Hello all,
So, I setup django in a virtualenv on my Ubuntu environment. I
was reading the docs and thought I had things right
for creating the 3 models I wanted with this application. I am using
Postgresql. I have the Postgresql driver for Python/Django installed
in the virtualenv. It is a "Contacts" app.
First question: Do django model fields default to required unless you use
blank=True, null=True?
Many of my fields, I want to have optional.
I have a class called Contact, a class called Organization and a class
called Connection.
I wanted to use the Organization as a foreign key on the Contact model. I
could have more than one contact from
an Organization. The Connection model is inspired by the Google Plus idea
of "Circles" - e.g. friends,
family, following, etc. So, this would be a many-to-many relationship.
My problems are (1) I cannot create connections without specifying a
contact.
(2) If I was adding a contact using the admin interface, how do I allow no
value for that foreign field
or allow for some kind of ajax type of text completion? If a person is
family or friend, I may not need
to list an Organization for them.
(3) I would like to support multiple connection types - e.g. following,
employer, etc.
So, here is my apps models.py file:
>>>>
from django.db import models
class Contact(models.Model):
name = models.CharField(max_length=40)
Organization = models.CharField(max_length=50)
street_line1 = models.CharField("Street Line 1", max_length=50)
street_line2 = models.CharField("Street Line 2", max_length=50)
city = models.CharField(max_length=40)
state = models.CharField(max_length=40)
zipcode = models.CharField(max_length=20, blank=True, null=True)
phone1 = models.CharField(max_length=20)
phone2 = models.CharField(max_length=20)
email = models.EmailField(max_length=60)
class Organization(models.Model):
name = models.CharField(max_length=60)
street_line1 = models.CharField("Street Line 1", max_length=50)
street_line2 = models.CharField("Street Line 2", max_length=50)
city = models.CharField(max_length=40)
state = models.CharField(max_length=40)
zipcode = models.CharField(max_length=20, blank=True, null=True,)
phone = models.CharField(max_length=20)
email = models.EmailField(max_length=60)
website = models.URLField(max_length=90)
contact_name = models.ForeignKey(Contact, on_delete=models.CASCADE)
class Connection(models.Model):
type = models.CharField(max_length=60)
contact_name = models.ManyToManyField(Contact)
>>>
Thanks in advance for any suggestions,
Bruce
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