Question

我正在尝试在包api中的蓝图authorisation.py内访问访问应用程序配置。我正在初始化__init__.py中使用的authorisation.py中的蓝图。

__初始化__。PY

from flask import Blueprint
api_blueprint = Blueprint("xxx.api", __name__, None)
from api import authorisation

authorisation.py

from flask import request, jsonify, current_app

from ..oauth_adapter import OauthAdapter
from api import api_blueprint as api

client_id = current_app.config.get('CLIENT_ID')
client_secret = current_app.config.get('CLIENT_SECRET')
scope = current_app.config.get('SCOPE')
callback = current_app.config.get('CALLBACK')

auth = OauthAdapter(client_id, client_secret, scope, callback)


@api.route('/authorisation_url')
def authorisation_url():
    url = auth.get_authorisation_url()
    return str(url)

我收到RuntimeError：在应用程序上下文之外工作

我理解为什么会这样，但是访问这些配置设置的正确方法是什么？

---- ----更新暂时，我已经做到了。

@api.route('/authorisation_url')
def authorisation_url():
    client_id, client_secret, scope, callback = config_helper.get_config()
    auth = OauthAdapter(client_id, client_secret, scope, callback)
    url = auth.get_authorisation_url()
    return str(url)

Answer 1

您可以使用flask.current_app取代蓝图中的应用。

from flask import current_app as app
@api.route('/info/', methods = ['GET'])
def get_account_num():
    num = app.config["INFO"]

注意： current_app代理仅在请求的上下文中可用。

Answer 2

重载record方法似乎很容易：

api_blueprint = Blueprint('xxx.api',  __name__, None)
api_blueprint.config = {}

@api_blueprint.record
def record_params(setup_state):
  app = setup_state.app
  api_blueprint.config = dict([(key,value) for (key,value) in app.config.iteritems()])

Answer 3

要构建tbicr's答案，以下是覆盖register method示例的示例：

from flask import Blueprint

auth = None

class RegisteringExampleBlueprint(Blueprint):
    def register(self, app, options, first_registration=False):
        global auth

        config = app.config
        client_id = config.get('CLIENT_ID')
        client_secret = config.get('CLIENT_SECRET')
        scope = config.get('SCOPE')
        callback = config.get('CALLBACK')

        auth = OauthAdapter(client_id, client_secret, scope, callback)

        super(RegisteringExampleBlueprint,
              self).register(app, options, first_registration)

the_blueprint = RegisteringExampleBlueprint('example', __name__)

使用record decorator的示例：

from flask import Blueprint
from api import api_blueprint as api

auth = None

# Note there's also a record_once decorator
@api.record
def record_auth(setup_state):
    global auth

    config = setup_state.app.config
    client_id = config.get('CLIENT_ID')
    client_secret = config.get('CLIENT_SECRET')
    scope = config.get('SCOPE')
    callback = config.get('CALLBACK')

    auth = OauthAdapter(client_id, client_secret, scope, callback)

Answer 4

蓝图有register method，当您register blueprint时会调用。因此，您可以覆盖此方法或使用record decorator来描述依赖于app的逻辑。

Answer 5

current_app方法很好，但您必须有一些请求上下文。如果你没有（像测试一样的前期工作，例如），你最好放置

with app.test_request_context('/'):

在此current_app来电之前

。

您将拥有RuntimeError: working outside of application context。

Answer 6

您需要导入由app返回的主Flask()变量（或您称之为的任何变量）：

from someplace import app
app.config.get('CLIENT_ID')

或者在请求中执行此操作：

@api.route('/authorisation_url')
def authorisation_url():
    client_id = current_app.config.get('CLIENT_ID')
    url = auth.get_authorisation_url()
    return str(url)

Answer 7

您还可以将蓝图包装在函数中并将app作为参数传递：

蓝图：

def get_blueprint(app):
    bp = Blueprint()
    return bp

主：

from . import my_blueprint
app.register_blueprint(my_blueprint.get_blueprint(app))

如何在蓝图中访问app.config？

7 个答案: