39 lines
1007 B
Python
39 lines
1007 B
Python
# -*- coding: utf-8 -*-
|
|
from __future__ import unicode_literals
|
|
|
|
from django.db import migrations
|
|
from django.utils.text import slugify
|
|
|
|
|
|
def generate_slug(instance):
|
|
base_slug = slugify(instance.label)[:45]
|
|
slug = base_slug
|
|
i = 1
|
|
while True:
|
|
queryset = instance._meta.model.objects.filter(slug=slug).exclude(pk=instance.pk)
|
|
if not queryset.exists():
|
|
break
|
|
slug = '%s-%s' % (base_slug, i)
|
|
i += 1
|
|
return slug
|
|
|
|
|
|
def set_slug(apps, schema_editor):
|
|
MapLayer = apps.get_model('maps', 'MapLayer')
|
|
for layer in MapLayer.objects.all().order_by('-pk'):
|
|
if not MapLayer.objects.filter(slug=layer.slug).exclude(pk=layer.pk).exists():
|
|
continue
|
|
layer.slug = generate_slug(layer)
|
|
layer.save(update_fields=['slug'])
|
|
|
|
|
|
class Migration(migrations.Migration):
|
|
|
|
dependencies = [
|
|
('maps', '0010_map_layer_opacity'),
|
|
]
|
|
|
|
operations = [
|
|
migrations.RunPython(set_slug, lambda x, y: None),
|
|
]
|