Your model is incorrect. Each blog has only one tag? So you have only one
result per tag.
Tag.objects.get(name = "Alpha").blog
Em domingo, 8 de fevereiro de 2015 15:43:33 UTC-2, Dean De Leo escreveu:
>
> Hi, thanks for the reply.
> I still get the error:
> Exception Type: AttributeError Exception Value:
>
> 'Tag' object has no attribute 'blog_set'
>
>
> if rawtags:
> taglist = rawtags.split('/'); t = Tag.objects.get(name = "Alpha");
> blogentries = t.blog_set.all()else:
> blogentries = Blog.objects.all();
>
>
>
> My Models:
>
> # My blogclass Blog(models.Model):
> title = models.CharField(max_length=255)
> content = models.TextField(max_length=10000);
> dateAdd = models.DateTimeField(auto_now_add=True, null=False);
> dateEdit = models.DateTimeField(auto_now=True);
>
> class Meta:
> ordering = ['-id']
>
> class Tag(models.Model):
> name = models.CharField(max_length=255, null=False)
> blog = models.ForeignKey('Blog', null=False)
>
> class Meta:
> unique_together = [("name", "blog",)]
> ordering = ["name"]
>
>
> Am I mispelling something?
>
> Thanks,
> Dean De Leo
>
>
>
> On 08/02/15 16:55, Neto wrote:
>
> mytag = Tag.objects.get(id=1)
> mytag.blog_set.all()
>
> Em domingo, 8 de fevereiro de 2015 14:30:25 UTC-2, Dean De Leo escreveu:
>>
>> Hello,
>> I am trying to find how to filter the entries of my blog by a set of
>> tags, using the Django models.
>> In particular there are two relations:
>> Blog (id, title, content)
>> Tag ( name, blog_id )
>> with Tag.blog_id foreign key of Blog.id
>> I want to select all blog entries that contain a certain set of tags.
>> For instance, I would express the query in SQL as:
>> SELECT * FROM blog_blog b WHERE EXISTS ( SELECT 1 FROM blog_tag t WHERE
>> t.blog_id = b.id AND lower(t.name) IN ('tag1', 'tag2', 'tag3') );
>>
>> How to represent the same query with the Django QuerySets ?
>>
>> Thanks,
>> Dean De Leo
>>
>>
>>
>
--
You received this message because you are subscribed to the Google Groups
"Django users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/django-users.
To view this discussion on the web visit
https://groups.google.com/d/msgid/django-users/aadb6aac-ade4-4fe8-9d0b-d0a9ec74d159%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
