ojuso-map/apps/map/migrations/0069_remove_null_from_text_fields.py

# -*- coding: utf-8 -*-
# Generated by Django 1.11.15 on 2018-09-22 17:43
from __future__ import unicode_literals

from django.db import migrations, models
import multiselectfield.db.fields

from apps.map.models import CaseStudy

string_fields = [
    'additional_technical_details',
    'associated_infrastructure',
    'biomass_detail',
    'community_voices',
    'contractor_or_supplier_of_technology',
    'direct_comms',
    'entry_name',
    'full_description',
    'generation_equipment_supplier',
    'generation_technology',
    'generation_technology_other',
    'identified_partnerships',
    'isolated_or_widespread',
    'key_actors_involved',
    'land_ownership',
    'land_ownership_details',
    'media_coverage_independent',
    'media_coverage_mainstream',
    'minerals_or_commodities',
    'minerals_or_commodities_other',
    'name_of_territory_or_area',
    'negative_case_reasons',
    'negative_case_reasons_other',
    'negative_socioenvironmental_impacts',
    'obstacles_and_hindrances',
    'positive_case_type',
    'potential_partnerships',
    'power_technology',
    'power_technology_other',
    'project_status',
    'project_status_detail',
    'projected_production_of_commodities',
    'sector_of_economy',
    'size_of_concessions',
    'social_media_links',
    'socioeconomic_benefits',
    'type_of_ecosystem',
    'type_of_extraction',
    'use_in_energy_economy',
    'use_in_energy_economy_other',
    'video_caption',
    'video_credit',
    'when_did_organising_start',
    'who_has_been_involved',
]


def remove_nulls(apps, schema_editor):
    # We can't import the Person model directly as it may be a newer
    # version than this migration expects. We use the historical version.
    study = apps.get_model('map', 'CaseStudy')
    for study in CaseStudy.objects.all():
        for field in string_fields:
            if getattr(study, field) == None:
                setattr(study, field, '')

        study.save()


class Migration(migrations.Migration):

    dependencies = [
        ('map', '0068_casestudydraft_created'),
    ]

    operations = [
        migrations.RunPython(remove_nulls),
    ]