filter on multiple tables

[Soumen Khatua]

Actually I want to filter all users those are matched with currently logged in users based on location or education details like maybe institute_name or specialization. Is it possible to search in multiple tables?!
I almost spent 2 days but still I stuck in the position.
Any help would be appreciated.

Thank You

Regards,

Soumen

class Location(models.Model):
    name = models.CharField(max_length = 15)

class Profile(models.Model):
    user = models.OneToOneField(
        settings.AUTH_USER_MODEL,
        on_delete = models.CASCADE,
        related_name="profile"
    )
    location = models.ManyToManyField(Location,related_name = 'user_locations')

class Education(models.Model):
    profile = models.ForeignKey(Profile, on_delete=models.CASCADE,related_name="profiles")
    institute_name = models.CharField(max_length = 250)
    specialization = models.CharField(max_length = 100)

[אורי‎]

Hi Soumen,

You can filter on another table by using <table_name>__<field>, for example:

User.objects.filter(profile__profiles__institute_name="Example")

Or:

User.objects.filter(profile__profiles__institute_name__in=["Example 1", "Example 2"])

אורי

u...@speedy.net

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[Soumen Khatua]

Hi,

whenever I'm trying to filter as per your convention I'm getting some error like FieldError:

Eg. profile = Profile.objects.filter(education__profile__institute_name="IIT KGP")

of course, I'm getting this error because Profile is working here as a Foreign Key, in Education table.

actually I want to fetch all the users those are from the same Institution or Specialization or location.


Thank you for your response and time.

Regards,

Soumen

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[Soumen Khatua]

Thank You, for your guidance.I think I'm very close to this problem.

Thank you once again.

‪On Fri, May 29, 2020 at 9:56 AM ‫אורי‬‎ <u...@speedy.net> wrote:‬

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