Merge branch '216_cwebber_style_unique_slugs'
This commit is contained in:
Christopher Allan Webber
commit
c7d135b6ea
@ -27,6 +27,8 @@ These functions now live here and get "mixed in" into the
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real objects.
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"""
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import uuid
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from werkzeug.utils import cached_property
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from mediagoblin import mg_globals
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@ -52,19 +54,69 @@ class UserMixin(object):
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class MediaEntryMixin(object):
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def generate_slug(self):
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"""
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Generate a unique slug for this MediaEntry.
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This one does not *force* slugs, but usually it will probably result
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in a niceish one.
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The end *result* of the algorithm will result in these resolutions for
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these situations:
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- If we have a slug, make sure it's clean and sanitized, and if it's
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unique, we'll use that.
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- If we have a title, slugify it, and if it's unique, we'll use that.
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- If we can't get any sort of thing that looks like it'll be a useful
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slug out of a title or an existing slug, bail, and don't set the
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slug at all. Don't try to create something just because. Make
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sure we have a reasonable basis for a slug first.
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- If we have a reasonable basis for a slug (either based on existing
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slug or slugified title) but it's not unique, first try appending
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the entry's id, if that exists
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- If that doesn't result in something unique, tack on some randomly
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generated bits until it's unique. That'll be a little bit of junk,
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but at least it has the basis of a nice slug.
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"""
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# import this here due to a cyclic import issue
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# (db.models -> db.mixin -> db.util -> db.models)
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from mediagoblin.db.util import check_media_slug_used
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self.slug = slugify(self.title)
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#Is already a slug assigned? Check if it is valid
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if self.slug:
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self.slug = slugify(self.slug)
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duplicate = check_media_slug_used(self.uploader, self.slug, self.id)
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# otherwise, try to use the title.
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elif self.title:
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# assign slug based on title
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self.slug = slugify(self.title)
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if duplicate:
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if self.id is not None:
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self.slug = u"%s-%s" % (self.id, self.slug)
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else:
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self.slug = None
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# We don't want any empty string slugs
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if self.slug == u"":
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self.slug = None
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# Do we have anything at this point?
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# If not, we're not going to get a slug
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# so just return... we're not going to force one.
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if not self.slug:
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return # giving up!
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# Otherwise, let's see if this is unique.
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if check_media_slug_used(self.uploader, self.slug, self.id):
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# It looks like it's being used... lame.
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# Can we just append the object's id to the end?
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if self.id:
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slug_with_id = u"%s-%s" % (self.slug, self.id)
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if not check_media_slug_used(self.uploader,
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slug_with_id, self.id):
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self.slug = slug_with_id
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return # success!
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# okay, still no success;
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# let's whack junk on there till it's unique.
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self.slug += '-' + uuid.uuid4().hex[:4]
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# keep going if necessary!
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while check_media_slug_used(self.uploader, self.slug, self.id):
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self.slug += uuid.uuid4().hex[:4]
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@property
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def description_html(self):
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130
mediagoblin/tests/test_modelmethods.py
Normal file
130
mediagoblin/tests/test_modelmethods.py
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@ -0,0 +1,130 @@
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# GNU MediaGoblin -- federated, autonomous media hosting
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# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Maybe not every model needs a test, but some models have special
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# methods, and so it makes sense to test them here.
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from mediagoblin.db.models import MediaEntry
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from mediagoblin.tests.tools import get_test_app, \
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fixture_add_user
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import mock
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class FakeUUID(object):
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hex = 'testtest-test-test-test-testtesttest'
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UUID_MOCK = mock.Mock(return_value=FakeUUID())
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class TestMediaEntrySlugs(object):
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def setUp(self):
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self.test_app = get_test_app(dump_old_app=True)
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self.chris_user = fixture_add_user(u'chris')
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self.emily_user = fixture_add_user(u'emily')
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self.existing_entry = self._insert_media_entry_fixture(
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title=u"Beware, I exist!",
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slug=u"beware-i-exist")
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def _insert_media_entry_fixture(self, title=None, slug=None, this_id=None,
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uploader=None, save=True):
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entry = MediaEntry()
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entry.title = title or u"Some title"
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entry.slug = slug
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entry.id = this_id
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entry.uploader = uploader or self.chris_user.id
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entry.media_type = u'image'
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if save:
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entry.save()
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return entry
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def test_unique_slug_from_title(self):
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entry = self._insert_media_entry_fixture(u"Totally unique slug!", save=False)
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entry.generate_slug()
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assert entry.slug == u'totally-unique-slug'
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def test_old_good_unique_slug(self):
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entry = self._insert_media_entry_fixture(
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u"A title here", u"a-different-slug-there", save=False)
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entry.generate_slug()
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assert entry.slug == u"a-different-slug-there"
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def test_old_weird_slug(self):
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entry = self._insert_media_entry_fixture(
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slug=u"wowee!!!!!", save=False)
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entry.generate_slug()
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assert entry.slug == u"wowee"
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def test_existing_slug_use_id(self):
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entry = self._insert_media_entry_fixture(
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u"Beware, I exist!!", this_id=9000, save=False)
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entry.generate_slug()
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assert entry.slug == u"beware-i-exist-9000"
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@mock.patch('uuid.uuid4', UUID_MOCK)
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def test_existing_slug_cant_use_id(self):
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# This one grabs the nine thousand slug
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self._insert_media_entry_fixture(
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slug=u"beware-i-exist-9000")
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entry = self._insert_media_entry_fixture(
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u"Beware, I exist!!", this_id=9000, save=False)
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entry.generate_slug()
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assert entry.slug == u"beware-i-exist-test"
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@mock.patch('uuid.uuid4', UUID_MOCK)
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def test_existing_slug_cant_use_id_extra_junk(self):
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# This one grabs the nine thousand slug
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self._insert_media_entry_fixture(
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slug=u"beware-i-exist-9000")
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# This one grabs makes sure the annoyance doesn't stop
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self._insert_media_entry_fixture(
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slug=u"beware-i-exist-test")
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entry = self._insert_media_entry_fixture(
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u"Beware, I exist!!", this_id=9000, save=False)
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entry.generate_slug()
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assert entry.slug == u"beware-i-exist-testtest"
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def test_garbage_slug(self):
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"""
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Titles that sound totally like Q*Bert shouldn't have slugs at
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all. We'll just reference them by id.
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,
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/ \ (@!#?@!)
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|\,/| ,-, /
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| |#| ( ")~
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/ \|/ \ L L
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|\,/|\,/|
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| |#, |#|
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/ \|/ \|/ \
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|\,/|\,/|\,/|
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| |#| |#| |#|
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/ \|/ \|/ \|/ \
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|\,/|\,/|\,/|\,/|
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| |#| |#| |#| |#|
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\|/ \|/ \|/ \|/
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"""
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qbert_entry = self._insert_media_entry_fixture(
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u"@!#?@!", save=False)
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qbert_entry.generate_slug()
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assert qbert_entry.slug is None
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@ -25,7 +25,7 @@ except ImportError:
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USING_TRANSLITCODEC = False
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_punct_re = re.compile(r'[\t !"#$%&\'()*\-/<=>?@\[\\\]^_`{|},.]+')
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_punct_re = re.compile(r'[\t !"#:$%&\'()*\-/<=>?@\[\\\]^_`{|},.]+')
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def slugify(text, delim=u'-'):
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