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delete sequence data directly

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j 2013-03-06 16:29:57 +00:00
parent f48f62b6a0
commit edd889348c
1 changed files with 6 additions and 3 deletions
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9
pandora/sequence/migrations/0002_optimize1.py
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@ -2,12 +2,17 @@
import datetime import datetime
from south.db import db from south.db import db
from south.v2 import SchemaMigration from south.v2 import SchemaMigration
from django.db import models from django.db import models, connection, transaction
class Migration(SchemaMigration): class Migration(SchemaMigration):
def forwards(self, orm): def forwards(self, orm):
table_name = orm['sequence.Sequence']._meta.db_table
cursor = connection.cursor()
sql = 'DELETE FROM "%s" WHERE 1=1' % table_name
cursor.execute(sql)
transaction.commit_unless_managed()
# Removing unique constraint on 'Sequence', fields ['item', 'end', 'mode', 'start'] # Removing unique constraint on 'Sequence', fields ['item', 'end', 'mode', 'start']
db.delete_unique('sequence_sequence', ['item_id', 'end', 'mode', 'start']) db.delete_unique('sequence_sequence', ['item_id', 'end', 'mode', 'start'])
@ -31,8 +36,6 @@ class Migration(SchemaMigration):
# Adding unique constraint on 'Sequence', fields ['sort', 'start', 'end', 'mode'] # Adding unique constraint on 'Sequence', fields ['sort', 'start', 'end', 'mode']
db.create_unique('sequence_sequence', ['sort_id', 'start', 'end', 'mode']) db.create_unique('sequence_sequence', ['sort_id', 'start', 'end', 'mode'])
orm['sequence.Sequence'].objects.all().delete()
def backwards(self, orm): def backwards(self, orm):
# Removing unique constraint on 'Sequence', fields ['sort', 'start', 'end', 'mode'] # Removing unique constraint on 'Sequence', fields ['sort', 'start', 'end', 'mode']
db.delete_unique('sequence_sequence', ['sort_id', 'start', 'end', 'mode']) db.delete_unique('sequence_sequence', ['sort_id', 'start', 'end', 'mode'])