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