72 lines
3.0 KiB
Python
72 lines
3.0 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import print_function
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from django.core.management.base import BaseCommand
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from django.db import connection, transaction
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from django.db.models import fields
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from django.conf import settings
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from . import models
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def update_tables(debug=False):
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table_name = models.Sort._meta.db_table
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cursor = connection.cursor()
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db_rows = connection.introspection.get_table_description(cursor, table_name)
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db_fields = dict([(row[0], row) for row in db_rows])
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db_types = dict([(row[0],
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connection.introspection.data_types_reverse[row[1]]) for row in db_rows])
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model_fields = ['document_id'] + [f.name for f in models.Sort._meta.fields]
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rebuild = False
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changes = []
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for name in db_types:
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if name not in model_fields:
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sql = 'ALTER TABLE "%s" DROP COLUMN "%s"' % (table_name, name)
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changes.append(sql)
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for f in models.Sort._meta.fields:
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if not f.primary_key:
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name = f.name
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col_type = f.db_type(connection)
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if name not in db_fields:
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sql = 'ALTER TABLE "%s" ADD COLUMN "%s" %s' % (table_name, name, col_type)
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changes.append(sql)
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sql = 'CREATE INDEX "%s_%s_idx" ON "%s" ("%s")' % (table_name, name,
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table_name, name)
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changes.append(sql)
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rebuild = True
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elif f.__class__.__name__ != db_types[name]:
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sql = 'ALTER TABLE "%s" DROP COLUMN "%s"' % (table_name, name)
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changes.append(sql)
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sql = 'ALTER TABLE "%s" ADD COLUMN "%s" %s' % (table_name, name, col_type)
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changes.append(sql)
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sql = 'CREATE INDEX "%s_%s_idx" ON "%s" ("%s")' % (table_name, name,
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table_name, name)
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changes.append(sql)
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rebuild = True
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elif db_types[name] == 'CharField' and db_fields[name][3] != f.max_length:
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sql = 'ALTER TABLE "%s" ALTER COLUMN "%s" TYPE %s' % (table_name, name,
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col_type)
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changes.append(sql)
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sql = 'ALTER TABLE "%s" ALTER COLUMN "%s" %s NOT NULL' % (table_name, name,
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f.null and "DROP" or "SET")
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changes.append(sql)
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rebuild = True
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if changes:
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print("Updating document sort schema...")
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for sql in changes:
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if debug:
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print(sql)
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cursor.execute(sql)
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transaction.commit()
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if rebuild:
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print("Updating document sort values...")
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ids = [i['id'] for i in models.Document.objects.all().values('id')]
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for id in ids:
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d = models.Document.objects.get(pk=id)
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if debug:
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print(d)
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d.update_sort()
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