的相关环境目录路径：

MEDIA_ROOT: '/Users/arikanevsky/webappgit/ari/templates/ari/page_images'

MEDIA_URL: ''

BASE_DIR: '/Users/arikanevsky/webappgit'

STATICFILES_DIRS: []

STATIC_ROOT: None

STATIC_URL: '/page_images/'

TEMPLATES:  
[{'APP_DIRS': True,
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [],
'OPTIONS': {'context_processors':   ['django.template.context_processors.debug',
                                   'django.template.context_processors.request',
                                 'django.contrib.auth.context_processors.auth',
                                 'django.contrib.messages.context_processors.messages']}}]

software.html文件中的img src行抛出错误：

Exception Type: AttributeError at /ari/4/software/
Exception Value: 'Image' object has no attribute 'replace'

希望能提供有关此神秘错误可能是什么的所有线索！

谢谢:)

Answer 1

您使用的静态模板标签有误。它应该用于您要在页面上使用的静态文件。例如链接到样式表、javascript 或非用户上传的图像。

查看此处了解更多信息： https://docs.djangoproject.com/en/2.0/howto/static-files/

您正在尝试从模型中上传的文件中获取图片 - 可能由用户上传完成（或以非 "static" 的方式完成）。这是通过媒体 url 和媒体根设置来处理的。看这里： https://docs.djangoproject.com/en/2.0/topics/files/

获取图像的正确方法是：

<img src = "{{ software_page.image.url }}" alt = "Profile Picture"/>

此致，

安德烈亚斯

Django 2.0 throws AttributeError: ''Image' object has no attribute 'replace'"

Django 2.0 throws AttributeError: ''Image' object has no attribute 'replace'"

django

django-templates

django-models

django-views

django-staticfiles