django-migrations

I'm creating a data migration for app Notification , in here i'm using the reference of model, Manager , from app accounts Manager = apps.get_model("accounts", "Manager") It throws error : self.code(from_state.render(), schema_editor) File "/home/notifications/migrations/0004_auto_20150720_0127.py", line 12, in set_notification_setttings Manager = apps.get_model("accounts", "Manager") File "/home/local/lib/python2.7/site-packages/django/apps/registry.py", line 202, in get_model return self.get_app_config(app_label).get_model(model_name.lower()) File "/home/local/lib/python2.7/site-packages

I have been reading about django migrations at https://docs.djangoproject.com/en/1.7/topics/migrations/ . I also reviewed the commits on the 1.7.x branch in github where I understand that this problem may have been solved. Unfortunately I still get the error when running my migrations. The --fake option gives the same error. I have the following migrations: 'people' app migration: user@host$ /manage.py makemigrations people Migrations for 'people': 0001_initial.py: - Create model Person - Create model Committee - Create model DepartmentGroup - Add field department_group to person - Create

I have read a lot of other posts here on stackoverflow and google but I could not find a solution. It all started when I changed the model from a CharField to a ForeignKey. The error I recieve is: Operations to perform: Synchronize unmigrated apps: gis, staticfiles, crispy_forms, geoposition, messages Apply all migrations: venues, images, amenities, cities_light, registration, auth, admin, sites, sessions, contenttypes, easy_thumbnails, newsletter Synchronizing apps without migrations: Creating tables... Running deferred SQL... Installing custom SQL... Running migrations: Rendering model

I needed to add more fields to Django's User model, so I created a custom model class (named Accounts in an app named accounts ) that extends Django's AbstractUser class. After that, I updated my settings.py file, defining the AUTH_USER_MODEL property : AUTH_USER_MODEL = 'accounts.Accounts' I then created a migration file for the custom model using the python manage.py makemigrations command. After that, I ran the python manage.py migrate command and I got this error message: ValueError: The field admin.LogEntry.user was declared with a lazy reference to 'accounts.accounts', but app 'accounts'

I just created a proxy model and was surprised that manage.py makemigrations creates a new migration file with a migrations.CreateModel operation. A proxy model does not create a new database table, it's just a different python interface to the same dataset and indeed manage.py sqlmigrate my_app_label 0042 returns nothing. I thought that it might be used to create the proxy model ContentType but those are created on demand if they don't exist. Is it used to trigger the creation of the proxy model permissions? There's a 6 year old open bug on proxy model permissions so I'm not really sure how

I want to alter a foreign key in one of my models that can currently have NULL values to not be nullable. I removed the null=True from my field and ran makemigrations Because I'm an altering a table that already has rows which contain NULL values in that field I am asked to provide a one-off value right away or edit the migration file and add a RunPython operation. My RunPython operation is listed BEFORE the AlterField operation and does the required update for this field so it doesn't contain NULL values (only rows who already contain a NULL value). But, the migration still fails with this

This is my models.py: class Notification(models.Model): user = models.ForeignKey(User) createdAt = models.DateTimeField(auto_now_add=True, blank=True) read = models.BooleanField(default=False, blank=True) class Meta: abstract = True class RegularNotification(Notification): message = models.CharField(max_length=150) link = models.CharField(max_length=100) class FNotification(Notification): # same as Notification pass When I do python manage.py makemigrations , this is what it says: Migrations for 'CApp': 0019_auto_20151202_2228.py: - Create model RegularNotification - Create model FNotification

I am currently involved in a project where I am using Django 1.7 development version.I want to propogate changes that I make in my models (adding a field, deleting a model, etc.) into the database schema using "makemigrations" and "migrate" commmands.I added a "age" field to one of the models in my application. country = models.CharField(max_length=50, blank=True) address = models.CharField(max_length=100, blank=True) postal_code = models.IntegerField(max_length=50, blank=True) city = models.CharField(max_length=50, blank=True) phone_no = models.CharField(max_length=25, blank=True) skype_name