Try adding related_name='+' to your FK definition.
class ReleaseImageGallery(BaseImageGallery):
release = models.ForeignKey(Release, related_name='+', on_delete
=models.CASCADE)
class Meta:
verbose_name = "release image gallery"
verbose_name_plural = "release image galleries"
On Friday, August 6, 2021 at 6:07:52 PM UTC-5 Lloyd wrote:
> Addendum: the Release model is declared as follows:
>
> from django.db import models
> from tinymce import models as tinymce_models
>
> from artists.models import Artist
> from bands.models import Band
> from labels.models import Label
>
>
> class Release(models.Model):
> artist = models.ForeignKey(Artist, on_delete=models.CASCADE)
> band = models.ForeignKey(
> Band,
> on_delete=models.CASCADE,
> blank=True, null=True
> )
> title = models.CharField(max_length=200)
> label = models.ForeignKey(Label, on_delete=models.CASCADE)
> cat_no = models.CharField(
> max_length=200,
> blank=True,
> null=True,
> default='UNKNOWN'
> )
> country = models.CharField(
> max_length=200,
> blank=True,
> null=True,
> default=None
> )
> RELEASE_FORMAT_CHOICES = [
> ('LP', 'LP'),
> ('10INCHALBUM', '10" ALBUM'),
> ('7INCHEP', '7" EP'),
> ('12INCHEP', '12" EP'),
> ('12INCHSINGLE', '12" SINGLE'),
> ('10INCHSINGLE', '10" SINGLE'),
> ('7INCHSINGLE', '7" SINGLE'),
> ]
> release_format = models.CharField(
> max_length=200,
> choices=RELEASE_FORMAT_CHOICES,
> blank=True,
> null=True,
> default=None
> )
> year = models.PositiveSmallIntegerField()
> genre = models.CharField(
> max_length=200,
> blank=True,
> null=True,
> default=None
> )
> bio = tinymce_models.HTMLField(blank=True, null=True)
> date_created = models.DateTimeField(auto_now_add=True)
> date_modified = models.DateTimeField(auto_now=True)
>
> class Meta:
> verbose_name = "release"
> verbose_name_plural = "releases"
>
> def __str__(self):
> return self.title
>
>
>
>
> I suspect that something is going on with migrations. All migrations have
> been run and a user is already capturing data on a staging server, so I do
> not want to recreate the database.
>
>
> Regards,
> ~ Lloyd
>
>
> On Sat, Aug 7, 2021 at 1:02 AM Lloyd Dube <[email protected]> wrote:
>
>> Hi,
>>
>> I have two models, ReleaseImageGallery and ReleaseImage as follows:
>>
>> class ReleaseImageGallery(BaseImageGallery):
>> release = models.ForeignKey(Release, on_delete=models.CASCADE)
>>
>> class Meta:
>> verbose_name = "release image gallery"
>> verbose_name_plural = "release image galleries"
>>
>> and
>>
>> class ReleaseImage(BaseImage):
>> release_image_gallery = models.ForeignKey(ReleaseImageGallery,
>> on_delete=models.CASCADE)
>> image = models.ImageField(upload_to='release-images/', blank=True, null=
>> True)
>> class Meta:
>> verbose_name = "release image"
>> verbose_name_plural = "release images"
>>
>>
>>
>> My admin.py file is as follows:
>> from django.contrib import admin
>>
>> from .models import ReleaseImageGallery, ReleaseImage
>>
>>
>> class ReleaseImageInline(admin.StackedInline):
>> model = ReleaseImage
>> extra = 1
>>
>> class ReleaseImageGalleryAdmin(admin.ModelAdmin):
>> inlines = [ReleaseImageInline]
>> list_filter = ['date_created', 'date_modified']
>> search_fields = ['title']
>>
>>
>> admin.site.register(ReleaseImageGallery, ReleaseImageGalleryAdmin)
>>
>> When I run the project and log into the admin site, all works fine.
>>
>> While creating a new ReleaseImageGallery, I try to add a new Release
>> object (FK relationship) via a select list, an error is raised in the
>> add_view as follows:
>>
>> [image: add-release-fk-object.png]
>>
>> ```
>> Environment:
>>
>>
>> Request Method: GET
>> Request URL:
>> http://127.0.0.1:8000/admin/releases/release/add/?_to_field=id&_popup=1
>>
>> Django Version: 3.2.5
>> Python Version: 3.9.6
>> Installed Applications:
>> ['django.contrib.admin',
>> 'django.contrib.auth',
>> 'django.contrib.contenttypes',
>> 'django.contrib.sessions',
>> 'django.contrib.messages',
>> 'django.contrib.staticfiles',
>> 'tinymce',
>> 'nested_inline',
>> 'coresite.apps.CoreSiteConfig',
>> 'customadminoptions.apps.CustomAdminOptionsConfig',
>> 'baseimagegalleries.apps.BaseImageGalleriesConfig',
>> 'baseusers.apps.UsersConfig',
>> 'userprofiles.apps.UserProfilesConfig',
>> 'artists.apps.ArtistsConfig',
>> 'artistimagegalleries.apps.ArtistImageGalleriesConfig',
>> 'bands.apps.BandsConfig',
>> 'labels.apps.LabelsConfig',
>> 'releaseimagegalleries.apps.ReleaseImageGalleriesConfig',
>> 'releases.apps.ReleasesConfig']
>> Installed Middleware:
>> ('whitenoise.middleware.WhiteNoiseMiddleware',
>> 'django.middleware.security.SecurityMiddleware',
>> 'django.contrib.sessions.middleware.SessionMiddleware',
>> 'django.middleware.common.CommonMiddleware',
>> 'django.middleware.csrf.CsrfViewMiddleware',
>> 'django.contrib.auth.middleware.AuthenticationMiddleware',
>> 'django.contrib.messages.middleware.MessageMiddleware',
>> 'django.middleware.clickjacking.XFrameOptionsMiddleware')
>>
>>
>>
>> Traceback (most recent call last):
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/db/models/options.py",
>>
>> line 608, in get_field
>> return self.fields_map[field_name]
>>
>> During handling of the above exception ('_to_field'), another exception
>> occurred:
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/nested_inline/admin.py",
>>
>> line 217, in add_view
>> f = opts.get_field(k)
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/db/models/options.py",
>>
>> line 610, in get_field
>> raise FieldDoesNotExist("%s has no field named '%s'" %
>> (self.object_name, field_name))
>>
>> During handling of the above exception (Release has no field named
>> '_to_field'), another exception occurred:
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/core/handlers/exception.py",
>>
>> line 47, in inner
>> response = get_response(request)
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/core/handlers/base.py",
>>
>> line 181, in _get_response
>> response = wrapped_callback(request, *callback_args,
>> **callback_kwargs)
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/contrib/admin/options.py",
>>
>> line 616, in wrapper
>> return self.admin_site.admin_view(view)(*args, **kwargs)
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/utils/decorators.py",
>>
>> line 130, in _wrapped_view
>> response = view_func(request, *args, **kwargs)
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/views/decorators/cache.py",
>>
>> line 44, in _wrapped_view_func
>> response = view_func(request, *args, **kwargs)
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/contrib/admin/sites.py",
>>
>> line 232, in inner
>> return view(request, *args, **kwargs)
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/utils/decorators.py",
>>
>> line 43, in _wrapper
>> return bound_method(*args, **kwargs)
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/django/utils/decorators.py",
>>
>> line 130, in _wrapped_view
>> response = view_func(request, *args, **kwargs)
>> File
>> "/usr/local/Cellar/[email protected]/3.9.6/Frameworks/Python.framework/Versions/3.9/lib/python3.9/contextlib.py",
>>
>> line 79, in inner
>> return func(*args, **kwds)
>> File
>> "/Users/sd/Library/Caches/pypoetry/virtualenvs/afridisc-sWjK8x-o-py3.9/lib/python3.9/site-packages/nested_inline/admin.py",
>>
>> line 218, in add_view
>> except models.FieldDoesNotExist:
>>
>> Exception Type: AttributeError at /admin/releases/release/add/
>> Exception Value: module 'django.db.models' has no attribute
>> 'FieldDoesNotExist'
>> ```
>>
>> I have checked the class definitions and do not understand the breakage.
>> What am I missing?
>>
>> TIA.
>>
>>
>> Regards,
>> ~ Lloyd
>>
>
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