One way to do it is to run all operations, don't call "save" and verify
"manually" if objects are correct.
I don't know about other methods, but if someone else does it would be
great.
On Sun, Mar 22, 2015 at 6:29 AM, Murthy Sandeep <sand...@sandeepmurthy.is>
wrote:
> Hi
>
> I have created an data migration script for populating one of
> app db tables with data from a JSON file. First I ran
>
> python manage.py makemigrations --empty TPP_App
>
>
>
> (‘TPP_App’ is the name of my app) and then I added a custom
> method called populate_db which will use bulk_create to add
> multiple entries to the table, and then do a save() to write the
> changes to the db. At the moment the custom method is empty
> because I am still working on it, but the script looks like this right
> now
>
> # -*- coding: utf-8 -*-
> from __future__ import unicode_literals
>
> from django.db import models, migrations
>
> def populate_db( apps, schema_editor ):
> print ‘Populating db from JSON file...'
>
> class Migration(migrations.Migration):
>
> dependencies = [
> ('TPP_App', '0003_auto_20150224_2024'),
> ]
>
> operations = [
> migrations.RunPython( populate_db ),
> ]
>
> How do I test this script to make sure the custom method works
> as expected, before I run it fully? Can I call this from the interpreter
> and test it with the db API?
>
> At the moment if I do
>
> python manage.py migrate
>
> it reports there are no migrations to apply.
>
> Sandeep
>
>
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