fix

[redakcja.git] / src / catalogue / models.py

diff --git a/src/catalogue/models.py b/src/catalogue/models.py
index 4568af1..38d3167 100644 (file)
--- a/src/catalogue/models.py
+++ b/src/catalogue/models.py
@@ -1,28 +1,62 @@
 from collections import Counter
 from collections import Counter

+from datetime import date, timedelta

 import decimal
 import decimal

+import re
+from urllib.request import urlopen

 from django.apps import apps
 from django.apps import apps

+from django.conf import settings

 from django.db import models
 from django.db import models

+from django.template.loader import render_to_string

 from django.urls import reverse
 from django.utils.translation import gettext_lazy as _
 from django.urls import reverse
 from django.utils.translation import gettext_lazy as _

+from admin_ordering.models import OrderableModel

 from wikidata.client import Client
 from .constants import WIKIDATA
 from wikidata.client import Client
 from .constants import WIKIDATA

-from .wikidata import WikidataMixin
+from .wikidata import WikidataModel
+from .wikimedia import WikiMedia

 
 
 
 

-class Author(WikidataMixin, models.Model):
+class Author(WikidataModel):

     slug = models.SlugField(max_length=255, null=True, blank=True, unique=True)
     first_name = models.CharField(_("first name"), max_length=255, blank=True)
     last_name = models.CharField(_("last name"), max_length=255, blank=True)
     slug = models.SlugField(max_length=255, null=True, blank=True, unique=True)
     first_name = models.CharField(_("first name"), max_length=255, blank=True)
     last_name = models.CharField(_("last name"), max_length=255, blank=True)

+    genitive = models.CharField(
+        'dopełniacz', max_length=255, blank=True,
+        help_text='utwory … (czyje?)'
+    )

 
     name_de = models.CharField(_("name (de)"), max_length=255, blank=True)
     name_lt = models.CharField(_("name (lt)"), max_length=255, blank=True)
 
     gender = models.CharField(_("gender"), max_length=255, blank=True)
     nationality = models.CharField(_("nationality"), max_length=255, blank=True)
 
     name_de = models.CharField(_("name (de)"), max_length=255, blank=True)
     name_lt = models.CharField(_("name (lt)"), max_length=255, blank=True)
 
     gender = models.CharField(_("gender"), max_length=255, blank=True)
     nationality = models.CharField(_("nationality"), max_length=255, blank=True)

+

     year_of_birth = models.SmallIntegerField(_("year of birth"), null=True, blank=True)
     year_of_birth = models.SmallIntegerField(_("year of birth"), null=True, blank=True)

-    place_of_birth = models.CharField(_('place of birth'), max_length=255, blank=True)
+    year_of_birth_inexact = models.BooleanField(_("inexact"), default=False)
+    year_of_birth_range = models.SmallIntegerField(_("year of birth, range end"), null=True, blank=True)
+    date_of_birth = models.DateField(_("date_of_birth"), null=True, blank=True)
+    century_of_birth = models.SmallIntegerField(
+        _("century of birth"), null=True, blank=True,
+        help_text=_('Set if year unknown. Negative for BC.')
+    )
+    place_of_birth = models.ForeignKey(
+        'Place', models.PROTECT, null=True, blank=True,
+        verbose_name=_('place of birth'),
+        related_name='authors_born'
+    )

     year_of_death = models.SmallIntegerField(_("year of death"), null=True, blank=True)
     year_of_death = models.SmallIntegerField(_("year of death"), null=True, blank=True)

-    place_of_death = models.CharField(_('place of death'), max_length=255, blank=True)
+    year_of_death_inexact = models.BooleanField(_("inexact"), default=False)
+    year_of_death_range = models.SmallIntegerField(_("year of death, range end"), null=True, blank=True)
+    date_of_death = models.DateField(_("date_of_death"), null=True, blank=True)
+    century_of_death = models.SmallIntegerField(
+        _("century of death"), null=True, blank=True,
+        help_text=_('Set if year unknown. Negative for BC.')
+    )
+    place_of_death = models.ForeignKey(
+        'Place', models.PROTECT, null=True, blank=True,
+        verbose_name=_('place of death'),
+        related_name='authors_died'
+    )

     status = models.PositiveSmallIntegerField(
         _("status"), 
         null=True,
     status = models.PositiveSmallIntegerField(
         _("status"), 
         null=True,


@@ -34,13 +68,16 @@ class Author(WikidataMixin, models.Model):
             (4, _("Unknown")),
         ],
     )
             (4, _("Unknown")),
         ],
     )

-    notes = models.TextField(_("notes"), blank=True)
+    notes = models.TextField(_("notes"), blank=True, help_text=_('private'))
+

     gazeta_link = models.CharField(_("gazeta link"), max_length=255, blank=True)
     culturepl_link = models.CharField(_("culture.pl link"), max_length=255, blank=True)
     gazeta_link = models.CharField(_("gazeta link"), max_length=255, blank=True)
     culturepl_link = models.CharField(_("culture.pl link"), max_length=255, blank=True)

+    plwiki = models.CharField(blank=True, max_length=255)
+    photo = models.ImageField(blank=True, null=True, upload_to='catalogue/author/')
+    photo_source = models.CharField(blank=True, max_length=255)
+    photo_attribution = models.CharField(max_length=255, blank=True)

 
 

-    description = models.TextField(_("description"), blank=True)
-    description_de = models.TextField(_("description (de)"), blank=True)
-    description_lt = models.TextField(_("description (lt)"), blank=True)
+    description = models.TextField(_("description"), blank=True, help_text=_('for publication'))

 
     priority = models.PositiveSmallIntegerField(
         _("priority"), 
 
     priority = models.PositiveSmallIntegerField(
         _("priority"), 


@@ -48,6 +85,8 @@ class Author(WikidataMixin, models.Model):
     )
     collections = models.ManyToManyField("Collection", blank=True, verbose_name=_("collections"))
 
     )
     collections = models.ManyToManyField("Collection", blank=True, verbose_name=_("collections"))
 

+    woblink = models.IntegerField(null=True, blank=True)
+    

     class Meta:
         verbose_name = _('author')
         verbose_name_plural = _('authors')
     class Meta:
         verbose_name = _('author')
         verbose_name_plural = _('authors')


@@ -56,9 +95,22 @@ class Author(WikidataMixin, models.Model):
     class Wikidata:
         first_name = WIKIDATA.GIVEN_NAME
         last_name = WIKIDATA.LAST_NAME
     class Wikidata:
         first_name = WIKIDATA.GIVEN_NAME
         last_name = WIKIDATA.LAST_NAME

+        date_of_birth = WIKIDATA.DATE_OF_BIRTH
+        year_of_birth = WIKIDATA.DATE_OF_BIRTH
+        place_of_birth = WIKIDATA.PLACE_OF_BIRTH
+        date_of_death = WIKIDATA.DATE_OF_DEATH

         year_of_death = WIKIDATA.DATE_OF_DEATH
         year_of_death = WIKIDATA.DATE_OF_DEATH

+        place_of_death = WIKIDATA.PLACE_OF_DEATH

         gender = WIKIDATA.GENDER
         gender = WIKIDATA.GENDER

-        notes = "description"
+        notes = WikiMedia.append("description")
+        plwiki = "plwiki"
+        photo = WikiMedia.download(WIKIDATA.IMAGE)
+        photo_source = WikiMedia.descriptionurl(WIKIDATA.IMAGE)
+        photo_attribution = WikiMedia.attribution(WIKIDATA.IMAGE)
+
+        def _supplement(obj):
+            if not obj.first_name and not obj.last_name:
+                yield 'first_name', 'label'

 
     def __str__(self):
         name = f"{self.first_name} {self.last_name}"
 
     def __str__(self):
         name = f"{self.first_name} {self.last_name}"


@@ -69,6 +121,16 @@ class Author(WikidataMixin, models.Model):
     def get_absolute_url(self):
         return reverse("catalogue_author", args=[self.slug])
 
     def get_absolute_url(self):
         return reverse("catalogue_author", args=[self.slug])
 

+    @classmethod
+    def get_by_literal(cls, literal):
+        names = literal.split(',', 1)
+        names = [n.strip() for n in names]
+        if len(names) == 2:
+            return cls.objects.filter(last_name=names[0], first_name=names[1]).first()
+        else:
+            return cls.objects.filter(last_name=names[0], first_name='').first() or \
+                cls.objects.filter(first_name=names[0], last_name='').first()
+

     @property
     def name(self):
         return f"{self.last_name}, {self.first_name}"
     @property
     def name(self):
         return f"{self.last_name}, {self.first_name}"


@@ -82,10 +144,63 @@ class Author(WikidataMixin, models.Model):
         else:
             return None
 
         else:
             return None
 

-
-class Category(WikidataMixin, models.Model):
+    def generate_description(self):
+        t = render_to_string(
+            'catalogue/author_description.html',
+            {'obj': self}
+        )
+        return t
+
+    def century_description(self, number):
+        n = abs(number)
+        letters = ''
+        while n > 10:
+            letters += 'X'
+            n -= 10
+        if n == 9:
+            letters += 'IX'
+            n = 0
+        elif n >= 5:
+            letters += 'V'
+            n -= 5
+        if n == 4:
+            letters += 'IV'
+            n = 0
+        letters += 'I' * n
+        letters += ' w.'
+        if number < 0:
+            letters += ' p.n.e.'
+        return letters
+
+    def birth_century_description(self):
+        return self.century_description(self.century_of_birth)
+
+    def death_century_description(self):
+        return self.century_description(self.century_of_death)
+
+    def year_description(self, number):
+        n = abs(number)
+        letters = str(n)
+        letters += ' r.'
+        if number < 0:
+            letters += ' p.n.e.'
+        return letters
+
+    def year_of_birth_description(self):
+        return self.year_description(self.year_of_birth)
+    def year_of_death_description(self):
+        return self.year_description(self.year_of_death)
+
+
+class NotableBook(OrderableModel):
+    author = models.ForeignKey(Author, models.CASCADE)
+    book = models.ForeignKey('Book', models.CASCADE)
+
+
+class Category(WikidataModel):

     name = models.CharField(_("name"), max_length=255)
     slug = models.SlugField(max_length=255, unique=True)
     name = models.CharField(_("name"), max_length=255)
     slug = models.SlugField(max_length=255, unique=True)

+    description = models.TextField(_("description"), blank=True, help_text=_('for publication'))

 
     class Meta:
         abstract = True
 
     class Meta:
         abstract = True


@@ -93,25 +208,48 @@ class Category(WikidataMixin, models.Model):
     def __str__(self):
         return self.name
 
     def __str__(self):
         return self.name
 

+

 class Epoch(Category):
 class Epoch(Category):

+    adjective_feminine_singular = models.CharField(
+        'przymiotnik pojedynczy żeński', max_length=255, blank=True,
+        help_text='twórczość … Adama Mickiewicza'
+    )
+    adjective_nonmasculine_plural = models.CharField(
+        'przymiotnik mnogi niemęskoosobowy', max_length=255, blank=True,
+        help_text='utwory … Adama Mickiewicza'
+    )
+

     class Meta:
         verbose_name = _('epoch')
         verbose_name_plural = _('epochs')
 
 
 class Genre(Category):
     class Meta:
         verbose_name = _('epoch')
         verbose_name_plural = _('epochs')
 
 
 class Genre(Category):

+    plural = models.CharField(
+        'liczba mnoga', max_length=255, blank=True,
+    )
+    is_epoch_specific = models.BooleanField(
+        default=False,
+        help_text='Po wskazaniu tego gatunku, dodanie epoki byłoby nadmiarowe, np. „dramat romantyczny”'
+    )
+

     class Meta:
         verbose_name = _('genre')
         verbose_name_plural = _('genres')
 
 
 class Kind(Category):
     class Meta:
         verbose_name = _('genre')
         verbose_name_plural = _('genres')
 
 
 class Kind(Category):

+    collective_noun = models.CharField(
+        'określenie zbiorowe', max_length=255, blank=True,
+        help_text='np. „Liryka” albo „Twórczość dramatyczna”'
+    )
+

     class Meta:
         verbose_name = _('kind')
         verbose_name_plural = _('kinds')
 
 
     class Meta:
         verbose_name = _('kind')
         verbose_name_plural = _('kinds')
 
 

-class Book(WikidataMixin, models.Model):
+class Book(WikidataModel):

     slug = models.SlugField(max_length=255, blank=True, null=True, unique=True)
     authors = models.ManyToManyField(Author, blank=True, verbose_name=_("authors"))
     translators = models.ManyToManyField(
     slug = models.SlugField(max_length=255, blank=True, null=True, unique=True)
     authors = models.ManyToManyField(Author, blank=True, verbose_name=_("authors"))
     translators = models.ManyToManyField(


@@ -132,11 +270,12 @@ class Book(WikidataMixin, models.Model):
     )
     scans_source = models.CharField(_("scans source"), max_length=255, blank=True)
     text_source = models.CharField(_("text source"), max_length=255, blank=True)
     )
     scans_source = models.CharField(_("scans source"), max_length=255, blank=True)
     text_source = models.CharField(_("text source"), max_length=255, blank=True)

-    notes = models.TextField(_("notes"), blank=True)
+    notes = models.TextField(_("notes"), blank=True, help_text=_('private'))

     priority = models.PositiveSmallIntegerField(
         _("priority"),
         default=0, choices=[(0, _("Low")), (1, _("Medium")), (2, _("High"))]
     )
     priority = models.PositiveSmallIntegerField(
         _("priority"),
         default=0, choices=[(0, _("Low")), (1, _("Medium")), (2, _("High"))]
     )

+    original_year = models.IntegerField(_('original publication year'), null=True, blank=True)

     pd_year = models.IntegerField(_('year of entry into PD'), null=True, blank=True)
     gazeta_link = models.CharField(_("gazeta link"), max_length=255, blank=True)
     collections = models.ManyToManyField("Collection", blank=True, verbose_name=_("collections"))
     pd_year = models.IntegerField(_('year of entry into PD'), null=True, blank=True)
     gazeta_link = models.CharField(_("gazeta link"), max_length=255, blank=True)
     collections = models.ManyToManyField("Collection", blank=True, verbose_name=_("collections"))


@@ -148,6 +287,9 @@ class Book(WikidataMixin, models.Model):
     free_license = models.BooleanField(_('free license'), default=False)
     polona_missing = models.BooleanField(_('missing on Polona'), default=False)
 
     free_license = models.BooleanField(_('free license'), default=False)
     polona_missing = models.BooleanField(_('missing on Polona'), default=False)
 

+    monthly_views_reader = models.IntegerField(default=0)
+    monthly_views_page = models.IntegerField(default=0)
+    

     class Meta:
         ordering = ("title",)
         verbose_name = _('book')
     class Meta:
         ordering = ("title",)
         verbose_name = _('book')


@@ -159,16 +301,19 @@ class Book(WikidataMixin, models.Model):
         title = WIKIDATA.TITLE
         language = WIKIDATA.LANGUAGE
         based_on = WIKIDATA.BASED_ON
         title = WIKIDATA.TITLE
         language = WIKIDATA.LANGUAGE
         based_on = WIKIDATA.BASED_ON

-        notes = "description"
+        original_year = WIKIDATA.PUBLICATION_DATE
+        notes = WikiMedia.append("description")

 
     def __str__(self):
         txt = self.title
 
     def __str__(self):
         txt = self.title

+        if self.original_year:
+            txt = f"{txt} ({self.original_year})"

         astr = self.authors_str()
         if astr:
         astr = self.authors_str()
         if astr:

-            txt = f"{astr} – {txt}"
+            txt = f"{txt}, {astr}"

         tstr = self.translators_str()
         if tstr:
         tstr = self.translators_str()
         if tstr:

-            txt = f"{txt} (tłum. {tstr})"
+            txt = f"{txt}, tłum. {tstr}"

         return txt
 
     def get_absolute_url(self):
         return txt
 
     def get_absolute_url(self):


@@ -179,26 +324,98 @@ class Book(WikidataMixin, models.Model):
         return f'https://wolnelektury.pl/katalog/lektura/{self.slug}/'
     
     def authors_str(self):
         return f'https://wolnelektury.pl/katalog/lektura/{self.slug}/'
     
     def authors_str(self):

+        if not self.pk:
+            return ''

         return ", ".join(str(author) for author in self.authors.all())
     authors_str.admin_order_field = 'authors__last_name'
     authors_str.short_description = _('Author')
 
     def translators_str(self):
         return ", ".join(str(author) for author in self.authors.all())
     authors_str.admin_order_field = 'authors__last_name'
     authors_str.short_description = _('Author')
 
     def translators_str(self):

+        if not self.pk:
+            return ''

         return ", ".join(str(author) for author in self.translators.all())
     translators_str.admin_order_field = 'translators__last_name'
     translators_str.short_description = _('Translator')
 
         return ", ".join(str(author) for author in self.translators.all())
     translators_str.admin_order_field = 'translators__last_name'
     translators_str.short_description = _('Translator')
 

+    def authors_first_names(self):
+        return ', '.join(a.first_name for a in self.authors.all())
+
+    def authors_last_names(self):
+        return ', '.join(a.last_name for a in self.authors.all())
+
+    def translators_first_names(self):
+        return ', '.join(a.first_name for a in self.translators.all())
+
+    def translators_last_names(self):
+        return ', '.join(a.last_name for a in self.translators.all())
+
+    def document_book__project(self):
+        b = self.document_books.first()
+        if b is None: return ''
+        if b.project is None: return ''
+        return b.project.name
+
+    def audience(self):
+        try:
+            return self.document_books.first().wldocument().book_info.audience or ''
+        except:
+            return ''
+

     def get_estimated_costs(self):
         return {
             work_type: work_type.calculate(self)
             for work_type in WorkType.objects.all()
         }
 
     def get_estimated_costs(self):
         return {
             work_type: work_type.calculate(self)
             for work_type in WorkType.objects.all()
         }
 

+    def update_monthly_stats(self):
+        # Find publication date.
+        # By default, get previous 12 months.
+        this_month = date.today().replace(day=1)
+        cutoff = this_month.replace(year=this_month.year - 1)
+        months = 12
+
+        # If the book was published later,
+        # find out the denominator.
+        pbr = apps.get_model('documents', 'BookPublishRecord').objects.filter(
+            book__catalogue_book=self).order_by('timestamp').first()
+        if pbr is not None and pbr.timestamp.date() > cutoff:
+            months = (this_month - pbr.timestamp.date()).days / 365 * 12
+
+        if not months:
+            return
+
+        stats = self.bookmonthlystats_set.filter(date__gte=cutoff).aggregate(
+            views_page=models.Sum('views_page'),
+            views_reader=models.Sum('views_reader')
+        )
+        self.monthly_views_page = stats['views_page'] / months
+        self.monthly_views_reader = stats['views_reader'] / months
+        self.save(update_fields=['monthly_views_page', 'monthly_views_reader'])
+
+    @property
+    def content_stats(self):
+        if hasattr(self, '_content_stats'):
+            return self._content_stats
+        try:
+            stats = self.document_books.first().wldocument().get_statistics()['total']
+        except Exception as e:
+            stats = {}
+        self._content_stats = stats
+        return stats
+
+    chars = lambda self: self.content_stats.get('chars', '')
+    chars_with_fn = lambda self: self.content_stats.get('chars_with_fn', '')
+    words = lambda self: self.content_stats.get('words', '')
+    words_with_fn = lambda self: self.content_stats.get('words_with_fn', '')
+    verses = lambda self: self.content_stats.get('verses', '')
+    verses_with_fn = lambda self: self.content_stats.get('verses_with_fn', '')
+    chars_out_verse = lambda self: self.content_stats.get('chars_out_verse', '')
+    chars_out_verse_with_fn = lambda self: self.content_stats.get('chars_out_verse_with_fn', '')

 
 class CollectionCategory(models.Model):
     name = models.CharField(_("name"), max_length=255)
     parent = models.ForeignKey('self', models.SET_NULL, related_name='children', null=True, blank=True, verbose_name=_("parent"))
 
 class CollectionCategory(models.Model):
     name = models.CharField(_("name"), max_length=255)
     parent = models.ForeignKey('self', models.SET_NULL, related_name='children', null=True, blank=True, verbose_name=_("parent"))

-    notes = models.TextField(_("notes"), blank=True)
+    notes = models.TextField(_("notes"), blank=True, help_text=_('private'))

 
     class Meta:
         ordering = ('parent__name', 'name')
 
     class Meta:
         ordering = ('parent__name', 'name')


@@ -216,7 +433,8 @@ class Collection(models.Model):
     name = models.CharField(_("name"), max_length=255)
     slug = models.SlugField(max_length=255, unique=True)
     category = models.ForeignKey(CollectionCategory, models.SET_NULL, null=True, blank=True, verbose_name=_("category"))
     name = models.CharField(_("name"), max_length=255)
     slug = models.SlugField(max_length=255, unique=True)
     category = models.ForeignKey(CollectionCategory, models.SET_NULL, null=True, blank=True, verbose_name=_("category"))

-    notes = models.TextField(_("notes"), blank=True)
+    notes = models.TextField(_("notes"), blank=True, help_text=_('private'))
+    description = models.TextField(_("description"), blank=True)

 
     class Meta:
         ordering = ('category', 'name')
 
     class Meta:
         ordering = ('category', 'name')


@@ -297,3 +515,102 @@ class WorkRate(models.Model):
             if book.estimated_chars:
                 return (decimal.Decimal(book.estimated_chars) / 1800 * self.per_normpage).quantize(decimal.Decimal('1.00'), rounding=decimal.ROUND_HALF_UP)
 
             if book.estimated_chars:
                 return (decimal.Decimal(book.estimated_chars) / 1800 * self.per_normpage).quantize(decimal.Decimal('1.00'), rounding=decimal.ROUND_HALF_UP)
 

+
+class Place(WikidataModel):
+    name = models.CharField(_('name'), max_length=255, blank=True)
+    locative = models.CharField(_('locative'), max_length=255, blank=True, help_text=_('in…'))
+
+    class Meta:
+        verbose_name = _('place')
+        verbose_name_plural = _('places')
+    
+    class Wikidata:
+        name = 'label'
+
+    def __str__(self):
+        return self.name
+
+
+class BookMonthlyStats(models.Model):
+    book = models.ForeignKey('catalogue.Book', models.CASCADE)
+    date = models.DateField()
+    views_reader = models.IntegerField(default=0)
+    views_page = models.IntegerField(default=0)
+
+    @classmethod
+    def build_for_month(cls, date):
+        date = date.replace(day=1)
+        period = 'month'
+
+        date = date.isoformat()
+        url = f'{settings.PIWIK_URL}?date={date}&filter_limit=-1&format=CSV&idSite={settings.PIWIK_WL_SITE_ID}&language=pl&method=Actions.getPageUrls&module=API&period={period}&segment=&token_auth={settings.PIWIK_TOKEN}&flat=1'
+        data = urlopen(url).read().decode('utf-16')
+        lines = data.split('\n')[1:]
+        for line in lines:
+            m = re.match('^/katalog/lektura/([^,./]+)\.html,', line)
+            if m is not None:
+                which = 'views_reader'
+            else:
+                m = re.match('^/katalog/lektura/([^,./]+)/,', line)
+                if m is not None:
+                    which = 'views_page'
+            if m is not None:
+                slug = m.group(1)
+                _url, _uviews, views, _rest = line.split(',', 3)
+                views = int(views)
+                try:
+                    book = Book.objects.get(slug=slug)
+                except Book.DoesNotExist:
+                    continue
+                else:
+                    cls.objects.update_or_create(
+                        book=book, date=date,
+                        defaults={which: views}
+                    )
+                    book.update_monthly_stats()
+
+
+class Thema(models.Model):
+    code = models.CharField(max_length=128, unique=True)
+    name = models.CharField(max_length=1024)
+    slug = models.SlugField(
+        max_length=255, null=True, blank=True, unique=True,
+        help_text='Element adresu na WL, w postaci: /tag/slug/. Można zmieniać.'
+    )
+    plural = models.CharField(
+        'liczba mnoga', max_length=255, blank=True,
+    )
+    description = models.TextField(blank=True)
+    public_description = models.TextField(blank=True)
+    usable = models.BooleanField()
+    usable_as_main = models.BooleanField(default=False)
+    hidden = models.BooleanField(default=False)
+    woblink_category = models.IntegerField(null=True, blank=True)
+
+    class Meta:
+        ordering = ('code',)
+        verbose_name_plural = 'Thema'
+
+
+class Audience(models.Model):
+    code = models.CharField(
+        max_length=128, unique=True,
+        help_text='Techniczny identifyikator. W miarę możliwości nie należy zmieniać.'
+    )
+    name = models.CharField(
+        max_length=1024,
+        help_text='W formie: „dla … (kogo?)”'
+    )
+    slug = models.SlugField(
+        max_length=255, null=True, blank=True, unique=True,
+        help_text='Element adresu na WL, w postaci: /dla/slug/. Można zmieniać.'
+    )
+    description = models.TextField(blank=True)
+    thema = models.CharField(
+        max_length=32, blank=True,
+        help_text='Odpowiadający kwalifikator Thema.'
+    )
+    woblink = models.IntegerField(null=True, blank=True)
+
+    class Meta:
+        ordering = ('code',)