mamweb/deploy_v2/pre_migration.py

#!/usr/bin/env python3

import os
import sys

import django

#### Inicializace Djanga
sys.path.append(os.path.dirname(os.path.realpath(__file__))+'/..')
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'mamweb.settings')
django.setup()

## Pozor, nejde pouzit ORM, protoze kod je na jine verzi nez databaze a nejde namigrovat.
from django.db import connection


def smaz_zle_clanky():
	# Tyhle clanky vubec nejsou clanky, bude potreba je udelat cele jinak a spravne.
	#m.Problem.objects.filter(id__in=[1981, 1970, 2222]).delete()
	## with connection.cursor() as cursor:
	## 	# Nejdriv musime smazat reseni:
	## 	cursor.execute('DELETE FROM seminar_reseni WHERE problem_id IN (1981, 1970, 2222);')
	## 	# Nakonec i ty clanky samotne
	## 	cursor.execute('DELETE FROM seminar_problemy WHERE id IN (1981, 1970, 2222);')

        # Update: stejně je v DB bordel, tak z nich prostě jen udělám témata a všechno zhruba přežije…
	with connection.cursor() as cursor:
		cursor.execute("UPDATE seminar_problemy SET typ = 'tema' WHERE id IN (1981, 1970, 2222);")

def smaz_divne_uzivatele():
	# U techto uzivatelu neexistuje Organizator s nimi spojeny
	# Takze pak delaji akorat neporadek
	with connection.cursor() as cursor:
		# Jeste je potreba zrusit vazby
		cursor.execute('UPDATE django_comments SET user_id = NULL WHERE user_id = 34;')
		cursor.execute('UPDATE seminar_problemy SET autor_id = NULL WHERE autor_id = 34;')
		cursor.execute('DELETE FROM django_admin_log WHERE user_id = 34;')
		cursor.execute('DELETE FROM auth_user_groups WHERE user_id = 34;')
		cursor.execute('DELETE FROM auth_user WHERE id IN (34, 40, 30, 50, 54, 58, 43);')

smaz_zle_clanky()
smaz_divne_uzivatele()