Question

根据文档here，可以访问.ini文件中的设置，以便在整个应用程序中使用，即使在无法访问请求对象的情况下也是如此。我觉得这非常有用，因为我想为每个.ini规定不同的数据库字符串，并且不仅可以在__init__访问它们，而且可以从应用程序的其他地方访问它们。但是，无论何时何地尝试，settings的值都是None。为什么？（金字塔v1.5.7）

registry = pyramid.threadlocal.get_current_registry()
settings = registry.settings
debug_frobnosticator = settings['debug_frobnosticator']

以下是应用初始化的方式：

from pyramid.config import Configurator
from pyramid.authentication import AuthTktAuthenticationPolicy
from pyramid.authorization import ACLAuthorizationPolicy
from pyramid.security import authenticated_userid
from bang.model import RootFactory, groupFinder
from pyramid.renderers import JSON
import json
from datetime import datetime, date
from bson.objectid import ObjectId
from apscheduler.schedulers.background import BackgroundScheduler
from apscheduler.jobstores.mongodb import MongoDBJobStore
from pytz import utc
import platform
from bang.classes import *  # the db string is required in this module
import logging
from datetime import timedelta

# main app config
def main(global_config, **settings):
    authn_policy = AuthTktAuthenticationPolicy(
        secret='xxxxxx',
        callback=groupFinder,
        hashalg='sha512',
        include_ip=True,
        timeout=36000)
    authz_policy = ACLAuthorizationPolicy()
    config = Configurator(
        settings=settings,
        root_factory=RootFactory)
    config.set_authentication_policy(authn_policy)
    config.set_authorization_policy(authz_policy)



    logging.getLogger("apscheduler.scheduler").setLevel(logging.ERROR)
    logging.getLogger("apscheduler.executors.default").setLevel(logging.ERROR)
    logging.getLogger("requests.packages.urllib3.connectionpool").setLevel(logging.ERROR)

    ### first use of db from bang.classes here
    # set house_id auto_inc to the highest current house_id
    new_int = Asset().find().sort('house_id_int', -1)[0].house_id_int
    Asset()._database['Sequences'].find_and_modify({'_id': 'house_id_int'}, {'$set': {'seq': new_int}}, upsert=True)

    # set house_id auto_inc to the highest current house_id
    new_int = Contract().find().sort('code_int', -1)[0].code_int
    Contract()._database['Sequences'].find_and_modify({'_id': 'code_int'}, {'$set': {'seq': new_int}}, upsert=True)

    def get_user(request):
        user = User().find_one({'_id': ObjectId(authenticated_userid(request))}, fields={'password': False})
        return {'_id': user._id, 'defaults': user.defaults, 'full_name': user.full_name, 'first_name': user.first_name,
            'last_name': user.last_name, 'login_count': user.login_count, 'permissions': user.permissions}

    # if this Pyramid instance is an Agent host, then start a scheduler
    agent = Agent().find_one({'host_name': platform.node()})
    if agent:

        # created background scheduler
        scheduler = BackgroundScheduler(
            jobstores={
            'mongo': MongoDBJobStore(client=cn, database='foobar', collection='ScheduledJobs_%s' % agent.host_name, timezone=utc,
                                     job_defaults={'coalesce': True, 'misfire_grace_time': 86400})})
        log.info('created scheduler for agent_host %s' % agent.host_name)
        # start the scheduler
        scheduler.start()

        def get_scheduler(request):
            return scheduler
        config.add_request_method(get_scheduler, 'scheduler', reify=True)

    for agent in Agent().find({'host_name': platform.node()}):
        # add a job to scan the agent
        log.info('added scan schedule for %s on %s' % (agent.name, agent.host_name))
        scheduler.add_job(agent_scan, trigger='interval', args=[str(agent._id)], jobstore='mongo',
                      id='%s_scan' % agent._id, seconds=agent.scan_cycle, replace_existing=True)
        # add a job to process the agent's joblist
        log.info('added jobs schedule for %s on %s' % (agent.name, agent.host_name))
        scheduler.add_job(agent_jobs, trigger='interval', args=[str(agent._id)], jobstore='mongo',
                      id='%s_jobs' % agent._id, seconds=10, start_date=datetime.utcnow() + timedelta(seconds=60), replace_existing=True)

    # add the authenticated user to each request
    config.add_request_method(get_user, 'user', reify=True)

    # custom json adapters
    custom_json = JSON()

    def haystack_obj_adapter(obj, request):
        return obj.json

    config.add_renderer('json', custom_json)

    # routes for standard static images
    config.add_route('apple-touch', '/apple-touch-icon.png')
    # etc

    # routes
    config.add_route('remote.files', '/remote/files/{method}')
    # etc

    config.add_static_view('/', 'static', cache_max_age=0)

    config.scan()

    return config.make_wsgi_app()


TypeError: 'NoneType' object has no attribute '__getitem__'

Answer 1

示例代码缺少完整的回溯和查看代码。

它实际上并没有以您期望的方式运作。可能没有设置线程局部，因为这个函数主要是为pyramid.testing和单元测试设计的，如果我已经正确理解的话。正常请求和单元测试的线程生命周期不同。

请在视图中使用request.registry并明确传递registry。如果您需要访问registry中的main()，请从config.registry传递它。

Python金字塔设置在注册表中不可用

1 个答案: