py2.6 zipfile has no context manager

[edumed.git] / catalogue / models.py

diff --git a/catalogue/models.py b/catalogue/models.py
index 8ff6be4..7b6b1b2 100644 (file)
--- a/catalogue/models.py
+++ b/catalogue/models.py
@@ -1,7 +1,10 @@
 from django.core.files import File
+from django.core.urlresolvers import reverse
 from django.db import models
+from jsonfield import JSONField
 from curriculum.models import Level
 
+
 class Section(models.Model):
     title = models.CharField(max_length=255, unique=True)
     slug = models.SlugField(unique=True)
@@ -13,6 +16,16 @@ class Section(models.Model):
     def __unicode__(self):
         return self.title
 
+    def get_absolute_url(self):
+        return "%s#%s" % (reverse("catalogue_lessons"), self.slug)
+
+    def syntetic_lesson(self):
+        try:
+            return self.lesson_set.filter(depth=0)[0]
+        except IndexError:
+            return None
+
+
 class Lesson(models.Model):
     section = models.ForeignKey(Section)
     level = models.ForeignKey(Level)
@@ -20,6 +33,7 @@ class Lesson(models.Model):
     slug = models.SlugField(unique=True)
     depth = models.IntegerField()
     order = models.IntegerField()
+    dc = JSONField(default='{}')
 
     xml_file = models.FileField(upload_to="catalogue/lesson/xml",
         null=True, blank=True) # FIXME: slug in paths
@@ -70,14 +84,43 @@ class Lesson(models.Model):
         lesson.section = Section.objects.all()[0]
         lesson.order = 1
         lesson.depth = 1
-
-        # Build HTML.
-        html = wldoc.as_html()
-        lesson.html_file.save("%s.html" % slug,
-            File(open(html.get_filename())), save=False)
+        lesson.populate_dc()
         lesson.save()
+        lesson.build_html()
+        lesson.build_package()
+        lesson.build_package(student=True)
         return lesson
 
+    def populate_dc(self):
+        from librarian.parser import WLDocument
+        wldoc = WLDocument.from_file(self.xml_file.path)
+        self.dc = wldoc.book_info.to_dict()
+        self.save()
+
+    def build_html(self):
+        from librarian.parser import WLDocument
+        wldoc = WLDocument.from_file(self.xml_file.path)
+        html = wldoc.as_html()
+        self.html_file.save("%s.html" % self.slug,
+            File(open(html.get_filename())))
+
+    def build_package(self, student=False):
+        from StringIO import StringIO
+        import zipfile
+        from django.core.files.base import ContentFile
+        buff = StringIO()
+        zipf = zipfile.ZipFile(buff, 'w', zipfile.ZIP_STORED)
+        zipf.write(self.xml_file.path, "pliki-zrodlowe/%s.xml" % self.slug)
+        pdf = self.student_pdf if student else self.pdf
+        if pdf:
+            zipf.write(self.xml_file.path, 
+                "%s%s.pdf" % (self.slug, "_student" if student else ""))
+        zipf.close()
+        fieldname = "student_package" if student else "package"
+        getattr(self, fieldname).save(
+            "%s%s.zip" % (self.slug, "_student" if student else ""),
+            ContentFile(buff.getvalue()))
+
 
 class Attachment(models.Model):
     lesson = models.ForeignKey(Lesson)