add additional "and_tags" field to auto selection, for ANDing criterias

[django-panik-combo.git] / panikombo / models.py

diff --git a/panikombo/models.py b/panikombo/models.py
index 5c294bc667bbdbd85ec8f47010ed8aeaac11d08c..350f77e609fe11a3894a502929daede0bc985178 100644 (file)
--- a/panikombo/models.py
+++ b/panikombo/models.py
@@ -6,7 +6,9 @@ from django.db import models
 from django.utils.translation import ugettext_lazy as _
 
 from ckeditor.fields import RichTextField
+from taggit.models import Tag
 from taggit.managers import TaggableManager
+from taggit.utils import parse_tags
 
 from combo.data.models import CellBase
 from combo.data.library import register_cell_class
@@ -80,11 +82,23 @@ class EpisodeCell(CellBase):
         return ''
 
 
+def get_parsed_tags(tagstring):
+    tags = parse_tags(tagstring)
+    return [x for x in Tag.objects.filter(name__in=tags)]
+
+
 @register_cell_class
 class EpisodeAutoSelectionCell(CellBase):
     title = models.CharField(_('Title'), max_length=50, blank=True)
     tags = TaggableManager(_('Tags'), blank=True)
+    and_tags = models.CharField(_('And Tags'), max_length=100, blank=True)
     category = models.ForeignKey('emissions.Category', null=True, blank=True)
+    period = models.PositiveSmallIntegerField(
+            _('Period'), default=0,
+            choices=((0, _('All')),
+                     (1, _('Future')),
+                     (2, _('Past'))))
+
 
     class Meta:
         verbose_name = _('Automatic Episode Selection')
@@ -95,23 +109,46 @@ class EpisodeAutoSelectionCell(CellBase):
             episodes_queryset = episodes_queryset.filter(emission__categories__in=[self.category.id])
         if self.tags.count():
             episodes_queryset = episodes_queryset.filter(tags__in=self.tags.all())
+            if self.and_tags:
+                and_tags = get_parsed_tags(self.and_tags)
+                episodes_queryset = episodes_queryset.filter(tags__in=and_tags)
+
+        if self.period == 0:
+            episodes_queryset = episodes_queryset.extra(
+                    select={ 'first_diffusion': 'emissions_diffusion.datetime', },
+                    select_params=(False, True),
+                    where=['''datetime = (SELECT MIN(datetime) FROM emissions_diffusion
+                                           WHERE episode_id = emissions_episode.id)'''],
+                    tables=['emissions_diffusion'])
+        elif self.period == 1:
+            episodes_queryset = episodes_queryset.extra(
+                    select={ 'first_diffusion': 'emissions_diffusion.datetime', },
+                    select_params=(False, True),
+                    where=['''datetime = (SELECT MIN(datetime) FROM emissions_diffusion
+                                           WHERE episode_id = emissions_episode.id) AND
+                                                 datetime >= CURRENT_TIMESTAMP'''],
+                    tables=['emissions_diffusion'])
+        elif self.period == 2:
+            episodes_queryset = episodes_queryset.extra(
+                    select={ 'first_diffusion': 'emissions_diffusion.datetime', },
+                    select_params=(False, True),
+                    where=['''datetime = (SELECT MIN(datetime) FROM emissions_diffusion
+                                           WHERE episode_id = emissions_episode.id) AND
+                                                 datetime < CURRENT_TIMESTAMP'''],
+                    tables=['emissions_diffusion'])
+
         return episodes_queryset
 
     def render(self, context):
         tmpl = template.loader.get_template('panikombo/episode_auto_selection.html')
         context['title'] = self.title
 
-        episodes_queryset = self.get_included_items()
-        episodes_queryset = episodes_queryset.extra(select={
-                        'first_diffusion': 'emissions_diffusion.datetime',
-                        },
-                        select_params=(False, True),
-                        where=['''datetime = (SELECT MIN(datetime)
-                                                FROM emissions_diffusion
-                                               WHERE episode_id = emissions_episode.id)'''],
-                        tables=['emissions_diffusion'],
-                    ).order_by('-first_diffusion').distinct()
-        context['episodes'] = episodes_queryset
+        if (self.category or self.period or self.tags.count()):
+            episodes_queryset = self.get_included_items()
+            episodes_queryset = episodes_queryset.order_by('-first_diffusion').distinct()
+            context['episodes'] = episodes_queryset
+        else:
+            context['episodes'] = []
         return tmpl.render(context)
 
     def get_default_form_class(self):
@@ -127,6 +164,7 @@ class EpisodeAutoSelectionCell(CellBase):
 class NewsItemAutoSelectionCell(CellBase):
     title = models.CharField(_('Title'), max_length=50, blank=True)
     tags = TaggableManager(_('Tags'), blank=True)
+    and_tags = models.CharField(_('And Tags'), max_length=100, blank=True)
     future = models.BooleanField(_('Future Events Only'), default=True)
     category = models.ForeignKey('emissions.NewsCategory',
             verbose_name=_('Category'), null=True, blank=True)
@@ -138,6 +176,9 @@ class NewsItemAutoSelectionCell(CellBase):
         newsitems_queryset = NewsItem.objects.select_related()
         if self.tags.count():
             newsitems_queryset = newsitems_queryset.filter(tags__in=self.tags.all())
+            if self.and_tags:
+                and_tags = get_parsed_tags(self.and_tags)
+                newsitems_queryset = newsitems_queryset.filter(tags__in=and_tags)
         if self.future:
             newsitems_queryset = newsitems_queryset.filter(event_date__gte=date.today())
         if self.category:
@@ -148,7 +189,10 @@ class NewsItemAutoSelectionCell(CellBase):
     def render(self, context):
         tmpl = template.loader.get_template('panikombo/newsitem_auto_selection.html')
         context['title'] = self.title
-        context['newsitems'] = self.get_included_items()
+        if self.tags.count() or self.future or self.category:
+            context['newsitems'] = self.get_included_items()
+        else:
+            context['newsitems'] = []
         return tmpl.render(context)
 
     def get_default_form_class(self):