+ def length_course(self):
+ return self.lesson_set.filter(type='course').count()
+
+ def length_synthetic(self):
+ return self.lesson_set.filter(type='synthetic').count()
+
+ def build_package(self, student):
+ from StringIO import StringIO
+ import zipfile
+ from django.core.files.base import ContentFile
+ from catalogue.templatetags.catalogue_tags import level_box
+ from catalogue.models import Lesson
+
+ buff = StringIO()
+ zipf = zipfile.ZipFile(buff, 'w', zipfile.ZIP_STORED)
+
+ lessons = level_box(self)['lessons']
+ for i, lesson in enumerate(lessons['synthetic']):
+ prefix = 'Skrocony kurs/%d %s/' % (i, lesson.slug)
+ lesson.add_to_zip(zipf, student, prefix)
+ for c, (section, clessons) in enumerate(lessons['course'].items()):
+ for i, lesson in enumerate(clessons):
+ prefix = 'Pelny kurs/%d %s/%d %s/' % (c, section.slug, i, lesson.slug)
+ lesson.add_to_zip(zipf, student, prefix)
+ for i, lesson in enumerate(lessons['project']):
+ prefix = 'Kurs skrocony/%d %s/' % (i, lesson.slug)
+ lesson.add_to_zip(zipf, student, prefix)
+ # Add all appendix lessons, from all levels.
+ for lesson in Lesson.objects.exclude(type__in=('synthetic', 'course', 'project')):
+ prefix = '%s/' % lesson.slug
+ lesson.add_to_zip(zipf, student, prefix)
+ zipf.close()
+
+ fieldname = "student_package" if student else "package"
+ getattr(self, fieldname).save(None, ContentFile(buff.getvalue()))
+
+ def build_packages(self):
+ self.build_package(False)
+ self.build_package(True)
+
+
+