python - 提供位于 Flask 蓝图文件夹下的静态文件

Question

我有一个包含模板和静态文件的 Flask 蓝图。模板呈现正确，但链接的 CSS 文件返回 404 未找到。如何提供位于蓝图文件夹下的静态文件？

app/
  __init__.py
  auth/
    __init__.py
    static/
      style.css
    templates/
      index.html

auth = Blueprint('auth', __name__, template_folder='templates')

@auth.route('/')
def index():
    return render_template('index.html')

<link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='style.css') }}">

Answer 1

通过传递 static_folder 告诉蓝图它的静态文件夹在哪里，然后使用 url_for 生成蓝图上 static 路由的 url。 This is described in the docs.

auth = Blueprint('auth', __name__, template_folder='templates', static_folder='static')

url_for('auth.static', filename='style.css')

此解决方案仅在蓝图具有 url_prefix 时有效。根据文档:

However, if the blueprint does not have a url_prefix, it is not possible to access the blueprint’s static folder. This is because the URL would be /static in this case, and the application’s /static route takes precedence. Unlike template folders, blueprint static folders are not searched if the file does not exist in the application static folder.

在这种情况下，一种解决方案可能是将样式表放入主 static 目录。