flask_bootstrap.Bootstrap object' has no attribute 'load_css'

Question

提示错误：flask_bootstrap.Bootstrap object' has no attribute 'load_css'

bootstrap-flask在自己的电脑里用得挺好的，但一挂到服务器上就报错。

因为是小白，想快速搭好一个好看点的网站，所以用了flask-bootstrap，现在卡死在这里了：）

希望能够帮忙解答一下，谢谢！

github地址

部分代码如下：

# myapp.py
from flask_bootstrap import Bootstrap
app = Flask(__name__)
bootstrap = Bootstrap(app)
...

{# homepage.html #}
{% from 'bootstrap/nav.html' import render_nav_item %}

{% block styles %}
<!-- Bootstrap CSS -->
{{ bootstrap.load_css() }}
{% endblock %}
{% block scripts %}
<!-- Optional JavaScript -->
{{ bootstrap.load_js() }}
{% endblock %}
...

完整的错误信息如下：

ERROR:flask.app:Exception on / [GET]
Traceback (most recent call last):
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/flask/app.py", line 2311, in wsgi_app
    response = self.full_dispatch_request()
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/flask/app.py", line 1834, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/flask/app.py", line 1737, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/flask/_compat.py", line 36, in reraise
    raise value
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/flask/app.py", line 1832, in full_dispatch_request
    rv = self.dispatch_request()
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/flask/app.py", line 1818, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "./myapp.py", line 28, in home
    return render_template('homepage.html',bootstrap = bootstrap)
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/flask/templating.py", line 135, in render_template
    context, ctx.app)
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/flask/templating.py", line 117, in _render
    rv = template.render(context)
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/jinja2/asyncsupport.py", line 76, in render
    return original_render(self, *args, **kwargs)
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/jinja2/environment.py", line 1008, in render
    return self.environment.handle_exception(exc_info, True)
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/jinja2/environment.py", line 780, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/srv/data/web/vhosts/default/local/lib/python3.7/site-packages/jinja2/_compat.py", line 37, in reraise
    raise value.with_traceback(tb)
  File "/srv/data/web/vhosts/default/templates/homepage.html", line 5, in top-level template code
    {% block styles %}
  File "/srv/data/web/vhosts/default/templates/homepage.html", line 7, in block "styles"
    {{ bootstrap.load_css() }}
jinja2.exceptions.UndefinedError: 'flask_bootstrap.Bootstrap object' has no attribute 'load_css'```

Answer 1

建议自己不要用 flask-bootstrap 插件，而是自己导入 bootstrap。
参见这个资料：https://www.jianshu.com/p/d30...