Why do you want to do this! It looks complicated and badly formed.
-V
On Mon, Mar 3, 2014 at 12:11 AM, Kakar Nyori <nyorika...@gmail.com> wrote:
> Hello,
> This may be long, but I really need your help. I have a class *Asset*,
> which is the *base class* of another *classes *(like *Photo, Question,
> Video etc.*) Basically its a *Multiple Table Inheritance*. I need this to
> get all the post or all the *objects* of the user. And it does what I
> want. But I saw that, many were against *Multiple Table Inheritance, *or
> if not they discouraged MTI. So, I really need to know that, *how much
> will it matter*? Or is there any other way to achieve it. To get all the
> objects of a *User*? Please help me decide what to do. If I am not clear,
> please ask me. I will really appreciate if anyone would guide me through
> this.
>
> Thank you.
>
> *This are my models:*
>
>
> class Asset(models.Model):
> user = models.ForeignKey(User, related_name = "user_objects")
> likes = models.ManyToManyField(User, through="Like",
> related_name="Liked_user")
> comments = models.ManyToManyField(User, through="Comment",
> related_name="Commented_user")
> timestamp = models.DateTimeField(auto_now = True, auto_now_add= False)
> updated = models.DateTimeField(auto_now = False, auto_now_add = True)
>
> class Meta:
> ordering = ['-timestamp']
>
> def __unicode__(self):
> return self.__class__.__name__
>
> class Like(models.Model):
> asset = models.ForeignKey(Asset)
> liked_by = models.ForeignKey(User)
> liked_time = models.DateTimeField(auto_now = True, auto_now_add = False)
>
> def __unicode__(self):
> return "%s likes %s" % (self.liked_by, self.asset)
>
> class Comment(models.Model):
> asset = models.ForeignKey(Asset)
> comment_by = models.ForeignKey(User)
> liked_time = models.DateTimeField(auto_now = True, auto_now_add = False)
>
> def __unicode__(self):
> return "%s likes %s" % (self.comment_by, self.asset)
>
> def get_upload_file_name(instance, filename):
> return "uploaded_files/%s_%s" %(str(time()).replace('.','_'), filename)
>
> class Album(Asset):
> title = models.CharField(max_length=200)
> description = models.TextField()
>
> def __unicode__(self):
> return self.__class__.__name__
>
>
> class Picture(Asset):
> description = models.TextField()
> image = models.ImageField(upload_to=get_upload_file_name)
> album = models.ForeignKey(Album, null=True, blank=True, default = None)
>
> def __unicode__(self):
> return self.__class__.__name__
>
> class BackgroundImage(Picture):
> pass
>
> class ProfilePicture(Picture):
> pass
>
> class Tag(models.Model):
> title = models.CharField(max_length=40)
> description = models.TextField()
>
> def __unicode__(self):
> return self.title
>
> class Question(Asset):
> title = models.CharField(max_length=200)
> description = models.TextField()
> tags = models.ManyToManyField(Tag)
>
> def __unicode__(self):
> return self.title
>
> class Answer(Asset):
> description = models.TextField()
> question = models.ForeignKey(Question)
>
> def __unicode__(self):
> return self.description
>
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