Hi, You shouldn't have to import since the models are in the same models.py
On Wednesday, January 26, 2022 at 2:26:13 PM UTC-5 [email protected] wrote: > After trying the suggestions I get these errors. > > supplier.models: > > class Supplier(models.Model): > > name = models.CharField(max_length=50) > > phone = models.CharField(max_length=15, null=True, blank=True) > > email = models.CharField(max_length=120, null=True, blank=True) > > country = models.CharField(max_length=120, null=True, blank=True) > > address = models.CharField(max_length=120, null=True, blank=True) > > city = models.CharField(max_length=120, null=True, blank=True) > > state = models.CharField(max_length=120, null=True, blank=True) > > zipCode = models.CharField(max_length=10, null=True, blank=True) > > > def __str__(self): > > return self.name > > > shipment.models: > > ---------------- > > > from django.db import models > > > from specie.models import Specie > > from supplier.models import Supplier > > > # Create your models here. > > > > class Shipment(models.Model): > > created = models.DateTimeField() > > specie = models.ManyToManyField(Specie) > > label = models.CharField(max_length=10) > > received = models.PositiveIntegerField() > > bad = models.PositiveIntegerField(default=0) > > non = models.PositiveIntegerField(default=0) > > doa = models.PositiveIntegerField(default=0) > > para = models.PositiveIntegerField(default=0) > > released = models.PositiveIntegerField(default=0) > > entered = models.BooleanField(default=False) > > supplier = models.ForeignKey(Supplier, on_delete=models.DO_NOTHING) > > > def __str__(self): > > return self.supplier > > > class Meta: > > ordering = ["label"] > > > def __str__(self): > > return self.label > > > # =================================# > > When I add the line supplier = models.ForeignKey(Supplier, > on_delete=models.DO_NOTHING) > > I get this error: > > > File "/Users/frankd/django_projects/Insectarium/src/shipment/models.py", > line 4, in <module> > > from supplier.models import Supplier > > File > "/Users/frankd/django_projects/Insectarium/src/supplier/models.py", line 3, > in <module> > > from shipment.models import Shipment > > ImportError: cannot import name 'Shipment' from partially initialized > module 'shipment.models' (most likely due to a circular import) > (/Users/frankd/django_ > > > > specie.models: > > -------------- > > from django.db import models > > from django.utils import timezone > > from ckeditor.fields import RichTextField > > > from shipment.models import Shipment > > > # Create your models here. > > > > class Specie(models.Model): > > scientific_name = models.CharField(max_length=50) > > common_name = models.CharField(max_length=50, blank=True, null=True) > > description = RichTextField(blank=True, null=True) > > image = models.ImageField( > > upload_to="specie/images/species", default="no_picture.png" > > ) > > shipment = models.ManyToManyField(Shipment) > > created = models.DateField(default=timezone.now) > > > def __str__(self): > > return self.scientific_name > > > class Meta: > > ordering = [ > > "scientific_name", > > ] > > > def __str__(self): > > return self.scientific_name > > > # ====================== # > > when I add the line shipment = models.ManyToManyField(Shipment) > > I get this error. > > > File "<frozen importlib._bootstrap>", line 241, in > _call_with_frames_removed > > File > "/Users/frankd/django_projects/Insectarium/src/shipment/models.py", line 3, > in <module> > > from specie.models import Specie > > File "/Users/frankd/django_projects/Insectarium/src/specie/models.py", > line 5, in <module> > > from shipment.models import Shipment > > ImportError: cannot import name 'Shipment' from partially initialized > module 'shipment.models' (most likely due to a circular import) > (/Users/frankd/django_ > > > > I think I tried this before but couldn't resolve these errors. Any > suggestions would be appreciated. > > > frank- > > > On Wed, Jan 26, 2022 at 10:53 AM frank dilorenzo <[email protected]> > wrote: > >> Thank you so much. Have a great day! >> >> frank- >> >> >> On Wed, Jan 26, 2022 at 6:51 AM bnmng <[email protected]> wrote: >> >>> I would start by defining Supplier in your models.py, then Shipment with >>> a ForeignKey reference to Supplier >>> >>> I'm assuming (forgive me if I'm wrong) that not only can a shipment have >>> many species, but a species can be in many shipments, so if that's the >>> case, the most obvious way is to go with ManyToMany for that relationship >>> >>> https://docs.djangoproject.com/en/4.0/topics/db/examples/many_to_many/ >>> >>> class Supplier(models.Model): >>> (etc..etc..) >>> >>> class Shipment(models.Model): >>> supplier = models.ForeignKey( >>> Supplier, >>> on_delete=models. (...etc.. etc...) >>> >>> class Species(models.Model): >>> shipment = models.ManyToManyField( >>> Shipment, >>> (etc..) >>> On Monday, January 24, 2022 at 8:59:10 AM UTC-5 [email protected] >>> wrote: >>> >>>> I have tried several different ways but I cannot seem to get this >>>> right. What I have is a list >>>> of suppliers. Each supplier can have many shipments and each shipment >>>> can have many species. Seems simple enough but apparently I must be more >>>> simple. >>>> >>>> I need a suggestion of how to relate these table. >>>> >>>> a supplier can have many shipment. A shipment can have many species. >>>> Any help would be appreciated. Thanks. >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Django users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/django-users/bc667e81-ce32-4df5-8f88-47dff3d852c8n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/django-users/bc667e81-ce32-4df5-8f88-47dff3d852c8n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/8f41caba-62f3-45e8-b4d6-e9584f9e8068n%40googlegroups.com.
