Question

I have 4 models in my models.py. I am using multiple databases. I want to write only model into the another database I have added. I have default Router from Django documentation:

   def db_for_write(self, model, **hints):
        """
        Attempts to write fileupload models go to galaxy.
        """
        if model._meta.app_label == 'fileupload': #fileupload=app_name
            return 'galaxy' #database=galaxy
        return None

My model name is GalaxyUser. How can I modify this function so that when I do ./manage.py syncdb --database=galaxy it only writes the model GalaxyUser to the database.

Answer 1

You’ll want to define the allow_syncdb method

class GalaxyRouter(object):
    def allow_syncdb(self, db, model):
        if db == 'galaxy':
            return model._meta.app_label == 'fileupload'
        if model._meta.app_label == 'fileupload':
            return db == 'galaxy'
        return None

Make sure the router is in a different file to the models (like fileupload/routers.py) and that it is installed in your settings.py file like so: DATABASE_ROUTERS = ['fileupload.routers.GalaxyRouter']