Django : 모듈 수준 db 쿼리를 감지하십시오.

modul 수준 (일명 가져 오기 시간)의 데이터베이스 쿼리는 장고에서 문제를 일으킬 수 있습니다.Django : 모듈 수준 db 쿼리를 감지하십시오.

은 참조 : https://groups.google.com/forum/#!topic/django-developers/7JwWatLfP44/discussion

문제 :

실제 DB는, 테스트에 액세스 도착하지 테스트 데이터베이스를. 앱 준비 신호에
원숭이 패치가 너무 늦게
...

내가 준비 신호가 발생 응용 프로그램 전에 내 데이터베이스에 액세스하는 특정 파이썬 소스 라인을 감지 할 수있는 방법

출처

2017-03-23 guettli

해결책을 찾았습니다. 그것은 "더러운"것이지만 작동합니다. 당신이 get_new_connection

django/db/backends/postgresql/base.py의에 assert 0을 추가하는 경우

그런 다음 당신은 매우 긴 역 추적을 참조하십시오. 그것은 당신이 너무 일찍 데이터베이스에 액세스하는 곳을 밝혀줍니다.

물론 개발 환경에서만이 작업을 수행해야합니다.

대략적으로 sqlite에서 작동해야합니다. 당신은 /site-packages/django/을 포함하는 모든 행을 건너 뛰는, 아래에서 위로 스택을 이동하여이 문제를 찾을 수 src/foobar/foobar/views/issue/legacy_edit2.py

에 버그 라인은이 경우

[email protected]:~$ py.test -k ... 
Traceback (most recent call last): 
    File "/home/foobar_vums_d/bin/py.test", line 11, in <module> 
    sys.exit(main()) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/_pytest/config.py", line 49, in main 
    return config.hook.pytest_cmdline_main(config=config) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py", line 724, in __call__ 
    return self._hookexec(self, self._nonwrappers + self._wrappers, kwargs) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py", line 338, in _hookexec 
    return self._inner_hookexec(hook, methods, kwargs) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py", line 333, in <lambda> 
    _MultiCall(methods, kwargs, hook.spec_opts).execute() 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/_pytest/vendored_packages/pluggy.py", line 596, in execute 
    res = hook_impl.function(*args) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/pytest_djangotools/hooks.py", line 46, in pytest_cmdline_main 
    import consolescript_django 
    File "/home/foobar_vums_d/src/djangotools/consolescript_django/__init__.py", line 11, in <module> 
    django.setup() 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/__init__.py", line 18, in setup 
    apps.populate(settings.INSTALLED_APPS) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/apps/registry.py", line 115, in populate 
    app_config.ready() 
    File "/home/foobar_vums_d/src/djangotools/djangotools/apps.py", line 19, in ready 
    url_patterns = get_resolver(None).url_patterns 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/utils/functional.py", line 33, in __get__ 
    res = instance.__dict__[self.name] = self.func(instance) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 417, in url_patterns 
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/utils/functional.py", line 33, in __get__ 
    res = instance.__dict__[self.name] = self.func(instance) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/core/urlresolvers.py", line 410, in urlconf_module 
    return import_module(self.urlconf_name) 
    File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module 
    __import__(name) 
    File "/home/foobar_vums_d/src/foobar-vums/foobar_vums/etc/rooturls.py", line 11, in <module> 
    urlpatterns = collect_urlpatterns_from_apps() 
    File "/home/foobar_vums_d/src/djangotools/djangotools/utils/urlresolverutils.py", line 124, in collect_urlpatterns_from_apps 
    urls_module = importlib.import_module(app_import_string + '.urls') 
    File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module 
    __import__(name) 
    File "/home/foobar_vums_d/src/foobar/foobar/urls.py", line 310, in <module> 
    urlpatterns.append(url(r'^', include(collect_urlpatterns_from_package(views)))) 
    File "/home/foobar_vums_d/src/djangotools/djangotools/utils/urlresolverutils.py", line 94, in collect_urlpatterns_from_package 
    import_package(views_package) 
    File "/home/foobar_vums_d/src/djangotools/djangotools/utils/urlresolverutils.py", line 89, in import_package 
    importlib.import_module(module_name) 
    File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module 
    __import__(name) 
    File "/home/foobar_vums_d/src/foobar/foobar/views/issue/legacy_edit2.py", line 55, in <module> 
    for index in Index.objects.all(): 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/db/models/query.py", line 258, in __iter__ 
    self._fetch_all() 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/db/models/query.py", line 1074, in _fetch_all 
    self._result_cache = list(self.iterator()) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/db/models/query.py", line 52, in __iter__ 
    results = compiler.execute_sql() 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 846, in execute_sql 
    cursor = self.connection.cursor() 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 231, in cursor 
    cursor = self.make_debug_cursor(self._cursor()) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 204, in _cursor 
    self.ensure_connection() 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 199, in ensure_connection 
    self.connect() 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 171, in connect 
    self.connection = self.get_new_connection(conn_params) 
    File "/home/foobar_vums_d/local/lib/python2.7/site-packages/django/db/backends/postgresql/base.py", line 175, in get_new_connection 
    connection = Database.connect(**conn_params) 
    File "/usr/lib/python2.7/dist-packages/psycopg2/__init__.py", line 105, in connect 
    assert 0 
AssertionError

출처

2017-03-23 09:48:40 guettli

Django : 모듈 수준 db 쿼리를 감지하십시오.

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