if you see many similarities between two models will surely are the same
thing. So BackgroundImage and ProfilePicture are the same thing and Photo
its very similar to. I think you must to use inheritance of models [1] an
use choices [2] for distinct types of pics
I would do the following:
class Pics(models.Model):
PICS_TYPES = (
('PHOTOS', 'Photos'),
('BACKGROUNDS', 'Backgrounds'),
('PROFILES', 'Profiles')
)
user = models.ForeignKey(User)
image = models.ImageField(upload_to=get_upload_file_name)
caption = models.CharField(max_length=200)
pub_date = models.DateTimeField(default=datetime.now)
type = models.CharField(max_length=50, choices=PICS_TYPES)
class Album(models.Model):
user = models.ForeignKey(User)
name = models.CharField(max_length=200)
pub_date = models.DateTimeField(default=datetime.now)
class Photo(Pics):
album = models.ForeignKey(Album, default=3)
[1]
https://docs.djangoproject.com/en/1.5/topics/db/models/#model-inheritance
[2]
https://docs.djangoproject.com/en/1.5/ref/models/fields/#django.db.models.Field.choices
2013/11/5 Aamu Padi <[email protected]>
> Each user has many *albums*, and each album has its many photos. And each
> user has one *background image* to hold its many images. Similarly, a
> user has one *profile picture* to hold its many images.
>
> These are my models:
>
> class UserProfile(models.Model):
> user = models.OneToOneField(User)
> permanent_address = models.TextField()
> temporary_address = models.TextField()
> profile_pic = models.ForeignKey(ProfilePicture)
> background_pic = models.ForeignKey(BackgroundImage)
>
>
> class Album(models.Model):
> user = models.ForeignKey(User)
> name = models.CharField(max_length=200)
> pub_date = models.DateTimeField(default=datetime.now)
>
>
> class Photo(models.Model):
> album = models.ForeignKey(Album, default=3)
> image = models.ImageField(upload_to=get_upload_file_name)
> caption = models.CharField(max_length=200)
> pub_date = models.DateTimeField(default=datetime.now)
>
>
> class BackgroundImage(models.Model):
> user = models.ForeignKey(User)
> image = models.ImageField(upload_to=get_upload_file_name)
> caption = models.CharField(max_length=200)
> pub_date = models.DateTimeField(default=datetime.now)
>
>
> class ProfilePicture(models.Model):
> user = models.ForeignKey(User)
> image = models.ImageField(upload_to=get_upload_file_name)
> caption = models.CharField(max_length=200)
> pub_date = models.DateTimeField(default=datetime.now)
>
> I tried doing this, to let the user copy one image from *ProfilePicture*to
> *Background
> Image*, but didn't work:
>
> # Get the user
> >>>m = User.objects.get(username='m')
>
> # Get its set of Profile pictures
> >>>m_pro_set = m.profilepicture_set.all()
> >>>m_pro_set
> [<ProfilePicture: pro_mik>]
>
> # Get its set of Background images
> >>>m_back_set = m.backgroundimage_set.all()
> >>>m_back_set
> [<BackgroundImage: bg_mik>]
>
> # Get an image object from Profile picture of the user
> >>>m_pro_1 = m.profilepicture_set.get(id=2)
> >>>m_pro_1
> <ProfilePicture: pro_mik>
>
> # Get an image object from Background image of the user
> >>>m_back_1 = m.backgroundimage_set.get(id=2)
> >>>m_back_1
> <BackgroundImage: bg_mik>
>
> # So, I tried to copy one image from *BackgroundImage* of a user *to*
> *ProfilePicture*
>
> >>>m_pro_set.objects.create(m_back_1)
>
>
> * File "<console>", line 1, object has attribute 'objects'*
> *AttributeError: 'QuerySet' object has no attribute 'objects'*
>
> So my question is, how to copy an objects from one model to another? Any
> advice will be much appreciated. Thank you!
>
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--
Rafael E. Ferrero
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