+
+from django.core.urlresolvers import reverse
+from django.db import models
+from django.utils.safestring import mark_safe
+from django.utils.translation import ugettext_lazy as _
+from django.template.loader import render_to_string
+
+from dvcs import models as dvcs_models
+from wiki.xml_tools import compile_text
+
+import logging
+logger = logging.getLogger("fnp.wiki")
+
+
+class Book(models.Model):
+ """ A document edited on the wiki """
+
+ title = models.CharField(_('title'), max_length=255)
+ slug = models.SlugField(_('slug'), max_length=128, unique=True)
+ gallery = models.CharField(_('scan gallery name'), max_length=255, blank=True)
+
+ parent = models.ForeignKey('self', null=True, blank=True, verbose_name=_('parent'), related_name="children")
+ parent_number = models.IntegerField(_('parent number'), null=True, blank=True, db_index=True)
+ last_published = models.DateTimeField(null=True, editable=False)
+
+ _list_html = models.TextField(editable=False, null=True)
+
+ class NoTextError(BaseException):
+ pass
+
+ class Meta:
+ ordering = ['parent_number', 'title']
+ verbose_name = _('book')
+ verbose_name_plural = _('books')
+
+ def __unicode__(self):
+ return self.title
+
+ def get_absolute_url(self):
+ return reverse("wiki_book", args=[self.slug])
+
+ def save(self, reset_list_html=True, *args, **kwargs):
+ if reset_list_html:
+ self._list_html = None
+ return super(Book, self).save(*args, **kwargs)
+
+ @classmethod
+ def create(cls, creator=None, text=u'', *args, **kwargs):
+ """
+ >>> Book.create(slug='x', text='abc').materialize()
+ 'abc'
+ """
+ instance = cls(*args, **kwargs)
+ instance.save()
+ instance[0].commit(author=creator, text=text)
+ return instance
+
+ def __iter__(self):
+ return iter(self.chunk_set.all())
+
+ def __getitem__(self, chunk):
+ return self.chunk_set.all()[chunk]
+
+ def __len__(self):
+ return self.chunk_set.count()
+
+ def list_html(self):
+ if self._list_html is None:
+ print 'rendering', self.title
+ self._list_html = render_to_string('wiki/document_list_item.html',
+ {'book': self})
+ self.save(reset_list_html=False)
+ return mark_safe(self._list_html)
+
+ def materialize(self, publishable=True):
+ """
+ Get full text of the document compiled from chunks.
+ Takes the current versions of all texts
+ or versions most recently tagged for publishing.
+ """
+ if publishable:
+ changes = [chunk.publishable() for chunk in self]
+ else:
+ changes = [chunk.head for chunk in self]
+ if None in changes:
+ raise self.NoTextError('Some chunks have no available text.')
+ return compile_text(change.materialize() for change in changes)
+
+ def publishable(self):
+ if not len(self):
+ return False
+ for chunk in self:
+ if not chunk.publishable():
+ return False
+ return True
+
+ def make_chunk_slug(self, proposed):
+ """
+ Finds a chunk slug not yet used in the book.
+ """
+ slugs = set(c.slug for c in self)
+ i = 1
+ new_slug = proposed
+ while new_slug in slugs:
+ new_slug = "%s-%d" % (proposed, i)
+ i += 1
+ return new_slug
+
+ def append(self, other):
+ number = self[len(self) - 1].number + 1
+ single = len(other) == 1
+ for chunk in other:
+ # move chunk to new book
+ chunk.book = self
+ chunk.number = number
+
+ # try some title guessing
+ if other.title.startswith(self.title):
+ other_title_part = other.title[len(self.title):].lstrip(' /')
+ else:
+ other_title_part = other.title
+
+ if single:
+ # special treatment for appending one-parters:
+ # just use the guessed title and original book slug
+ chunk.comment = other_title_part
+ if other.slug.startswith(self.slug):
+ chunk_slug = other.slug[len(self.slug):].lstrip('-_')
+ else:
+ chunk_slug = other.slug
+ chunk.slug = self.make_chunk_slug(chunk_slug)
+ else:
+ chunk.comment = "%s, %s" % (other_title_part, chunk.comment)
+ chunk.slug = self.make_chunk_slug(chunk.slug)
+ chunk.save()
+ number += 1
+ other.delete()
+
+ @staticmethod
+ def listener_create(sender, instance, created, **kwargs):
+ if created:
+ instance.chunk_set.create(number=1, slug='1')
+
+models.signals.post_save.connect(Book.listener_create, sender=Book)
+
+
+class Chunk(dvcs_models.Document):
+ """ An editable chunk of text. Every Book text is divided into chunks. """
+
+ book = models.ForeignKey(Book, editable=False)
+ number = models.IntegerField()
+ slug = models.SlugField()
+ comment = models.CharField(max_length=255)
+
+ class Meta:
+ unique_together = [['book', 'number'], ['book', 'slug']]
+ ordering = ['number']
+
+ def __unicode__(self):
+ return "%d-%d: %s" % (self.book_id, self.number, self.comment)
+
+ def get_absolute_url(self):
+ return reverse("wiki_editor", args=[self.book.slug, self.slug])
+
+ @classmethod
+ def get(cls, slug, chunk=None):
+ if chunk is None:
+ return cls.objects.get(book__slug=slug, number=1)
fnp / redakcja.git / blobdiff