X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/7671cda4767353b2a93b05f2332ba6e2f236c468..b1ed7a2833a88905986d40f815489149f3a1beb7:/apps/wiki/models.py diff --git a/apps/wiki/models.py b/apps/wiki/models.py index 60702065..c539908d 100644 --- a/apps/wiki/models.py +++ b/apps/wiki/models.py @@ -3,188 +3,13 @@ # This file is part of FNP-Redakcja, licensed under GNU Affero GPLv3 or later. # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information. # -import itertools -import re - -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 - import logging logger = logging.getLogger("fnp.wiki") -RE_TRIM_BEGIN = re.compile("^$", re.M) -RE_TRIM_END = re.compile("^$", re.M) - - -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) - - _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 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) - - @staticmethod - def trim(text, trim_begin=True, trim_end=True): - """ - Cut off everything before RE_TRIM_BEGIN and after RE_TRIM_END, so - that eg. one big XML file can be compiled from many small XML files. - """ - if trim_begin: - text = RE_TRIM_BEGIN.split(text, maxsplit=1)[-1] - if trim_end: - text = RE_TRIM_END.split(text, maxsplit=1)[0] - return text - - @staticmethod - def publish_tag(): - return dvcs_models.Tag.get('publish') - - def materialize(self, tag=None): - """ - Get full text of the document compiled from chunks. - Takes the current versions of all texts for now, but it should - be possible to specify a tag or a point in time for compiling. - - First non-empty text's beginning isn't trimmed, - and last non-empty text's end isn't trimmed. - """ - if tag: - changes = [chunk.last_tagged(tag) 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.') - texts = [] - trim_begin = False - text = '' - for chunk in changes: - next_text = chunk.materialize() - if not next_text: - continue - if text: - # trim the end, because there's more non-empty text - # don't trim beginning, if `text' is the first non-empty part - texts.append(self.trim(text, trim_begin=trim_begin)) - trim_begin = True - text = next_text - # don't trim the end, because there's no more text coming after `text' - # only trim beginning if it's not still the first non-empty - texts.append(self.trim(text, trim_begin=trim_begin, trim_end=False)) - return "".join(texts) - - def publishable(self): - if not len(self): - return False - for chunk in self: - if not chunk.publishable(): - return False - return True - - @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) - 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) - else: - return cls.objects.get(book__slug=slug, slug=chunk) - - def pretty_name(self): - return "%s, %s (%d/%d)" % (self.book.title, self.comment, - self.number, len(self.book)) - - def publishable(self): - return self.last_tagged(Book.publish_tag()) - - @staticmethod - def listener_saved(sender, instance, created, **kwargs): - if instance.book: - # save book so that its _list_html is reset - instance.book.save() - -models.signals.post_save.connect(Chunk.listener_saved, sender=Chunk) - - class Theme(models.Model): name = models.CharField(_('name'), max_length=50, unique=True)