Good point.
Here's the models I'm talking about as they're slightly different than
your aforementioned solution.
class Collection(models.Model):
title = models.CharField(max_length=50, unique=True, help_text="eg:
Pokemon, Kiss, Baseball ...")
slug = models.SlugField(max_length=50, unique=True)
date_added = models.DateField(auto_now=True)
class CollectionItem(models.Model):
collection = models.ForeignKey(Collection)
number = models.IntegerField(help_text="Last Added")
image = models.ImageField(blank=True, upload_to='temp/')
date_added = models.DateField(auto_now=True)
So 'Collection' would be the 'trading card' set, and 'CollectionItem'
would be the individual trading card, eg: Pokemon Card #24. We may
only have images available for a few 'Pokemon' cards, eg: #3, 4, 8, 9.
So getting a default image that way?
See what I mean?
d
On Oct 10, 12:35 pm, Tim Chase <django.us...@tim.thechases.com> wrote:
> > I'm looping through an array of 'trading card' titles. For instance:
>
> > - Pokemon
> > - Kiss
> > - Baseball
>
> > Instead of showing just the title of the 'trading card', I'd like to
> > display an image of each instead.
> > But not all images are available for every card in a title, for
> > instance 'Pokemon' may only have cards/images for #4, 5, 8, 9 etc.
>
> > How can I get a list of all the titles of 'trading cards' with one
> > image alongside of the first image it finds available.
>
> You don't include code that shows how your view is handing off
> the image-list, but you can define a method on your card to
> return a sample image:
>
> class Card(Model):
> # ... stuff ...
> title = CharField(...)
> def thumbnail(self):
> try:
> return self.image_set[0]
> except IndexError:
> return default_image
> class Image(Model):
> card = ForeignKey(Card)
> image = ImageField(...)
> # ...
>
> which you can then use in your view
>
> {% for card in cards %}
> <div>
> <h2>{{ card.title }}</h2>
> <img src="{{ card.thumbnail.image.url }}" />
> </div>
> {% endfor %}
>
> If you have large quantities of cards, you may want to use
> .select_related() so that the image_set comes back pre-populated.
> Otherwise, you'll net a lot of extra DB hits you may not want.
>
> -tim
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