curriculum/models.py

   1 # -*- coding: utf-8
   2 import re
   3 from django.core.urlresolvers import reverse
   4 from django.db import models
   5 from django.utils.translation import ugettext_lazy as _, get_language
   6 from fnpdjango.utils.models.translation import add_translatable
   7
   8 class Section(models.Model):
   9     slug = models.SlugField(_('slug'))
  10     order = models.IntegerField(_('order'))
  11
  12     class Meta:
  13         ordering = ['order']
  14         verbose_name = _('section')
  15         verbose_name_plural = _('sections')
  16
  17     def __unicode__(self):
  18         return self.name
  19
  20     def get_absolute_url(self):
  21         return "%s?s=%d" % (reverse("curriculum"), self.pk)
  22
  23     def url_for_level(self, level):
  24         return "%s?s=%d&level=%s&d=1" % (reverse("curriculum"), self.pk, level.slug)
  25
  26 add_translatable(Section, {
  27     'name': models.CharField(_('name'), max_length=255, default = '')
  28 })
  29
  30
  31 class Competence(models.Model):
  32     section = models.ForeignKey(Section)
  33     slug = models.SlugField(_('slug'))
  34     order = models.IntegerField(_('order'))
  35
  36     class Meta:
  37         ordering = ['section', 'order']
  38         verbose_name = _('competence')
  39         verbose_name_plural = _('competences')
  40
  41     def __unicode__(self):
  42         return self.name
  43
  44     def get_absolute_url(self):
  45         return "%s?c=%d" % (reverse("curriculum"), self.pk)
  46
  47     def for_level(self, level):
  48         return self.competencelevel_set.get(level=level)
  49
  50     def url_for_level(self, level):
  51         return self.for_level(level).get_absolute_url()
  52
  53     @classmethod
  54     def from_text(cls, text):
  55         """Tries to return a Competence or a Section."""
  56         parts = re.split(ur'[-\u2013]', text, 1)
  57         lookup_field_name = 'name_%s__iexact' % get_language()
  58         if len(parts) == 1:
  59             return Section.objects.get(**{lookup_field_name: text.strip()})
  60         else:
  61             return cls.objects.get(**{lookup_field_name: parts[1].strip()})
  62
  63 add_translatable(Competence, {
  64     'name': models.CharField(_('name'), max_length=255, default = '')
  65 })
  66
  67
  68 class Level(models.Model):
  69     slug = models.CharField(_('slug'), max_length=255)
  70     order = models.IntegerField(_('order'))
  71
  72     class Meta:
  73         ordering = ['order']
  74         verbose_name = _('educational level')
  75         verbose_name_plural = _('educational levels')
  76
  77     def __unicode__(self):
  78         return self.name
  79
  80 add_translatable(Level, {
  81     'name': models.CharField(_('name'), max_length=255, default = ''),
  82     'group': models.CharField(_('group'), max_length=255, default = '')
  83 })
  84
  85
  86 class CompetenceLevel(models.Model):
  87     competence = models.ForeignKey(Competence)
  88     level = models.ForeignKey(Level)
  89
  90     class Meta:
  91         ordering = ['competence', 'level']
  92         verbose_name = _('competence on level')
  93         verbose_name_plural = _('competences on levels')
  94
  95     def __unicode__(self):
  96         return u"%s/%s" % (self.competence, self.level)
  97
  98     def get_absolute_url(self):
  99         return "%s?c=%d&level=%s&d=1" % (reverse("curriculum"), self.competence.pk, self.level.slug)
 100
 101 add_translatable(CompetenceLevel, {
 102     'description': models.TextField(_('description'), default = '')
 103 })
 104
 105
 106 class CurriculumLevel(models.Model):
 107     title = models.CharField(max_length=16, db_index=True)
 108
 109     class Meta:
 110         verbose_name = _("curriculum level")
 111         verbose_name_plural = _("curriculum levels")
 112
 113     def __unicode__(self):
 114         return self.title
 115
 116
 117 class CurriculumCourse(models.Model):
 118     title = models.CharField(max_length=255)
 119     accusative = models.CharField(max_length=255)
 120     slug = models.CharField(max_length=255, db_index=True)
 121
 122     class Meta:
 123         verbose_name = _("curriculum course")
 124         verbose_name_plural = _("curriculum courses")
 125         ordering = ['slug']
 126
 127     def __unicode__(self):
 128         return self.title
 129
 130
 131 class Curriculum(models.Model):
 132     """Official curriculum."""
 133     TYPES = {'c': u'Cele kształcenia', 't': u'Treści nauczania'}
 134
 135     identifier = models.CharField(max_length=255, db_index=True)
 136     title = models.CharField(max_length=255)
 137     course = models.ForeignKey(CurriculumCourse)
 138     level = models.ForeignKey(CurriculumLevel)
 139     type = models.CharField(max_length=16, choices=TYPES.items())
 140
 141     class Meta:
 142         verbose_name = _("curriculum item")
 143         verbose_name_plural = _("curriculum items")
 144
 145     def __unicode__(self):
 146         return self.identifier
 147
 148     @classmethod
 149     def from_text(cls, identifier, title):
 150         m = re.match(r"^\d+/(?P<level>[^/]+)/(?P<course>[^/]+)/"
 151                      "(?P<type>(?:%s))[^/]+(?P<roz>/roz)?" %
 152                         "|".join(cls.TYPES), identifier)
 153         assert m is not None, "Curriculum identifier doesn't match template."
 154         level, created = CurriculumLevel.objects.get_or_create(
 155                                        title=m.group('level'))
 156         def_title = m.group('course').title()
 157         course, created = CurriculumCourse.objects.get_or_create(
 158                                         slug=m.group('course').lower(),
 159                                         defaults={
 160                                             'title': def_title,
 161                                             'accusative': def_title,
 162                                         })
 163         type_ = m.group('type')
 164         if m.group('roz'):
 165             title += " (zakres rozszerzony)"
 166
 167         try:
 168             curr = cls.objects.get(identifier=identifier)
 169         except cls.DoesNotExist:
 170             curr = cls(identifier=identifier)
 171         curr.title = title
 172         curr.course = course
 173         curr.level = level
 174         curr.type = type_
 175         curr.save()
 176         return curr
 177