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 blog
class 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 <http://b.id> AND lower(t.name <http://t.name>)
> IN ('tag1', 'tag2', 'tag3') );
>
> How to represent the same query with the Django QuerySets ?
>
> Thanks,
> Dean De Leo
>
>
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