diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..6e0199a --- /dev/null +++ b/.gitignore @@ -0,0 +1,60 @@ +# Byte-compiled / optimized / DLL files +__pycache__/ +*.py[cod] + +# C extensions +*.so + +# Distribution / packaging +.Python +env/ +bin/ +build/ +develop-eggs/ +dist/ +eggs/ +lib/ +lib64/ +parts/ +sdist/ +var/ +*.egg-info/ +.installed.cfg +*.egg + +# Installer logs +pip-log.txt +pip-delete-this-directory.txt + +# Unit test / coverage reports +htmlcov/ +.tox/ +.coverage +.cache +nosetests.xml +coverage.xml + +# Translations +*.mo + +# Mr Developer +.mr.developer.cfg +.project +.pydevproject + +# Rope +.ropeproject + +# Django stuff: +*.log +*.pot + +# Sphinx documentation +docs/_build/ + +# Sqlite Database + +*.db + + +.idea/ diff --git a/.pep8 b/.pep8 new file mode 100644 index 0000000..8c7b65a --- /dev/null +++ b/.pep8 @@ -0,0 +1,4 @@ +[pep8] +ignore=E501 +max_line_length=80 +exclude=settings diff --git a/.pylintrc b/.pylintrc new file mode 100644 index 0000000..1756f6e --- /dev/null +++ b/.pylintrc @@ -0,0 +1,293 @@ +[MASTER] + +# Specify a configuration file. +#rcfile= + +# Python code to execute, usually for sys.path manipulation such as +# pygtk.require(). +#init-hook='' + +# Profiled execution. +profile=no + +# Add files or directories to the blacklist. They should be base names, not +# paths. +ignore=CVS, migrations, settings + +# Pickle collected data for later comparisons. +persistent=yes + +# List of plugins (as comma separated values of python modules names) to load, +# usually to register additional checkers. +load-plugins= + +[MESSAGES CONTROL] + +# Enable the message, report, category or checker with the given id(s). You can +# either give multiple identifier separated by comma (,) or put this option +# multiple time. +#enable= + +# Disable the message, report, category or checker with the given id(s). You +# can either give multiple identifier separated by comma (,) or put this option +# multiple time (only on the command line, not in the configuration file where +# it should appear only once). +disable= +# Never going to use these +# I0011: Locally disabling W0232 +# W0141: Used builtin function 'map' +# W0142: Used * or ** magic +# R0921: Abstract class not referenced +# R0922: Abstract class is only referenced 1 times + I0011,W0141,W0142,R0921,R0922, + +# Django makes classes that trigger these +# W0232: Class has no __init__ method + W0232, + +# Might use these when the code is in better shape +# C0302: Too many lines in module +# R0201: Method could be a function +# R0901: Too many ancestors +# R0902: Too many instance attributes +# R0903: Too few public methods (1/2) +# R0904: Too many public methods +# R0911: Too many return statements +# R0912: Too many branches +# R0913: Too many arguments +# R0914: Too many local variables + C0302,R0201,R0901,R0902,R0903,R0904,R0911,R0912,R0913,R0914, +# W0511: TODOs etc + W0511, +# E1103: maybe no member + E1103, +# C0111: missing docstring (handled by pep257) + C0111, + +# We can decide if names are invalid on our own + invalid-name, + +[REPORTS] + +# Set the output format. Available formats are text, parseable, colorized, msvs +# (visual studio) and html +output-format=text + +# Include message's id in output +include-ids=yes + +# Put messages in a separate file for each module / package specified on the +# command line instead of printing them on stdout. Reports (if any) will be +# written in a file name "pylint_global.[txt|html]". +files-output=no + +# Tells whether to display a full report or only the messages +reports=no + +# Python expression which should return a note less than 10 (10 is the highest +# note). You have access to the variables errors warning, statement which +# respectively contain the number of errors / warnings messages and the total +# number of statements analyzed. This is used by the global evaluation report +# (RP0004). +evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10) + +# Add a comment according to your evaluation note. This is used by the global +# evaluation report (RP0004). +comment=no + + +[TYPECHECK] + +# Tells whether missing members accessed in mixin class should be ignored. A +# mixin class is detected if its name ends with "mixin" (case insensitive). +ignore-mixin-members=yes + +# List of classes names for which member attributes should not be checked +# (useful for classes with attributes dynamically set). +ignored-classes=SQLObject + +# When zope mode is activated, add a predefined set of Zope acquired attributes +# to generated-members. +zope=no + +# List of members which are set dynamically and missed by pylint inference +# system, and so shouldn't trigger E0201 when accessed. Python regular +# expressions are accepted. +generated-members= + REQUEST, + acl_users, + aq_parent, + objects, + DoesNotExist, + can_read, + can_write, + get_url, + size, + content, + status_code, +# For factory_boy factories + create + + +[BASIC] + +# Required attributes for module, separated by a comma +required-attributes= + +# List of builtins function names that should not be used, separated by a comma +bad-functions=map,filter,apply,input + +# Regular expression which should only match correct module names +module-rgx=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$ + +# Regular expression which should only match correct module level names +const-rgx=(([A-Z_][A-Z0-9_]*)|(__.*__)|log|urlpatterns)$ + +# Regular expression which should only match correct class names +class-rgx=[A-Z_][a-zA-Z0-9]+$ + +# Regular expression which should only match correct function names +function-rgx=[a-z_][a-z0-9_]{2,30}$ + +# Regular expression which should only match correct method names +method-rgx=([a-z_][a-z0-9_]{2,60}|setUp|set[Uu]pClass|tearDown|tear[Dd]ownClass|assert[A-Z]\w*)$ + +# Regular expression which should only match correct instance attribute names +attr-rgx=[a-z_][a-z0-9_]{2,30}$ + +# Regular expression which should only match correct argument names +argument-rgx=[a-z_][a-z0-9_]{2,30}$ + +# Regular expression which should only match correct variable names +variable-rgx=[a-z_][a-z0-9_]{2,30}$ + +# Regular expression which should only match correct list comprehension / +# generator expression variable names +inlinevar-rgx=[A-Za-z_][A-Za-z0-9_]*$ + +# Good variable names which should always be accepted, separated by a comma +good-names=i,j,k,ex,Run,_ + +# Bad variable names which should always be refused, separated by a comma +bad-names=foo,bar,baz,toto,tutu,tata + +# Regular expression which should only match functions or classes name which do +# not require a docstring +no-docstring-rgx=__.*__|test_.*|setUp|tearDown + + +[MISCELLANEOUS] + +# List of note tags to take in consideration, separated by a comma. +notes=FIXME,XXX,TODO + + +[FORMAT] + +# Maximum number of characters on a single line. +max-line-length=120 + +# Maximum number of lines in a module +max-module-lines=1000 + +# String used as indentation unit. This is usually " " (4 spaces) or "\t" (1 +# tab). +indent-string=' ' + + +[SIMILARITIES] + +# Minimum lines number of a similarity. +min-similarity-lines=4 + +# Ignore comments when computing similarities. +ignore-comments=yes + +# Ignore docstrings when computing similarities. +ignore-docstrings=yes + + +[VARIABLES] + +# Tells whether we should check for unused import in __init__ files. +init-import=no + +# A regular expression matching the beginning of the name of dummy variables +# (i.e. not used). +dummy-variables-rgx=_|dummy|unused|.*_unused + +# List of additional names supposed to be defined in builtins. Remember that +# you should avoid to define new builtins when possible. +additional-builtins= + + +[IMPORTS] + +# Deprecated modules which should not be used, separated by a comma +deprecated-modules=regsub,string,TERMIOS,Bastion,rexec + +# Create a graph of every (i.e. internal and external) dependencies in the +# given file (report RP0402 must not be disabled) +import-graph= + +# Create a graph of external dependencies in the given file (report RP0402 must +# not be disabled) +ext-import-graph= + +# Create a graph of internal dependencies in the given file (report RP0402 must +# not be disabled) +int-import-graph= + + +[DESIGN] + +# Maximum number of arguments for function / method +max-args=5 + +# Argument names that match this expression will be ignored. Default to name +# with leading underscore +ignored-argument-names=_.* + +# Maximum number of locals for function / method body +max-locals=15 + +# Maximum number of return / yield for function / method body +max-returns=6 + +# Maximum number of branch for function / method body +max-branchs=12 + +# Maximum number of statements in function / method body +max-statements=50 + +# Maximum number of parents for a class (see R0901). +max-parents=7 + +# Maximum number of attributes for a class (see R0902). +max-attributes=7 + +# Minimum number of public methods for a class (see R0903). +min-public-methods=2 + +# Maximum number of public methods for a class (see R0904). +max-public-methods=20 + + +[CLASSES] + +# List of interface methods to ignore, separated by a comma. This is used for +# instance to not check methods defines in Zope's Interface base class. +ignore-iface-methods=isImplementedBy,deferred,extends,names,namesAndDescriptions,queryDescriptionFor,getBases,getDescriptionFor,getDoc,getName,getTaggedValue,getTaggedValueTags,isEqualOrExtendedBy,setTaggedValue,isImplementedByInstancesOf,adaptWith,is_implemented_by + +# List of method names used to declare (i.e. assign) instance attributes. +defining-attr-methods=__init__,__new__,setUp + +# List of valid names for the first argument in a class method. +valid-classmethod-first-arg=cls + + +[EXCEPTIONS] + +# Exceptions that will emit a warning when being caught. Defaults to +# "Exception" +overgeneral-exceptions=Exception diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..7cae58b --- /dev/null +++ b/AUTHORS @@ -0,0 +1 @@ +Clinton Blackburn diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..b5e2779 --- /dev/null +++ b/LICENSE @@ -0,0 +1,671 @@ + GNU AFFERO GENERAL PUBLIC LICENSE + Version 3, 19 November 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU Affero General Public License is a free, copyleft license for +software and other kinds of works, specifically designed to ensure +cooperation with the community in the case of network server software. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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"Corresponding Source" of this work, or works based on this +work, as defined by the terms of this license do not include source code +files for programs used solely to provide those public, independently +available web services. \ No newline at end of file diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..427cfd1 --- /dev/null +++ b/Makefile @@ -0,0 +1,17 @@ +COVERAGE = $(ROOT)/build/coverage +PACKAGE = lang_pref_middleware + +validate: test.requirements test quality + +test.requirements: + pip install -q -r requirements.txt + +test: + ./manage.py test --with-coverage --cover-inclusive --cover-branches --cover-html --cover-html-dir=$(COVERAGE)/html/ --cover-xml --cover-xml-file=$(COVERAGE)/coverage.xml --cover-package=$(PACKAGE) + +quality: + pep8 --config=.pep8 $(PACKAGE) + pylint --rcfile=.pylintrc $(PACKAGE) + + # Ignore module level docstrings and all test files + pep257 --ignore=D100,D203 --match='(?!test).*py' $(PACKAGE) diff --git a/README.md b/README.md new file mode 100644 index 0000000..36eb2b5 --- /dev/null +++ b/README.md @@ -0,0 +1,31 @@ +Django Language Preference Middleware +===================================== + +This repo contains basic middleware that retrieves a user's language +preference and sets it on the request session. + +Usage +===== +Subclass `LanguagePreferenceMiddleware` and override the +`get_user_language_preference` method. + +Your new middleware should be +tested by including `LangPrefMiddlewareTestCaseMixin` in your test case and +overriding the `middleware_class`, `get_user`, and +`set_user_language_preference` attributes. + +Testing +======= + + $ make validate + + +How to Contribute +----------------- + +Contributions are very welcome, but for legal reasons, you must submit a signed +[individual contributor's agreement](http://code.edx.org/individual-contributor-agreement.pdf) +before we can accept your contribution. See our +[CONTRIBUTING](https://github.com/edx/edx-platform/blob/master/CONTRIBUTING.rst) +file for more information -- it also contains guidelines for how to maintain +high code quality, which will make your contribution more likely to be accepted. diff --git a/lang_pref_middleware/__init__.py b/lang_pref_middleware/__init__.py new file mode 100644 index 0000000..e69de29 diff --git a/lang_pref_middleware/middleware.py b/lang_pref_middleware/middleware.py new file mode 100644 index 0000000..b9c4cca --- /dev/null +++ b/lang_pref_middleware/middleware.py @@ -0,0 +1,22 @@ +class LanguagePreferenceMiddleware(object): + """ + Middleware for user language preference. + + Sets the user's language preference on the session, if it is not already set. + """ + + def process_request(self, request): + """ Set the language preference, if any, on the session. """ + user = request.user + if user.is_authenticated() and 'django_language' not in request.session: + user_pref = self.get_user_language_preference(user) + if user_pref: + request.session['django_language'] = user_pref + + def get_user_language_preference(self, user): + """ + Retrieve the given user's language preference. + + Returns None if no preference set. + """ + raise NotImplementedError # pragma: no cover diff --git a/lang_pref_middleware/tests.py b/lang_pref_middleware/tests.py new file mode 100644 index 0000000..a604f74 --- /dev/null +++ b/lang_pref_middleware/tests.py @@ -0,0 +1,80 @@ +import uuid +from django.test import TestCase +from django.test.client import RequestFactory +from django.contrib.auth.models import User +from django.contrib.sessions.middleware import SessionMiddleware +from lang_pref_middleware.middleware import LanguagePreferenceMiddleware + + +class LangPrefMiddlewareTestCaseMixin(object): + middleware_class = None + + def setUp(self): + # pylint: disable=not-callable + self.middleware = self.middleware_class() + self.session_middleware = SessionMiddleware() + self.user = self.get_user() + self.request = RequestFactory().get('/somewhere') + self.request.user = self.user + self.session_middleware.process_request(self.request) + + def get_user(self): + raise NotImplementedError + + def set_user_language_preference(self, user, language): + raise NotImplementedError + + def test_no_language_set_in_session_or_prefs(self): + """ + If no language set in session or user preferences, no language + should be set in the session. + """ + self.middleware.process_request(self.request) + self.assertNotIn('django_language', self.request.session) + + def test_language_in_user_prefs(self): + """ + If user has a preferred language set, and no language is already + set on the session, the user's preferred language should be set + on the session. + """ + self.set_user_language_preference(self.user, 'eo') + self.middleware.process_request(self.request) + self.assertEquals(self.request.session['django_language'], 'eo') + + def test_language_in_session(self): + """ + If the session already has a language set, it should not be changed + by the middleware. + """ + self.request.session['django_language'] = 'en' + self.set_user_language_preference(self.user, 'eo') + self.middleware.process_request(self.request) + + self.assertEquals(self.request.session['django_language'], 'en') + + +class DummyLanguagePreferenceMiddleware(LanguagePreferenceMiddleware): + """ + Simplified implementation of LanguagePreferenceMiddleware. + + This should not be used for any purpose outside of testing. + """ + + def __init__(self): + self._cache = {} + + def get_user_language_preference(self, user): + return self._cache.get(user, None) + + +class LangPrefMiddlewareTests(LangPrefMiddlewareTestCaseMixin, TestCase): + middleware_class = DummyLanguagePreferenceMiddleware + + def get_user(self): + username = uuid.uuid4().hex[0:20] + return User.objects.create_user(username) + + def set_user_language_preference(self, user, language): + # pylint: disable=protected-access + self.middleware._cache[user] = language diff --git a/manage.py b/manage.py new file mode 100755 index 0000000..f9726f9 --- /dev/null +++ b/manage.py @@ -0,0 +1,10 @@ +#!/usr/bin/env python +import os +import sys + +if __name__ == "__main__": + os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings") + + from django.core.management import execute_from_command_line + + execute_from_command_line(sys.argv) diff --git a/requirements.txt b/requirements.txt new file mode 100644 index 0000000..5b12303 --- /dev/null +++ b/requirements.txt @@ -0,0 +1,6 @@ +django>1.4 +coverage==3.7.1 +django-nose==1.2 +pep8==1.5.7 +pep257==0.3.2 +pylint==1.2.1 diff --git a/settings.py b/settings.py new file mode 100644 index 0000000..1d1fdcc --- /dev/null +++ b/settings.py @@ -0,0 +1,21 @@ +SECRET_KEY = 'abc123' + +########## TEST SETTINGS +INSTALLED_APPS = ( + 'django.contrib.auth', + 'django.contrib.contenttypes', + 'django.contrib.sessions', + 'django_nose' +) +TEST_RUNNER = 'django_nose.NoseTestSuiteRunner' +########## IN-MEMORY TEST DATABASE +DATABASES = { + "default": { + "ENGINE": "django.db.backends.sqlite3", + "NAME": ":memory:", + "USER": "", + "PASSWORD": "", + "HOST": "", + "PORT": "", + }, +} diff --git a/setup.py b/setup.py new file mode 100644 index 0000000..85d66d0 --- /dev/null +++ b/setup.py @@ -0,0 +1,18 @@ +from distutils.core import setup + +setup( + name='django-lang-pref-middleware', + version='0.1.0', + packages=['lang_pref_middleware'], + url='https://github.com/edx/django-lang-pref-middleware', + description="Django middleware for setting the user's language preference at request time.", + long_description=open('README.md').read(), + tests_require=[ + "django>1.4", + 'django-nose==1.2', + "coverage==3.7.1", + "pep8==1.5.7", + "pep257==0.3.2", + "pylint==1.2.1", + ] +)