如何在创建 Django model 时填充表？

Question

I have a list of cities (simple cvs file) and I want to populate the citeis table while creating the City model. Class description:

class City(models.Model):
    city = modeld.CharField('city_name', max_length=50)

    class Meta:
        berbuse_name =....
        ...........

    def __unicode__(self):
        return self.city

Now, what I am looking for is how to do it only once, while creating the model(DB table).

I'm trying to do it over here because it sound very logic to me (like building a sql script in MS-sql and other)

EDIT: Ok, I guess I am asking the wrong thing....maybe this: How do I create a python function that will take the cvs file and transform it to json (Again, in the model itself, while it is being build) and should I do it at all???

Can any one please help me with this?

Answer 1

We do something like this, usually.

import csv
from my_django_app.forms import CityForm
with open( "my file", "rb" ) as source:
    rdr = csv.DictReader( source )
    for row in rdr:
        form= CityForm( **row )
        if form.is_valid(): 
            form.save()
        else:
            print form.errors

This validates and loads the data.

After the data is loaded, you can use django-admin dumpdata to preserve a JSON fixture from the loaded model.

Answer 2

Providing initial data for models .