* added app 'archive' to provides downloads

  o models: Archive, ArchiveCategory
  o views: ArchiveView based on TemplateView
  o template: archive.html
  o sidebar: sidebar.js, sidebar.css

1 files changed, 79 insertions, 0 deletions

diff --git a/archive/models.py b/archive/models.py
new file mode 100644
index 0000000..791750a
--- /dev/null
+++ b/archive/models.py
@@ -0,0 +1,79 @@
+# -*- coding: utf-8 -*-
+
+from django.db import models
+from django.contrib.auth.models import User
+from django.contrib.contenttypes.models import ContentType
+from django.contrib.contenttypes import generic
+from django.utils.translation import ugettext_lazy as _
+
+from django.db.models.signals import pre_delete
+
+from account.extra import OverwriteStorage, file_cleanup
+
+
+class Archive(models.Model):
+    """
+    model 'Archive' to record uploaded files and provide downloads
+    """
+    title = models.CharField(_("Title"), max_length=100)
+    pubtime = models.DateTimeField(_("Publish time"), auto_now_add=True)
+    category = models.ForeignKey('ArchiveCategory', verbose_name=_("Category"))
+    publisher = models.ForeignKey(User, verbose_name=_("Publisher"))
+    description = models.TextField(_("Description"))
+    file = models.FileField(verbose_name=_("File"),
+            upload_to=lambda instance, filename: u'archive/cat{0}/{1}'.format(instance.category.id, filename),
+            storage=OverwriteStorage())
+
+    class Meta:
+        verbose_name = _('archive')
+        verbose_name_plural = _('archives')
+        ordering = ['category', '-pubtime', 'id']
+
+    def __unicode__(self):
+        return u'Archive %s: %s' % (self.category.name, self.title)
+
+    def show_pubtime(self):
+        # used in 'list_notice.html' template
+        return self.pubtime.strftime('%Y-%m-%d')
+
+    def save(self, *args, **kwargs):
+        """
+        overwrite the original save method to delete old file
+        """
+        if not self.pk:
+            # -> create
+            return super(type(self), self).save(*args, **kwargs)
+        # already exists -> edit
+        old_obj = type(self).objects.get(pk=self.pk)
+        result = super(type(self), self).save(*args, **kwargs)
+        # if the path is the same, the file is overwritten already
+        if old_obj.file.name:
+            # old_obj has file
+            if not self.file.name:
+                # new object has no file
+                old_obj.file.delete(save=False)
+            elif old_obj.file.path != self.file.path:
+                # new object has file, and differ from old_obj
+                old_obj.file.delete(save=False)
+        #
+        return result
+
+
+class ArchiveCategory(models.Model):
+    """
+    model 'NoticeCategory' to provide category selections for 'Notice'
+    """
+    name = models.CharField(_("Category name"), max_length=100)
+    created_at = models.DateTimeField(_("Created time"), auto_now_add=True)
+
+    class Meta:
+        verbose_name = _('archive category')
+        verbose_name_plural = _('archive categories')
+
+    def __unicode__(self):
+        return u'ArchiveCategory: %s' % self.name
+
+
+### connect to signal and sender
+pre_delete.connect(file_cleanup, sender=Archive)
+