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Adding additional migrations to fix potential data corruption when renaming the foreign key
This commit is contained in:
Corey Oordt
parent
43f7ff768d
commit
3ee569a060
2 changed files with 117 additions and 0 deletions
58
categories/migrations/0011_move_category_fks.py
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58
categories/migrations/0011_move_category_fks.py
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# encoding: utf-8
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import datetime
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from south.db import db
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from south.v2 import DataMigration
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from django.db import models
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class Migration(DataMigration):
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def forwards(self, orm):
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"Write your forwards methods here."
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orm.CategoryRelation.objects.update(category=models.F('story'))
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def backwards(self, orm):
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"Write your backwards methods here."
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orm.CategoryRelation.objects.update(story=models.F('category'))
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models = {
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'categories.category': {
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'Meta': {'ordering': "('tree_id', 'lft')", 'unique_together': "(('parent', 'name'),)", 'object_name': 'Category'},
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'active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
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'alternate_title': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '100', 'blank': 'True'}),
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'alternate_url': ('django.db.models.fields.CharField', [], {'max_length': '200', 'blank': 'True'}),
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'description': ('django.db.models.fields.TextField', [], {'null': 'True', 'blank': 'True'}),
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'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
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'level': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'}),
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'lft': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'}),
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'meta_extra': ('django.db.models.fields.TextField', [], {'default': "''", 'blank': 'True'}),
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'meta_keywords': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '255', 'blank': 'True'}),
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'name': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
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'order': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
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'parent': ('mptt.fields.TreeForeignKey', [], {'blank': 'True', 'related_name': "'children'", 'null': 'True', 'to': "orm['categories.Category']"}),
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'rght': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'}),
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'slug': ('django.db.models.fields.SlugField', [], {'max_length': '50', 'db_index': 'True'}),
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'thumbnail': ('django.db.models.fields.files.FileField', [], {'max_length': '100', 'null': 'True', 'blank': 'True'}),
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'thumbnail_height': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
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'thumbnail_width': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
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'tree_id': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'})
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},
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'categories.categoryrelation': {
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'Meta': {'object_name': 'CategoryRelation'},
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'category': ('django.db.models.fields.related.ForeignKey', [], {'blank': 'True', 'related_name': "'new_cats'", 'null': 'True', 'to': "orm['categories.Category']"}),
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'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
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'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
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'object_id': ('django.db.models.fields.PositiveIntegerField', [], {}),
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'relation_type': ('django.db.models.fields.CharField', [], {'max_length': "'200'", 'null': 'True', 'blank': 'True'}),
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'story': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['categories.Category']"})
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},
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'contenttypes.contenttype': {
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'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
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'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
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'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
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'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
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'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
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}
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}
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complete_apps = ['categories']
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59
categories/migrations/0012_remove_story_field.py
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59
categories/migrations/0012_remove_story_field.py
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# encoding: utf-8
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import datetime
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from south.db import db
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from south.v2 import SchemaMigration
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from django.db import models
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class Migration(SchemaMigration):
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def forwards(self, orm):
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# Deleting field 'CategoryRelation.story'
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db.delete_column('categories_categoryrelation', 'story_id')
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def backwards(self, orm):
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# Adding field 'CategoryRelation.story'
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db.add_column('categories_categoryrelation', 'story', self.gf('django.db.models.fields.related.ForeignKey')(null=True, to=orm['categories.Category']))
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models = {
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'categories.category': {
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'Meta': {'ordering': "('tree_id', 'lft')", 'unique_together': "(('parent', 'name'),)", 'object_name': 'Category'},
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'active': ('django.db.models.fields.BooleanField', [], {'default': 'True'}),
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'alternate_title': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '100', 'blank': 'True'}),
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'alternate_url': ('django.db.models.fields.CharField', [], {'max_length': '200', 'blank': 'True'}),
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'description': ('django.db.models.fields.TextField', [], {'null': 'True', 'blank': 'True'}),
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'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
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'level': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'}),
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'lft': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'}),
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'meta_extra': ('django.db.models.fields.TextField', [], {'default': "''", 'blank': 'True'}),
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'meta_keywords': ('django.db.models.fields.CharField', [], {'default': "''", 'max_length': '255', 'blank': 'True'}),
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'name': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
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'order': ('django.db.models.fields.IntegerField', [], {'default': '0'}),
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'parent': ('mptt.fields.TreeForeignKey', [], {'blank': 'True', 'related_name': "'children'", 'null': 'True', 'to': "orm['categories.Category']"}),
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'rght': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'}),
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'slug': ('django.db.models.fields.SlugField', [], {'max_length': '50', 'db_index': 'True'}),
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'thumbnail': ('django.db.models.fields.files.FileField', [], {'max_length': '100', 'null': 'True', 'blank': 'True'}),
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'thumbnail_height': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
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'thumbnail_width': ('django.db.models.fields.IntegerField', [], {'null': 'True', 'blank': 'True'}),
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'tree_id': ('django.db.models.fields.PositiveIntegerField', [], {'db_index': 'True'})
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},
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'categories.categoryrelation': {
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'Meta': {'object_name': 'CategoryRelation'},
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'category': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['categories.Category']"}),
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'content_type': ('django.db.models.fields.related.ForeignKey', [], {'to': "orm['contenttypes.ContentType']"}),
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'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
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'object_id': ('django.db.models.fields.PositiveIntegerField', [], {}),
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'relation_type': ('django.db.models.fields.CharField', [], {'max_length': "'200'", 'null': 'True', 'blank': 'True'})
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},
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'contenttypes.contenttype': {
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'Meta': {'ordering': "('name',)", 'unique_together': "(('app_label', 'model'),)", 'object_name': 'ContentType', 'db_table': "'django_content_type'"},
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'app_label': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
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'id': ('django.db.models.fields.AutoField', [], {'primary_key': 'True'}),
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'model': ('django.db.models.fields.CharField', [], {'max_length': '100'}),
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'name': ('django.db.models.fields.CharField', [], {'max_length': '100'})
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}
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}
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complete_apps = ['categories']
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