From 7a911b3a3d6d3cdd6384e0064f8c268cb15f19eb Mon Sep 17 00:00:00 2001
From: "Pavel \"LEdoian\" Turinsky" <ledoian@matfyz.cz>
Date: Wed, 14 Aug 2019 14:49:23 +0200
Subject: [PATCH] =?UTF-8?q?Nukedb:=20p=C5=99=C3=ADkaz,=20kter=C3=BD=20v?=
 =?UTF-8?q?=C5=A1echny=20aplikace=20odmigruje?=
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Uvede tedy databázi do naprosto čistého stavu, bez tabulek ap.

Není závislá na databázi (narozdíl od 'rm db-local.sqlite3') a nepotřebuje
práva vytvářet nové databáze (narozdíl od 'DROP DATABASE' nebo
'./manage.py reset_db' nad Postgresem)

Jinak je to prostě for-cyklus přes INSTALLED_APPS.
---
 seminar/management/commands/nukedb.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 seminar/management/commands/nukedb.py

diff --git a/seminar/management/commands/nukedb.py b/seminar/management/commands/nukedb.py
new file mode 100644
index 00000000..f253841a
--- /dev/null
+++ b/seminar/management/commands/nukedb.py
@@ -0,0 +1,20 @@
+from mamweb.settings import INSTALLED_APPS
+from django.core.management.base import BaseCommand, CommandError
+from django.core.management import call_command
+
+class Command(BaseCommand):
+	help = "Odmigruje všechny moduly (i.e. smaže všechny tabulky, ale databázi nechá)"
+
+	def add_arguments(self, parser):
+		# TODO: --force (makat a neblábolit)
+		pass
+	def handle(self, *args, **options):
+		# TODO: zeptat se
+		for app in INSTALLED_APPS:
+			app = app.split('.')[-1]
+			try:
+				call_command('migrate', app, 'zero')
+			except CommandError:
+				# app nemá migrace (aspoň typicky)
+				pass
+		call_command('showmigrations')