add-fpr-rule: generate migrations

[mistydemeo]

This replaces raw SQL output with migrations.

Here's a sample session. Input:

$ am add-fpr-rule idcommand
description:
test tool
config:
puid
replaces_id:
a8e45bc1-eb35-4545-885c-dd552f1fde9a
script:
rm -rf
script_type:
bashScript
tool_id:
8f04f36d-8d43-43c2-92f9-da64c5530106

Output:

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.db import models, migrations
import main.models

def forwards_fn(apps, schema_editor):
    db_alias = schema_editor.connection.alias
    IDCommand = apps.get_model("fpr", "IDCommand")
    IDCommand.objects.filter(uuid=u'a8e45bc1-eb35-4545-885c-dd552f1fde9a').update(**{'enabled': False})
    IDCommand = apps.get_model("fpr", "IDCommand")
    IDCommand.objects.using(db_alias).create(**{'tool_id': '8f04f36d-8d43-43c2-92f9-da64c5530106', 'uuid': u'5c28dda3-80f2-49a4-a5d0-e7bb096cef13', 'script': 'rm -rf', 'lastmodified': '2016-02-25T00:48:19.477494+00:00', 'enabled': True, 'replaces_id': 'a8e45bc1-eb35-4545-885c-dd552f1fde9a', 'script_type': 'bashScript', 'config': 'puid', 'id': 9L, 'description': 'test tool'})

def reverse_fn(apps, schema_editor):
    db_alias = schema_editor.connection.alias
    IDCommand = apps.get_model("fpr", "IDCommand")
    IDCommand.objects.filter(uuid=u'a8e45bc1-eb35-4545-885c-dd552f1fde9a').update(**{'enabled': True})
    IDCommand = apps.get_model("fpr", "IDCommand")
    IDCommand.objects.filter(**{'tool_id': '8f04f36d-8d43-43c2-92f9-da64c5530106', 'uuid': u'5c28dda3-80f2-49a4-a5d0-e7bb096cef13', 'script': 'rm -rf', 'lastmodified': '2016-02-25T00:48:19.477494+00:00', 'enabled': True, 'replaces_id': 'a8e45bc1-eb35-4545-885c-dd552f1fde9a', 'script_type': 'bashScript', 'config': 'puid', 'id': 9L, 'description': 'test tool'}).delete()

class Migration(migrations.Migration):
    dependencies = []
    operations = [
        migrations.RunPython(forwards_fn, reverse_fn),
    ]

[mistydemeo]

Need to figure out how to handle the datetime() stuff.