pandora/pandora/item/management/commands/sync_itemsort.py

118 lines
5.3 KiB
Python

# -*- coding: utf-8 -*-
from __future__ import print_function
from django.core.management.base import BaseCommand
from django.db import connection, transaction
from django.db.models import fields
from django.conf import settings
settings.RELOAD_CONFIG = False
import app.monkey_patch
from ... import models
import clip.models
class Command(BaseCommand):
"""
sync item sort table with current settings in site.json
"""
help = 'alter table to match itemKeys in site.json.'
args = ''
def add_arguments(self, parser):
parser.add_argument('--debug', action='store_true', dest='debug',
default=False, help='print sql commans')
def handle(self, **options):
table_name = models.ItemSort._meta.db_table
cursor = connection.cursor()
db_rows = connection.introspection.get_table_description(cursor, table_name)
db_fields = dict([(row[0], row) for row in db_rows])
db_types = dict([(row[0],
connection.introspection.data_types_reverse[row[1]]) for row in db_rows])
model_fields = ['item_id'] + [f.name for f in models.ItemSort._meta.fields]
rebuild = False
changes = []
for name in db_types:
if name not in model_fields:
sql = 'ALTER TABLE "%s" DROP COLUMN "%s"' % (table_name, name)
changes.append(sql)
for f in models.ItemSort._meta.fields:
if not f.primary_key:
name = f.name
col_type = f.db_type(connection)
if name not in db_fields:
sql = 'ALTER TABLE "%s" ADD COLUMN "%s" %s' % (table_name, name, col_type)
changes.append(sql)
sql = 'CREATE INDEX "%s_%s_idx" ON "%s" ("%s")' % (table_name, name,
table_name, name)
changes.append(sql)
rebuild = True
elif f.__class__.__name__ != db_types[name]:
sql = 'ALTER TABLE "%s" DROP COLUMN "%s"' % (table_name, name)
changes.append(sql)
sql = 'ALTER TABLE "%s" ADD COLUMN "%s" %s' % (table_name, name, col_type)
changes.append(sql)
sql = 'CREATE INDEX "%s_%s_idx" ON "%s" ("%s")' % (table_name, name,
table_name, name)
changes.append(sql)
rebuild = True
elif db_types[name] == 'CharField' and db_fields[name][3] != f.max_length:
sql = 'ALTER TABLE "%s" ALTER COLUMN "%s" TYPE %s' % (table_name, name,
col_type)
changes.append(sql)
sql = 'ALTER TABLE "%s" ALTER COLUMN "%s" %s NOT NULL' % (table_name, name,
f.null and "DROP" or "SET")
changes.append(sql)
rebuild = True
#also update clip index
table_name = clip.models.Clip._meta.db_table
db_rows = connection.introspection.get_table_description(cursor, table_name)
db_fields = dict([(row[0], row) for row in db_rows])
db_types = dict([(row[0],
connection.introspection.data_types_reverse[row[1]]) for row in db_rows])
model_fields = ['item_id', 'sort_id'] + [f.name for f in clip.models.Clip._meta.fields]
for name in db_types:
if name not in model_fields:
sql = 'ALTER TABLE "%s" DROP COLUMN "%s"' % (table_name, name)
changes.append(sql)
for f in clip.models.Clip._meta.fields:
if not f.primary_key and not isinstance(f, fields.related.ForeignKey):
name = f.name
col_type = f.db_type(connection)
if name not in db_fields:
sql = 'ALTER TABLE "%s" ADD COLUMN "%s" %s' % (table_name, name, col_type)
changes.append(sql)
sql = 'UPDATE "%s" SET "%s"=FALSE WHERE "%s" IS NULL' % (
table_name, name, name
)
changes.append(sql)
sql = 'CREATE INDEX "%s_%s_idx" ON "%s" ("%s")' % (table_name, name,
table_name, name)
changes.append(sql)
sql = 'COMMIT'
changes.append(sql)
sql = 'ALTER TABLE "%s" ALTER COLUMN "%s" SET NOT NULL' % (table_name, name)
changes.append(sql)
sql = 'BEGIN'
changes.append(sql)
if changes:
print("Updating database schema...")
for sql in changes:
if options['debug']:
print(sql)
cursor.execute(sql)
transaction.commit()
if rebuild:
print("Updating sort values...")
ids = [i['id'] for i in models.Item.objects.all().values('id')]
for id in ids:
i = models.Item.objects.get(pk=id)
if options['debug']:
print(i)
i.update_sort()