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.storage import BofhFileSystemStorage
   7 from fnpdjango.utils.models.translation import add_translatable
   8 from fnpdjango.utils.text.slughifi import slughifi as slugify
   9
  10 bofh_storage = BofhFileSystemStorage()
  11
  12
  13 class Section(models.Model):
  14     slug = models.SlugField(_('slug'))
  15     order = models.IntegerField(_('order'))
  16
  17     class Meta:
  18         ordering = ['order']
  19         verbose_name = _('section')
  20         verbose_name_plural = _('sections')
  21
  22     def __unicode__(self):
  23         return self.name
  24
  25     def get_absolute_url(self):
  26         return "%s?s=%d" % (reverse("curriculum"), self.pk)
  27
  28     def url_for_level(self, level):
  29         return "%s?s=%d&level=%s&d=1" % (reverse("curriculum"), self.pk, level.slug)
  30
  31 add_translatable(Section, {
  32     'name': models.CharField(_('name'), max_length=255, default='')
  33 })
  34
  35
  36 class Competence(models.Model):
  37     section = models.ForeignKey(Section)
  38     slug = models.SlugField(_('slug'))
  39     order = models.IntegerField(_('order'))
  40
  41     class Meta:
  42         ordering = ['section', 'order']
  43         verbose_name = _('competence')
  44         verbose_name_plural = _('competences')
  45
  46     def __unicode__(self):
  47         return self.name
  48
  49     def get_absolute_url(self):
  50         return "%s?c=%d" % (reverse("curriculum"), self.pk)
  51
  52     def for_level(self, level):
  53         return self.competencelevel_set.get(level=level)
  54
  55     def url_for_level(self, level):
  56         return self.for_level(level).get_absolute_url()
  57
  58     @classmethod
  59     def from_text(cls, text):
  60         """Tries to return a Competence or a Section."""
  61         parts = re.split(ur'[-\u2013]', text, 1)
  62         lookup_field_name = 'name_%s__iexact' % get_language()
  63         if len(parts) == 1:
  64             return Section.objects.get(**{lookup_field_name: text.strip()})
  65         else:
  66             return cls.objects.get(**{lookup_field_name: parts[1].strip()})
  67
  68 add_translatable(Competence, {
  69     'name': models.CharField(_('name'), max_length=255, default='')
  70 })
  71
  72
  73 class Level(models.Model):
  74     slug = models.CharField(_('slug'), max_length=255, unique=True)
  75     meta_name = models.CharField(_('meta name'), max_length=255, unique=True)
  76     order = models.IntegerField(_('order'))
  77     package = models.FileField(
  78         upload_to=lambda i, f: "curriculum/pack/edukacjamedialna_%s.zip" % i.slug,
  79         null=True, blank=True, max_length=255, storage=bofh_storage)
  80     student_package = models.FileField(
  81         upload_to=lambda i, f: "curriculum/pack/edukacjamedialna_%s_uczen.zip" % i.slug,
  82         null=True, blank=True, max_length=255, storage=bofh_storage)
  83
  84     class Meta:
  85         ordering = ['order']
  86         verbose_name = _('educational level')
  87         verbose_name_plural = _('educational levels')
  88
  89     def __unicode__(self):
  90         return self.name
  91
  92     def length_course(self):
  93         return self.lesson_set.filter(type='course').count()
  94
  95     def length_synthetic(self):
  96         return self.lesson_set.filter(type='synthetic').count()
  97
  98     def build_package(self, student):
  99         from StringIO import StringIO
 100         import zipfile
 101         from django.core.files.base import ContentFile
 102         from catalogue.templatetags.catalogue_tags import level_box
 103         from catalogue.models import Lesson
 104
 105         buff = StringIO()
 106         zipf = zipfile.ZipFile(buff, 'w', zipfile.ZIP_STORED)
 107
 108         lessons = level_box(self)['lessons']
 109         for i, lesson in enumerate(lessons['synthetic']):
 110             prefix = 'Skrocony kurs/%d %s/' % (i, lesson.slug)
 111             lesson.add_to_zip(zipf, student, prefix)
 112         for c, (section, clessons) in enumerate(lessons['course'].items()):
 113             assert section, clessons
 114             for i, lesson in enumerate(clessons):
 115                 prefix = 'Pelny kurs/%d %s/%d %s/' % (c, section.slug, i, lesson.slug)
 116                 lesson.add_to_zip(zipf, student, prefix)
 117         for i, lesson in enumerate(lessons['project']):
 118             prefix = 'Projekty/%d %s/' % (i, lesson.slug)
 119             lesson.add_to_zip(zipf, student, prefix)
 120         # Add all appendix lessons, from all levels.
 121         for lesson in Lesson.objects.filter(type='appendix'):
 122             # ugly fix
 123             if self.slug in ('przedszkole', 'sp1-3', 'sp4-6'):
 124                 if lesson.slug == 'slowniczek':
 125                     continue
 126             else:
 127                 if lesson.slug == 'slowniczek-sp':
 128                     continue
 129             prefix = '%s/' % lesson.slug
 130             lesson.add_to_zip(zipf, student, prefix)
 131         zipf.close()
 132
 133         fieldname = "student_package" if student else "package"
 134         getattr(self, fieldname).save(None, ContentFile(buff.getvalue()))
 135
 136     def build_packages(self):
 137         self.build_package(False)
 138         self.build_package(True)
 139
 140
 141 add_translatable(Level, {
 142     'name': models.CharField(_('name'), max_length=255, default=''),
 143     'group': models.CharField(_('group'), max_length=255, default='')
 144 })
 145
 146
 147 class CompetenceLevel(models.Model):
 148     competence = models.ForeignKey(Competence)
 149     level = models.ForeignKey(Level)
 150
 151     class Meta:
 152         ordering = ['competence', 'level']
 153         verbose_name = _('competence on level')
 154         verbose_name_plural = _('competences on levels')
 155
 156     def __unicode__(self):
 157         return u"%s/%s" % (self.competence, self.level)
 158
 159     def get_absolute_url(self):
 160         return "%s?c=%d&level=%s&d=1" % (reverse("curriculum"), self.competence.pk, self.level.slug)
 161
 162 add_translatable(CompetenceLevel, {
 163     'description': models.TextField(_('description'), default='')
 164 })
 165
 166
 167 class CurriculumLevel(models.Model):
 168     title = models.CharField(max_length=16, db_index=True)
 169
 170     class Meta:
 171         verbose_name = _("curriculum level")
 172         verbose_name_plural = _("curriculum levels")
 173
 174     def __unicode__(self):
 175         return self.title
 176
 177
 178 class CurriculumCourse(models.Model):
 179     title = models.CharField(max_length=255)
 180     accusative = models.CharField(max_length=255)
 181     slug = models.CharField(max_length=255, db_index=True)
 182
 183     class Meta:
 184         verbose_name = _("curriculum course")
 185         verbose_name_plural = _("curriculum courses")
 186         ordering = ['slug']
 187
 188     def __unicode__(self):
 189         return self.title
 190
 191
 192 class Curriculum(models.Model):
 193     """Official curriculum."""
 194     TYPES = {'c': u'Cele kształcenia', 't': u'Treści nauczania', 'o': u'Osiągnięcia'}
 195
 196     identifier = models.CharField(max_length=255, db_index=True, unique=True)
 197     title = models.CharField(max_length=1024)
 198     course = models.ForeignKey(CurriculumCourse)
 199     level = models.ForeignKey(CurriculumLevel)
 200     type = models.CharField(max_length=16, choices=TYPES.items())
 201
 202     class Meta:
 203         ordering = ['identifier']
 204         verbose_name = _("curriculum item")
 205         verbose_name_plural = _("curriculum items")
 206
 207     def __unicode__(self):
 208         return self.identifier
 209
 210     @classmethod
 211     def from_text(cls, identifier, title):
 212         m = re.match(r"^\d+/(?P<level>[^/]+)/(?P<course>[^/]+)/"
 213                      r"(?P<type>(?:%s))[^/]+(?P<roz>/roz)?" % "|".join(cls.TYPES), identifier)
 214         assert m is not None, "Curriculum identifier doesn't match template."
 215         level, created = CurriculumLevel.objects.get_or_create(
 216                                        title=m.group('level'))
 217         def_title = m.group('course').capitalize()
 218         course, created = CurriculumCourse.objects.get_or_create(
 219                                         slug=slugify(m.group('course')),
 220                                         defaults={
 221                                             'title': def_title,
 222                                             'accusative': def_title,
 223                                         })
 224         type_ = m.group('type')
 225         if m.group('roz'):
 226             title += " (zakres rozszerzony)"
 227
 228         try:
 229             curr = cls.objects.get(identifier=identifier)
 230         except cls.DoesNotExist:
 231             curr = cls(identifier=identifier)
 232         curr.title = title
 233         curr.course = course
 234         curr.level = level
 235         curr.type = type_
 236         curr.save()
 237         return curr