Hello
I have two models and 1-to-many relation between them, using ForeignKey
(gallery with pictures). Additionally instances on 'many' side are
ordered_with_respect_to owning instance. I need to iterate over them in
template, respecting imposed order. I can use
"get_pictureingallery_order" on owner instance but all I get is IDs, not
instance itself.
Moreover, situation like this repeats itself, each of instances on
'many' side has (ordered) many instances of a third model, also ordered
(subtitles for a piture). And these also need to be iterated over with
respect to imposed order.
How to do it?
Simplified code:
# models.py
class Gallery(models.Model):
...
class PictureInGallery(models.Model):
picture = models.ForeignKey(Picture)
gallery = models.ForeignKey(Gallery)
class Meta:
order_with_respect_to = 'gallery'
...
class PictureSubtitle(models.Model):
picture_in_gallery = models.ForeignKey(PictureInGallery)
subtitle = models.CharField(max_length=50)
class Meta:
order_with_respect_to = 'picture_in_gallery'
# gallery.html
# iteration without respect to order (yields improper order)
{% for picture_in_gallery in gallery.pictureingallery_set.all %}
<img src="{{picture_in_gallery.picture.image.url}}" />
{% for subtitle in picture_in_gallery.picturesubtitle_set.all %}
{{subtitle}}
{% endfor %}
{% endfor %}
# iteration with respect to order (yields proper order of IDs but
doesn't yield instances)
{% for picture_in_gallery_id in gallery.get_pictureingallery_order %}
{{picture_in_gallery_id}}
{% endfor %}
Thanks in advance
Marek
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