django_issue.md

# in intake.models
class FormSubmission(models.Model):
	organizations = models.ManyToManyField('user_accounts.Organization')

# in user_accounts.models
class Organization(models.Model):
	# some attributes

We now added an explicit through model

# in intake.models
class Application(models.Model):
	organization = models.ForeignKey('user_accounts.Organization')
	form_submission = models.ForeignKey(
		'intake.Organization', db_column='formsubmission_id')

	class Meta:
		db_table = 'intake_formsubmission_organizations'
		auto_created = True


class FormSubmission(models.Model):
	organizations = models.ManyToManyField(
		'user_accounts.Organization',
		through='intake.Application')

Everything up to this point is fine. Tests work. We can create models and access relational queries.

We did not make a new migration because the table already existed and no changes to the database were needed.

Then we added a ForeignKey that points to the through model

# in intake.models
class StatusUpdate(models.Model):
	application = models.ForeignKey('intake.Application')

When we try to make migrations for this new StatusUpdate model, Django returns an error