from datetime import datetime
+import os.path
+from django.contrib.auth.models import User
from django.core.files.base import ContentFile
from django.core.files.storage import FileSystemStorage
-from django.db import models
+from django.db import models, transaction
from django.db.models.base import ModelBase
-from django.contrib.auth.models import User
-from django.utils.translation import ugettext_lazy as _
-from mercurial import mdiff, simplemerge
+from django.utils.translation import string_concat, ugettext_lazy as _
+from mercurial import simplemerge
-from dvcs.fields import GzipFileSystemStorage
-from dvcs.settings import REPO_PATH
+from django.conf import settings
+from dvcs.signals import post_commit, post_publishable
+from dvcs.storage import GzipFileSystemStorage
class Tag(models.Model):
- """
- a tag (e.g. document stage) which can be applied to a change
- """
-
+ """A tag (e.g. document stage) which can be applied to a Change."""
name = models.CharField(_('name'), max_length=64)
slug = models.SlugField(_('slug'), unique=True, max_length=64,
null=True, blank=True)
def listener_changed(sender, instance, **kwargs):
sender._object_cache = {}
- def next(self):
+ def get_next(self):
"""
Returns the next tag - stage to work on.
Returns None for the last stage.
"""
try:
- return Tag.objects.filter(ordering__gt=self.ordering)[0]
+ return type(self).objects.filter(ordering__gt=self.ordering)[0]
except IndexError:
return None
models.signals.pre_save.connect(Tag.listener_changed, sender=Tag)
-repo = GzipFileSystemStorage(location=REPO_PATH)
-
def data_upload_to(instance, filename):
return "%d/%d" % (instance.tree.pk, instance.pk)
Data file contains a gzipped text of the document.
"""
- author = models.ForeignKey(User, null=True, blank=True)
- author_name = models.CharField(max_length=128, null=True, blank=True)
- author_email = models.CharField(max_length=128, null=True, blank=True)
- data = models.FileField(upload_to=data_upload_to, storage=repo)
- revision = models.IntegerField(db_index=True)
+ author = models.ForeignKey(User, null=True, blank=True, verbose_name=_('author'))
+ author_name = models.CharField(_('author name'), max_length=128,
+ null=True, blank=True,
+ help_text=_("Used if author is not set.")
+ )
+ author_email = models.CharField(_('author email'), max_length=128,
+ null=True, blank=True,
+ help_text=_("Used if author is not set.")
+ )
+ revision = models.IntegerField(_('revision'), db_index=True)
parent = models.ForeignKey('self',
null=True, blank=True, default=None,
+ verbose_name=_('parent'),
related_name="children")
merge_parent = models.ForeignKey('self',
null=True, blank=True, default=None,
+ verbose_name=_('merge parent'),
related_name="merge_children")
- description = models.TextField(blank=True, default='')
+ description = models.TextField(_('description'), blank=True, default='')
created_at = models.DateTimeField(editable=False, db_index=True,
default=datetime.now)
- publishable = models.BooleanField(default=False)
+ publishable = models.BooleanField(_('publishable'), default=False)
class Meta:
abstract = True
if self.revision is None:
tree_rev = self.tree.revision()
if tree_rev is None:
- self.revision = 0
+ self.revision = 1
else:
self.revision = tree_rev + 1
return super(Change, self).save(*args, **kwargs)
""" commit this version of a doc as new head """
self.tree.commit(text=self.materialize(), **kwargs)
+ def set_publishable(self, publishable):
+ self.publishable = publishable
+ self.save()
+ post_publishable.send(sender=self, publishable=publishable)
+
def create_tag_model(model):
name = model.__name__ + 'Tag'
+
+ class Meta(Tag.Meta):
+ app_label = model._meta.app_label
+ verbose_name = string_concat(_("tag"), " ", _("for:"), " ",
+ model._meta.verbose_name)
+ verbose_name_plural = string_concat(_("tags"), " ", _("for:"), " ",
+ model._meta.verbose_name)
+
attrs = {
'__module__': model.__module__,
+ 'Meta': Meta,
}
return type(name, (Tag,), attrs)
def create_change_model(model):
name = model.__name__ + 'Change'
+ repo = GzipFileSystemStorage(location=model.REPO_PATH)
+
+ class Meta(Change.Meta):
+ app_label = model._meta.app_label
+ verbose_name = string_concat(_("change"), " ", _("for:"), " ",
+ model._meta.verbose_name)
+ verbose_name_plural = string_concat(_("changes"), " ", _("for:"), " ",
+ model._meta.verbose_name)
attrs = {
'__module__': model.__module__,
- 'tree': models.ForeignKey(model, related_name='change_set'),
- 'tags': models.ManyToManyField(model.tag_model, related_name='change_set'),
+ 'tree': models.ForeignKey(model, related_name='change_set', verbose_name=_('document')),
+ 'tags': models.ManyToManyField(model.tag_model, verbose_name=_('tags'), related_name='change_set'),
+ 'data': models.FileField(_('data'), upload_to=data_upload_to, storage=repo),
+ 'Meta': Meta,
}
return type(name, (Change,), attrs)
-
class DocumentMeta(ModelBase):
"Metaclass for Document models."
def __new__(cls, name, bases, attrs):
+
model = super(DocumentMeta, cls).__new__(cls, name, bases, attrs)
if not model._meta.abstract:
# create a real Tag object and `stage' fk
model.tag_model = create_tag_model(model)
- models.ForeignKey(model.tag_model,
+ models.ForeignKey(model.tag_model, verbose_name=_('stage'),
null=True, blank=True).contribute_to_class(model, 'stage')
# create real Change model and `head' fk
model.change_model = create_change_model(model)
+
models.ForeignKey(model.change_model,
null=True, blank=True, default=None,
+ verbose_name=_('head'),
help_text=_("This document's current head."),
editable=False).contribute_to_class(model, 'head')
- return model
+ models.ForeignKey(User, null=True, blank=True, editable=False,
+ verbose_name=_('creator'), related_name="created_%s" % name.lower()
+ ).contribute_to_class(model, 'creator')
+ return model
class Document(models.Model):
- """
- File in repository.
- """
+ """File in repository. Subclass it to use version control in your app."""
+
__metaclass__ = DocumentMeta
- creator = models.ForeignKey(User, null=True, blank=True, editable=False,
- related_name="created_documents")
+ # default repository path
+ REPO_PATH = os.path.join(settings.MEDIA_ROOT, 'dvcs')
- user = models.ForeignKey(User, null=True, blank=True)
+ user = models.ForeignKey(User, null=True, blank=True,
+ verbose_name=_('user'), help_text=_('Work assignment.'))
class Meta:
abstract = True
def __unicode__(self):
return u"{0}, HEAD: {1}".format(self.id, self.head_id)
- @models.permalink
- def get_absolute_url(self):
- return ('dvcs.views.document_data', (), {
- 'document_id': self.id,
- 'version': self.head_id,
- })
-
def materialize(self, change=None):
if self.head is None:
return u''
change = self.change_set.get(pk=change)
return change.materialize()
- def commit(self, text, **kwargs):
+ def commit(self, text, author=None, author_name=None, author_email=None,
+ publishable=False, **kwargs):
+ """Commits a new revision.
+
+ This will automatically merge the commit into the main branch,
+ if parent is not document's head.
+
+ :param unicode text: new version of the document
+ :param parent: parent revision (head, if not specified)
+ :type parent: Change or None
+ :param User author: the commiter
+ :param unicode author_name: commiter name (if ``author`` not specified)
+ :param unicode author_email: commiter e-mail (if ``author`` not specified)
+ :param Tag[] tags: list of tags to apply to the new commit
+ :param bool publishable: set new commit as ready to publish
+ :returns: new head
+ """
if 'parent' not in kwargs:
parent = self.head
else:
if parent is not None and not isinstance(parent, Change):
parent = self.change_set.objects.get(pk=kwargs['parent'])
- author = kwargs.get('author', None)
- author_name = kwargs.get('author_name', None)
- author_email = kwargs.get('author_email', None)
tags = kwargs.get('tags', [])
if tags:
# set stage to next tag after the commited one
- self.stage = max(tags, key=lambda t: t.ordering).next()
+ self.stage = max(tags, key=lambda t: t.ordering).get_next()
change = self.change_set.create(author=author,
author_name=author_name,
author_email=author_email,
description=kwargs.get('description', ''),
+ publishable=publishable,
parent=parent)
change.tags = tags
else:
self.head = change
self.save()
+
+ post_commit.send(sender=self.head)
+
return self.head
def history(self):
- return self.change_set.filter(revision__gt=-1)
+ return self.change_set.all().order_by('revision')
def revision(self):
rev = self.change_set.aggregate(
return self.change_set.get(revision=rev)
def publishable(self):
- changes = self.change_set.filter(publishable=True).order_by('-created_at')[:1]
- if changes.count():
- return changes[0]
+ changes = self.history().filter(publishable=True)
+ if changes.exists():
+ return changes.order_by('-revision')[0]
else:
return None
+
+ @transaction.commit_on_success
+ def prepend_history(self, other):
+ """Takes over the the other document's history and prepends to own."""
+
+ assert self != other
+ other_revs = other.change_set.all().count()
+ # workaround for a non-atomic UPDATE in SQLITE
+ self.change_set.all().update(revision=0-models.F('revision'))
+ self.change_set.all().update(revision=other_revs - models.F('revision'))
+ other.change_set.all().update(tree=self)
+ assert not other.change_set.exists()
+ other.delete()
fnp / redakcja.git / blobdiff