I tried to add a method to the Category class like this:
def get_feed_items(self):
"""
Returns the feed items for feeds in a category.
"""
return FeedItems.objects.filter(feed__category=self)
But I get a Name Error because FeedItems aren't defined. How can I
define these when they're not defined in the model until after the
Category (and Feed)?
On Mar 10, 11:01 am, "[EMAIL PROTECTED]"
<[EMAIL PROTECTED]> wrote:
> I'm putting together a basic feed aggregator with the following
> classes in my app's model: category, feed and feeditem. Each feed is
> tied to a category (ForeignKey), and each feeditem is tied to a Feed
> (ForeignKey).
>
> Here is my model:
> ------------
> from django.db import models
>
> class Category(models.Model):
> slug = models.SlugField(prepopulate_from=('title',), help_text='This
> field will prepopulate from the title field.', unique=True)
> title = models.CharField(max_length=50)
> description = models.TextField(help_text='A brief summary of this
> category.')
>
> class Admin:
> list_display = ('slug', 'title')
>
> class Meta:
> verbose_name_plural = 'categories'
>
> def __unicode__(self):
> return self.title
>
> def get_feeds(self):
> """
> Returns the feed object for the category.
> """
> return Feed.objects.filter(category=self)
>
> def get_absolute_url(self):
> return '/category/%s/' % (self.slug)
>
> class Feed(models.Model):
> title = models.CharField(max_length=200, help_text='The name of
> the site providing the feed.')
> feed_url = models.URLField(unique=True, help_text='The feed URL.')
> public_url = models.URLField(help_text='The URL of the site
> providing the feed.')
> is_defunct = models.BooleanField()
> category = models.ForeignKey(Category)
>
> class Meta:
> db_table = 'aggregator_feeds'
>
> class Admin:
> list_filter = ('category',)
>
> def __unicode__(self):
> return self.title
>
> def get_feeditems(self):
> """
> Returns the feeditem object for the feed.
> """
> return FeedItem.objects.filter(feed=self)
>
> def get_absolute_url(self):
> return self.feed_url
>
> class FeedItem(models.Model):
> feed = models.ForeignKey(Feed)
> title = models.CharField(max_length=200)
> link = models.URLField()
> summary = models.TextField(blank=True)
> date_modified = models.DateTimeField()
> guid = models.CharField(max_length=200, unique=True,
> db_index=True)
>
> class Meta:
> db_table = 'aggregator_feeditems'
> ordering = ("-date_modified",)
>
> def __unicode__(self):
> return self.title
>
> def get_absolute_url(self):
> return self.link
> ----------
>
> I want to be able to display the FeedItems for a given category. What
> would be the best way to approach this?
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