Hi, why does not the following work?
My simple model:
class Author(models.Model):
name = models.CharField(maxlength=255)
def __str__(self):
return self.name
class Article(models.Model):
author = models.ForeignKey(Author)
title = models.CharField(maxlength=255)
def __str__(self):
return self.name
Now, onto the action:
----------------------
In [10]: Author.objects.create(name='Jiri Barton')
In [11]: Author.objects.filter(name='Jiri Barton')
Out[11]: [<Author: Jiri Barton>]
In [12]: Author.objects.filter(name='Jiri Barton') |
Author.objects.filter(article__title__icontains='revealed')
Out[12]: []
-------------------------
The database contains one row in the Author table. That's it.
One would believe that Out[12] should be the same as Out[11]. This is
very confusing. Adding an OR condition should never shrink the set.
BTW, here is the SQL behind the scenes:
SELECT `press_author`.`id`,`press_author`.`name` FROM `press_author`
INNER JOIN `press_article` AS `press_author__article` ON
`press_author`.`id` = `press_author__article`.`author_id` WHERE
((`press_author`.`name` = 'Jiri Barton') OR
(`press_author__article`.`title` LIKE '%revealed%'))
Is there another way I can phrase the query?
TIA,
Jiri
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