fix for non-sectioned lessons nav

[edumed.git] / catalogue / models.py

diff --git a/catalogue/models.py b/catalogue/models.py
index ea5dff2..652f972 100644 (file)
--- a/catalogue/models.py
+++ b/catalogue/models.py
@@ -1,36 +1,93 @@
+from django.core.files import File
+from django.core.urlresolvers import reverse

 from django.db import models
 from django.db import models

-from curriculum.models import Level
+from jsonfield import JSONField
+from curriculum.models import Level, Curriculum, CurriculumCourse
+

 
 class Section(models.Model):
     title = models.CharField(max_length=255, unique=True)
 
 class Section(models.Model):
     title = models.CharField(max_length=255, unique=True)

-    slug = models.SlugField(unique=True)
+    slug = models.SlugField(max_length=255, unique=True)

     order = models.IntegerField()
     order = models.IntegerField()

+    xml_file = models.FileField(upload_to="catalogue/section/xml",
+        null=True, blank=True, max_length=255)

 
     class Meta:
         ordering = ['order']
 
 
     class Meta:
         ordering = ['order']
 

+    class IncompleteError(BaseException):
+        pass
+

     def __unicode__(self):
         return self.title
 
     def __unicode__(self):
         return self.title
 

+    def get_absolute_url(self):
+        return "%s#%s" % (reverse("catalogue_lessons"), self.slug)
+
+    @classmethod
+    def publish(cls, infile):
+        from librarian.parser import WLDocument
+        from django.core.files.base import ContentFile
+        xml = infile.get_string()
+        wldoc = WLDocument.from_string(xml)
+
+        try:
+            lessons = [Lesson.objects.get(slug=part.slug)
+                        for part in wldoc.book_info.parts]
+        except Lesson.DoesNotExist, e:
+            raise cls.IncompleteError(part.slug)
+
+        slug = wldoc.book_info.url.slug
+        try:
+            section = cls.objects.get(slug=slug)
+        except cls.DoesNotExist:
+            section = cls(slug=slug, order=0)
+
+        # Save XML file
+        section.xml_file.save('%s.xml' % slug, ContentFile(xml), save=False)
+        section.title = wldoc.book_info.title
+        section.save()
+
+        section.lesson_set.all().update(section=None)
+        for i, lesson in enumerate(lessons):
+            lesson.section = section
+            lesson.order = i
+            lesson.save()
+
+        return section
+
+    def syntetic_lesson(self, level):
+        try:
+            return self.lesson_set.filter(type='synthetic', level=level)[0]
+        except IndexError:
+            return None
+
+

 class Lesson(models.Model):
 class Lesson(models.Model):

-    section = models.ForeignKey(Section)
+    section = models.ForeignKey(Section, null=True, blank=True)

     level = models.ForeignKey(Level)
     title = models.CharField(max_length=255)
     level = models.ForeignKey(Level)
     title = models.CharField(max_length=255)

-    slug = models.SlugField(unique=True)
-    depth = models.IntegerField()
-    order = models.IntegerField()
+    slug = models.SlugField(max_length=255, unique=True)
+    type = models.CharField(max_length=15, db_index=True)
+    order = models.IntegerField(db_index=True)
+    dc = JSONField(default='{}')
+    curriculum_courses = models.ManyToManyField(CurriculumCourse)

 
     xml_file = models.FileField(upload_to="catalogue/lesson/xml",
 
     xml_file = models.FileField(upload_to="catalogue/lesson/xml",

-        null=True, blank=True) # FIXME: slug in paths
-    package = models.FileField(upload_to="catalogue/lesson/package",
-        null=True, blank=True)
-    student_package = models.FileField(upload_to="catalogue/lesson/student",
-        null=True, blank=True)
+        null=True, blank=True, max_length=255)

     html_file = models.FileField(upload_to="catalogue/lesson/html",
     html_file = models.FileField(upload_to="catalogue/lesson/html",

-        null=True, blank=True)
+        null=True, blank=True, max_length=255)
+    package = models.FileField(upload_to="catalogue/lesson/pack",
+        null=True, blank=True, max_length=255)
+    student_package = models.FileField(upload_to="catalogue/lesson/student_pack",
+        null=True, blank=True, max_length=255)
+    pdf = models.FileField(upload_to="catalogue/lesson/pdf",
+        null=True, blank=True, max_length=255)
+    student_pdf = models.FileField(upload_to="catalogue/lesson/student_pdf",
+        null=True, blank=True, max_length=255)

 
     class Meta:
 
     class Meta:

-        ordering = ['section', 'level', 'depth', 'order']
+        ordering = ['section', 'level', 'order']

 
     def __unicode__(self):
         return self.title
 
     def __unicode__(self):
         return self.title


@@ -38,3 +95,158 @@ class Lesson(models.Model):
     @models.permalink
     def get_absolute_url(self):
         return ('catalogue_lesson', [self.slug])
     @models.permalink
     def get_absolute_url(self):
         return ('catalogue_lesson', [self.slug])

+
+    @classmethod
+    def publish(cls, infile):
+        from librarian.parser import WLDocument
+        from django.core.files.base import ContentFile
+        xml = infile.get_string()
+        wldoc = WLDocument.from_string(xml)
+
+        # Check if not section metadata block.
+        if wldoc.book_info.parts:
+            return Section.publish(infile)
+        
+        slug = wldoc.book_info.url.slug
+        try:
+            lesson = cls.objects.get(slug=slug)
+            lesson.attachment_set.all().delete()
+        except cls.DoesNotExist:
+            lesson = cls(slug=slug, order=0)
+
+        # Save XML file
+        lesson.xml_file.save('%s.xml' % slug, ContentFile(xml), save=False)
+        lesson.title = wldoc.book_info.title
+
+        lesson.level = Level.objects.get(slug=wldoc.book_info.audience)
+        lesson.populate_dc()
+        lesson.build_html(infile=infile)
+        lesson.build_pdf(infile=infile)
+        lesson.build_pdf(student=True, infile=infile)
+        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.type = self.dc["type"]
+        self.save()
+
+        courses = set()
+        for identifier in wldoc.book_info.curriculum:
+            try:
+                curr = Curriculum.objects.get(identifier=identifier)
+            except Curriculum.DoesNotExist:
+                pass
+            else:
+                courses.add(curr.course)
+        self.curriculum_courses = courses
+
+    def wldocument(self, infile=None):
+        from librarian import IOFile
+        from librarian.parser import WLDocument
+        from .publish import OrmDocProvider
+
+        if infile is None:
+            infile = IOFile.from_filename(self.xml_file.path)
+            for att in self.attachment_set.all():
+                infile.attachments["%s.%s" % (att.slug, att.ext)] = \
+                    IOFile.from_filename(att.file.path)
+        return WLDocument(infile, provider=OrmDocProvider())
+
+    def build_html(self, infile=None):
+        from .publish import HtmlFormat
+        wldoc = self.wldocument(infile)
+        html = HtmlFormat(wldoc).build()
+        self.html_file.save("%s.html" % self.slug,
+            File(open(html.get_filename())))
+
+    def build_pdf(self, student=False, infile=None):
+        from .publish import PdfFormat
+        wldoc = self.wldocument(infile)
+        if student:
+            pdf = PdfFormat(wldoc).build()
+            self.student_pdf.save("%s.pdf" % self.slug,
+                File(open(pdf.get_filename())))
+        else:
+            pdf = PdfFormat(wldoc, teacher=True).build()
+            self.pdf.save("%s.pdf" % self.slug,
+                File(open(pdf.get_filename())))
+
+    def add_to_zip(self, zipf, student=False, prefix=''):
+        zipf.write(self.xml_file.path,
+            "%spliki-zrodlowe/%s.xml" % (prefix, self.slug))
+        pdf = self.student_pdf if student else self.pdf
+        if pdf:
+            zipf.write(pdf.path, 
+                "%s%s%s.pdf" % (prefix, self.slug, "_student" if student else ""))
+        for attachment in self.attachment_set.all():
+            zipf.write(attachment.file.path,
+                u"%smaterialy/%s.%s" % (prefix, attachment.slug, attachment.ext))
+            
+        
+
+    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)
+        self.add_to_zip(zipf, student)
+        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()))
+
+    def get_syntetic(self):
+        if self.section is None: return None
+        return self.section.syntetic_lesson(self.level)
+
+    def get_other_level(self):
+        if self.section is None: return None
+        other_levels = self.section.lesson_set.exclude(level=self.level)
+        if other_levels.exists():
+            return other_levels[0].level
+
+    def get_previous(self):
+        if self.section is None: return None
+        try:
+            return self.section.lesson_set.filter(
+                type=self.type, level=self.level,
+                order__lt=self.order).order_by('-order')[0]
+        except IndexError:
+            return None
+
+    def get_next(self):
+        if self.section is None: return None
+        try:
+            return self.section.lesson_set.filter(
+                type=self.type, level=self.level,
+                order__gt=self.order).order_by('order')[0]
+        except IndexError:
+            return None
+
+
+class Attachment(models.Model):
+    slug = models.CharField(max_length=255)
+    ext = models.CharField(max_length=15)
+    lesson = models.ForeignKey(Lesson)
+    file = models.FileField(upload_to="catalogue/attachment")
+
+    class Meta:
+        ordering = ['slug', 'ext']
+        unique_together = ['lesson', 'slug', 'ext']
+
+    def __unicode__(self):
+        return "%s.%s" % (self.slug, self.ext)
+
+
+class Part(models.Model):
+    lesson = models.ForeignKey(Lesson)
+    pdf = models.FileField(upload_to="catalogue/part/pdf",
+        null=True, blank=True)
+    student_pdf = models.FileField(upload_to="catalogue/part/student_pdf",
+        null=True, blank=True)