Nrthugu

I am trying to create a UserProfile model in my user app and instead of inheriting from models.Model, I am inheriting from django's own User model so that I would have a custom user model wwith extra fields. But when I run the python manage.py test command it gives me the following error:

    Creating test database for alias 'default'...

Traceback (most recent call last):

  File "manage.py", line 15, in <module>

    execute_from_command_line(sys.argv)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagement__init__.py", line 381, in execute_from_command_line

    utility.execute()

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagement__init__.py", line 375, in execute

    self.fetch_command(subcommand).run_from_argv(self.argv)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagementcommandstest.py", line 26, in run_from_argv

    super().run_from_argv(argv)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagementbase.py", line 316, in run_from_argv

    self.execute(*args, **cmd_options)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagementbase.py", line 353, in execute

    output = self.handle(*args, **options)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagementcommandstest.py", line 56, in handle

    failures = test_runner.run_tests(test_labels)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangotestrunner.py", line 604, in run_tests

    old_config = self.setup_databases()

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangotestrunner.py", line 551, in setup_databases

    self.parallel, **kwargs

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangotestutils.py", line 174, in setup_databases

    serialize=connection.settings_dict.get('TEST', {}).get('SERIALIZE', True),

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbbackendsbasecreation.py", line 68, in create_test_db

    run_syncdb=True,

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagement__init__.py", line 148, in call_command

    return command.execute(*args, **defaults)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagementbase.py", line 353, in execute

    output = self.handle(*args, **options)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagementbase.py", line 83, in wrapped

    res = handle_func(*args, **kwargs)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangocoremanagementcommandsmigrate.py", line 203, in handle

    fake_initial=fake_initial,

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmigrationsexecutor.py", line 117, in migrate

    state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmigrationsexecutor.py", line 147, in _migrate_all_forwards

    state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmigrationsexecutor.py", line 244, in apply_migration

    state = migration.apply(state, schema_editor)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmigrationsmigration.py", line 124, in apply

    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmigrationsoperationsfields.py", line 216, in database_forwards

    schema_editor.alter_field(from_model, from_field, to_field)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbbackendssqlite3schema.py", line 127, in alter_field

    super().alter_field(model, old_field, new_field, strict=strict)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbbackendsbaseschema.py", line 495, in alter_field

    new_db_params = new_field.db_parameters(connection=self.connection)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmodelsfieldsrelated.py", line 966, in db_parameters

    return {"type": self.db_type(connection), "check": self.db_check(connection)}

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmodelsfieldsrelated.py", line 963, in db_type

    return self.target_field.rel_db_type(connection=connection)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmodelsfieldsrelated.py", line 878, in target_field

    return self.foreign_related_fields[0]

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmodelsfieldsrelated.py", line 632, in foreign_related_fields

    return tuple(rhs_field for lhs_field, rhs_field in self.related_fields if rhs_field)

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmodelsfieldsrelated.py", line 619, in related_fields

    self._related_fields = self.resolve_related_fields()

  File "C:UsersUserAppDataLocalProgramslibsite-packagesdjangodbmodelsfieldsrelated.py", line 604, in resolve_related_fields

    raise ValueError('Related model %r cannot be resolved' % self.remote_field.model)

ValueError: Related model 'user.UserProfile' cannot be resolved

Here is what my models.py look like.

class UserProfile(User):

    levels = [

        ('Beginner', 'Beginner'),

        ('Elementary', 'Elementary'),

        ('Pre-Intermediate', 'Pre-Intermediate'),

        ('Intermediate', 'Intermediate'),

        ('Upper-Intermediate', 'Upper-Intermediate'),

        ('Advanced', 'Advanced'),

    ]



    courses = [

        ('English', 'English'),

        ('Russian', 'Russian'),

        ('Mathematics', 'Mathematics'),



    ]



    titles = [

        ('Teacher', 'Teacher'),

        ('Student', 'Student'),

    ]



    icons = [

        ('fa-user', 'User'),

        ('fa-user-graduate', 'Student'),

        ('fa-user-ninja', 'Ninja'),

        ('fa-user-tie', 'Tie'),

        ('fa-user-md', 'Doctor'),

        ('fa-user-astronaut', 'Astronaut'),

        ('fa-user-secret', 'Spy'),

        ('fa-user-injured', 'Injured'),

    ]



    bio = models.TextField(blank=True)

    country = models.CharField(max_length = 100)

    course = models.CharField(

        max_length = 20,

        choices=courses,

        default='English',

    )

    level = models.CharField(

        max_length = 20,

        choices=levels,

        default='Beginner',

    )

    title = models.CharField(

        max_length = 20,

        choices=titles,

        default='Student',

    )

    avatar = models.ImageField(default='avatars/default_avatar.jpg', upload_to='avatars')

    icon = models.CharField(

        max_length = 150,

        choices = icons,

        default = 'fa-user'

    )





    def is_student(self):

        return self.title == 'Student'





    def is_teacher(self):

        return self.title == 'Teacher'



    def get_absolute_url(self):

        return reverse('user-profile', kwargs={'slug': self.username})



    def __str__(self):

        return f'{self.username} Profile'



    def save(self, **kwargs):

        super().save()



        img = Image.open(self.avatar.path)



        if img.height != img.width:

            w = img.width

            h = img.height



            if h > w:

                a = h - w

                box = (a/2, a/2, w, w)

            else:

                a = w - h

                box = (a/2, a/2, h, h)



            img = img.crop(box)



            if img.height > 500 or img.width > 500:

                output_size = (500, 500)

                img.thumbnail(output_size)

                img.save(self.avatar.path)

            else:

                img.save(self.avatar.path)

And I have added it in settings.py

I found what the problem was about!!!

It was because I was using my UserProfile model from user app as a ForeignKey on another model called Post as an author and the problem was there. Importing the model from another app directly and passing it there gives such error as it turns out. So following the documentation here https://docs.djangoproject.com/en/2.1/ref/models/fields/#django.db.models.ForeignKey

I created another model called User in my another app and inherited from my UserProfile and here is how my jollywood/models.py looks:

    from django.db import models

from django.utils import timezone

from user.models import UserProfile





class Post(models.Model):

    title = models.CharField(max_length = 150)

    auth = models.ForeignKey('User', on_delete=models.CASCADE)

    content_shown = models.TextField()

    content_hidden = models.TextField()

    date = models.DateTimeField(default=timezone.now)

    read = models.PositiveIntegerField()

    liked = models.PositiveIntegerField()

    thumbnail = models.ImageField(default='post_thumbs/default_thumb.jpg', upload_to='post_thumbs')





    def __str__(self):

        return self.title



class User(UserProfile):

    pass

and here is what my user/models.py looks like:

from django.db import models

from django.contrib.auth.models import User

from PIL import Image

from django.urls import reverse





class UserProfile(User):

    levels = [

        ('Beginner', 'Beginner'),

        ('Elementary', 'Elementary'),

        ('Pre-Intermediate', 'Pre-Intermediate'),

        ('Intermediate', 'Intermediate'),

        ('Upper-Intermediate', 'Upper-Intermediate'),

        ('Advanced', 'Advanced'),

    ]



    courses = [

        ('English', 'English'),

        ('Russian', 'Russian'),

        ('Mathematics', 'Mathematics'),



    ]



    titles = [

        ('Teacher', 'Teacher'),

        ('Student', 'Student'),

    ]



    icons = [

        ('fa-user', 'User'),

        ('fa-user-graduate', 'Student'),

        ('fa-user-ninja', 'Ninja'),

        ('fa-user-tie', 'Tie'),

        ('fa-user-md', 'Doctor'),

        ('fa-user-astronaut', 'Astronaut'),

        ('fa-user-secret', 'Spy'),

        ('fa-user-injured', 'Injured'),

    ]



    bio = models.TextField(blank=True)

    country = models.CharField(max_length = 100)

    course = models.CharField(

        max_length = 20,

        choices=courses,

        default='English',

    )

    level = models.CharField(

        max_length = 20,

        choices=levels,

        default='Beginner',

    )

    title = models.CharField(

        max_length = 20,

        choices=titles,

        default='Student',

    )

    avatar = models.ImageField(default='avatars/default_avatar.jpg', upload_to='avatars')

    icon = models.CharField(

        max_length = 150,

        choices = icons,

        default = 'fa-user'

    )

    instagram = models.CharField(max_length = 100, null=True)

    facebook = models.CharField(max_length = 100, null=True)

    twitter = models.CharField(max_length = 100, null=True)

    telegram = models.CharField(max_length = 100, null=True)



    def is_student(self):

        return self.title == 'Student'





    def is_teacher(self):

        return self.title == 'Teacher'



    def get_absolute_url(self):

        return reverse('user-profile', kwargs={'slug': self.username})



    def __str__(self):

        return f'{self.username} Profile'



    def save(self, **kwargs):

        super().save()



        img = Image.open(self.avatar.path)



        if img.height != img.width:

            w = img.width

            h = img.height



            if h > w:

                a = h - w

                box = (a/2, a/2, w, w)

            else:

                a = w - h

                box = (a/2, a/2, h, h)



            img = img.crop(box)



            if img.height > 500 or img.width > 500:

                output_size = (500, 500)

                img.thumbnail(output_size)

                img.save(self.avatar.path)

            else:

                img.save(self.avatar.path)