From d7665959652171b93db5e084c6738e8e1773e7f0 Mon Sep 17 00:00:00 2001 From: Dan McGee Date: Thu, 7 Apr 2011 16:14:48 -0500 Subject: Add some migrations to convert database to UTC time This follows the earlier commit where we make sure any value going to or being pulled from the database is UTC. Signed-off-by: Dan McGee --- news/migrations/0009_utc_datetimes.py | 85 +++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 news/migrations/0009_utc_datetimes.py (limited to 'news') diff --git a/news/migrations/0009_utc_datetimes.py b/news/migrations/0009_utc_datetimes.py new file mode 100644 index 0000000..6cddf78 --- /dev/null +++ b/news/migrations/0009_utc_datetimes.py @@ -0,0 +1,85 @@ +# encoding: utf-8 +import datetime +from south.db import db +from south.v2 import DataMigration +from django.db import models +from django.utils.tzinfo import LocalTimezone + +def new_date(old_date, reverse=False): + if old_date is None: + return None + tz = LocalTimezone(old_date) + offset = tz.utcoffset(old_date) + if reverse: + offset = -offset + return old_date - offset + +class Migration(DataMigration): + + def forwards(self, orm): + all_news = orm.News.objects.all().defer('content') + for news in all_news: + # prevents full object updates + orm.News.objects.filter(pk=news.pk).update( + postdate=new_date(news.postdate), + last_modified=new_date(news.last_modified)) + + def backwards(self, orm): + all_news = orm.News.objects.all().defer('content') + for news in all_news: + # prevents full object updates + orm.News.objects.filter(pk=news.pk).update( + postdate=new_date(news.postdate, True), + last_modified=new_date(news.last_modified, True)) + + models = { + 'auth.group': { + 'Meta': {'object_name': 'Group'}, + 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}), + 'name': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '80'}), + 'permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}) + }, + 'auth.permission': { + 'Meta': {'ordering': "('content_type__app_label', 'content_type__model', 'codename')", 'unique_together': "(('content_type', 'codename'),)", 'object_name': 'Permission'}, + 'codename': ('django.db.models.fields.CharField', [], {'max_length': '100'}), + 'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}), + 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}), + 'name': ('django.db.models.fields.CharField', [], {'max_length': '50'}) + }, + 'auth.user': { + 'Meta': {'object_name': 'User'}, + 'date_joined': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}), + 'email': ('django.db.models.fields.EmailField', [], {'max_length': '75', 'blank': 'True'}), + 'first_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}), + 'groups': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Group']", 'symmetrical': 'False', 'blank': 'True'}), + 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}), + 'is_active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}), + 'is_staff': ('django.db.models.fields.BooleanField', [], {'default': 'False'}), + 'is_superuser': ('django.db.models.fields.BooleanField', [], {'default': 'False'}), + 'last_login': ('django.db.models.fields.DateTimeField', [], {'default': 'datetime.datetime.now'}), + 'last_name': ('django.db.models.fields.CharField', [], {'max_length': '30', 'blank': 'True'}), + 'password': ('django.db.models.fields.CharField', [], {'max_length': '128'}), + 'user_permissions': ('django.db.models.fields.related.ManyToManyField', [], {'to': "orm['auth.Permission']", 'symmetrical': 'False', 'blank': 'True'}), + 'username': ('django.db.models.fields.CharField', [], {'unique': 'True', 'max_length': '30'}) + }, + 'contenttypes.contenttype': { + 'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"}, + 'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}), + 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}), + 'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}), + 'name': ('django.db.models.fields.CharField', [], {'max_length': '100'}) + }, + 'news.news': { + 'Meta': {'ordering': "['-postdate']", 'object_name': 'News', 'db_table': "'news'"}, + 'author': ('django.db.models.fields.related.ForeignKey', [], {'related_name': "'news_author'", 'to': "orm['auth.User']"}), + 'content': ('django.db.models.fields.TextField', [], {}), + 'guid': ('django.db.models.fields.CharField', [], {'max_length': '255'}), + 'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}), + 'last_modified': ('django.db.models.fields.DateTimeField', [], {'db_index': 'True'}), + 'postdate': ('django.db.models.fields.DateTimeField', [], {'db_index': 'True'}), + 'slug': ('django.db.models.fields.SlugField', [], {'unique': 'True', 'max_length': '255', 'db_index': 'True'}), + 'title': ('django.db.models.fields.CharField', [], {'max_length': '255'}) + } + } + + complete_apps = ['news'] -- cgit v1.2.3-24-g4f1b