Removed location models and subclass limiting in favor of a ContentTypeRegistryLimite...

[philo.git] / contrib / julian / models.py

diff --git a/contrib/julian/models.py b/contrib/julian/models.py
index 33c4d51..29f5fd4 100644 (file)
--- a/contrib/julian/models.py
+++ b/contrib/julian/models.py
@@ -1,29 +1,84 @@
+from django.conf import settings
+from django.contrib.contenttypes.generic import GenericForeignKey
+from django.contrib.contenttypes.models import ContentType
+from django.core.exceptions import ValidationError
+from django.core.validators import RegexValidator
 from django.db import models
-from django.contrib.auth.models import User
-from philo.models.base import Tag, Entity, Titled
-import datetime
-
-if not hasattr(settings, 'PHILO_LOCATION_MODULE'):
-       class Location(Entity, Titled):
-               slug = models.SlugField(max_length=255, unique=True)
-
-# Needs to be organised in a sensical order.
-class Event(Entity, Titled):
-       description = models.TextField()
-       start_time = models.DateTimeField(blank=True, null=True)
-       end_time = models.DateTimeField(blank=True, null=True)
-       is_all_day_event = models.BooleanField(default=False)
-       location = models.ForeignKey(getattr(settings, 'PHILO_LOCATION_MODULE', Location), related_name='events', blank=True, null=True)
+from philo.models.base import Tag, Entity
+from philo.models.fields import TemplateField
+from philo.utils import ContentTypeRegistryLimiter
+import re
+
+
+# TODO: Could this regex more closely match the Formal Public Identifier spec?
+# http://xml.coverpages.org/tauber-fpi.html
+FPI_REGEX = re.compile(r"(|\+//|-//)[^/]+//[^/]+//[A-Z]{2}")
+
+
+location_content_type_limiter = ContentTypeRegistryLimiter()
+
+
+def register_location_model(model):
+       location_content_type_limiter.register_class(model)
+
+
+def unregister_location_model(model):
+       location_content_type_limiter.unregister_class(model)
+
+
+class Location(Entity):
+       name = models.CharField(max_length=255)
+       
+       def __unicode__(self):
+               return self.name
+
+
+register_location_model(Location)
+
+
+class TimedModel(models.Model):
+       start_date = models.DateField(help_text="YYYY-MM-DD")
+       start_time = models.TimeField(blank=True, null=True, help_text="HH:MM:SS - 24 hour clock")
+       end_date = models.DateField()
+       end_time = models.TimeField(blank=True, null=True)
+       
+       def is_all_day(self):
+               return self.start_time is None and self.end_time is None
+       
+       def clean(self):
+               if bool(self.start_time) != bool(self.end_time):
+                       raise ValidationError("A %s must have either a start time and an end time or neither.")
+               
+               if self.start_date > self.end_date or self.start_date == self.end_date and self.start_time > self.end_time:
+                       raise ValidationError("A %s cannot end before it starts." % self.__class__.__name__)
+       
+       class Meta:
+               abstract = True
+
+
+class Event(Entity, TimedModel):
+       name = models.CharField(max_length=255)
+       slug = models.SlugField(max_length=255)
+       
+       location_content_type = models.ForeignKey(ContentType, limit_choices_to=location_content_type_limiter)
+       location_pk = models.TextField()
+       location = GenericForeignKey('location_content_type', 'location_pk')
+       
+       description = TemplateField()
+       
        tags = models.ManyToManyField(Tag, blank=True, null=True)
-       parent_event = models.ForeignKey(Event, blank=True, null=True)                          # To handle series' of events.
-       user = models.ForeignKey(getattr(settings, 'PHILO_PERSON_MODULE', User))        # Should this be optional?
-       url = models.URLField(blank=True, null=True)
-       attachment = models.FileField(upload_to='events/attachments/%Y/%m/%d', blank=True, null=True)
-       image = models.ImageField(upload_to='events/images/%Y/%m/%d', blank=True, null=True)
+       
+       parent_event = models.ForeignKey('self', blank=True, null=True)
+       
+       owner = models.ForeignKey(getattr(settings, 'PHILO_PERSON_MODULE', 'auth.User'))
+       
+       # TODO: Add uid - use as pk?
 
 
-class Calendar(Entity, Titled):
-       slug = models.SlugField(max_length=255, unique=True)
+class Calendar(Entity):
+       name = models.CharField(max_length=100)
+       #slug = models.SlugField(max_length=255, unique=True)
        events = models.ManyToManyField(Event, related_name='calendars')
        
-# NOTES: Only let start time be blank if it has child events with times.
\ No newline at end of file
+       # TODO: Can we auto-generate this on save based on site id and calendar name and settings language?
+       uuid = models.CharField("Calendar UUID", max_length=100, unique=True, help_text="Should conform to Formal Public Identifier format. See <http://en.wikipedia.org/wiki/Formal_Public_Identifier>", validators=[RegexValidator(FPI_REGEX)])
\ No newline at end of file