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.
>>>
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>>
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