我如何链接到不在烧瓶静态文件夹中的图像 [英] How do i link to images not in Static folder in flask

问题描述

在flask中，如何提供不在静态文件夹中的图像?

In flask, how do I serve images that are not in the static folder?

我目前将用户上传的照片保存在烧瓶文件夹之外的目录中(在 openshift 上，图像当前保存在 app-root/data 下的数据文件夹中并且烧瓶文件在 app-root/repo/).

I currently save the user uploaded photos on a directory that is outside the flask folder (On openshift, image currently saving in the data folder under app-root/data and the flask files are in app-root/repo/).

在我的模板中，我如何提供图像文件?

In my templates, how do i serve the image files ?

使用url_for，我如何引用flask 文件夹之外的这些图像文件?

Using url_for, how do i reference these image files that are outside the flask folder?

- data/
 |
  -- uploads/
- repo/
 |
  -- app/
    |
     -- __init__.py

如您所见，flask 应用程序文件夹外的数据文件夹.我如何从烧瓶应用程序目录生成存储在 data/uploads(上一级)中的文件的链接是问题?

As you can see the data folder outside the flask app folder. How do i generate links to files stored in data/uploads (one level up) from the flask app directory is the question ?

推荐答案

您拥有 send_from_directory 函数可以执行您想要的操作，我要做的是声明一个名为 MEDIA_FOLDER 的常量，其中包含媒体文件所在的路径和然后，您唯一需要做的就是像这样调用函数:

You have the send_from_directory function that does what you want, what I would do is declare a constant called MEDIA_FOLDER with the path where the media files are located and then, the only thing you need to do is to call the function like this:

from config import MEDIA_FOLDER

@app.route('/uploads/<path:filename>')
def download_file(filename):
    return send_from_directory(MEDIA_FOLDER, filename, as_attachment=True)

然后，要调用它，您只需执行以下操作:

Then, to invoke it, you just do this:

{{ url_for('download_file', filename='dogs.jpg') }}

您可以在这里获得更多信息.

You can have more info about this here.

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