A Migration

seminar/migrations/0002_treenode_nazev.py

@@ -0,0 +1,104 @@
+# Generated by Django 2.2.5 on 2019-09-26 19:35
+
+from django.db import migrations, models
+
+def fix_RocnikNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'RocnikNode')
+	for obj in Objects.objects.all():
+		obj.nazev = str(obj.rocnik)+" (RocnikNode)"
+		obj.save()
+
+def fix_CisloNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'CisloNode')
+	for obj in Objects.objects.all():
+		obj.nazev = str(obj.cislo)+" (CisloNode)"
+		obj.save()
+
+def fix_MezicisloNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'MezicisloNode')
+	for obj in Objects.objects.all():
+		if obj.prev:
+			if (obj.prev.get_real_instance_class() != CisloNode and
+				obj.prev.get_real_instance_class() != MezicisloNode):
+					raise ValueError("Předchůdce není číslo!")
+			posledni = obj.prev.cislo
+			obj.nazev = "Mezičíslo po čísle"+str(posledni)+" (MezicisloNode)"
+		elif obj.root:
+			if obj.root.get_real_instance_class() != RocnikNode:
+				raise ValueError("Kořen stromu není ročník!")
+			rocnik = obj.root.rocnik
+			obj.nazev = "První mezičíslo ročníku "+" (MezicisloNode)"
+		else:
+			print("!!!!! Nějaké neidentifikované mezičíslo !!!!!")
+			obj.nazev = "Neidentifikovatelné mezičíslo! (MezicisloNode)"
+		obj.save()
+
+def fix_TemaVCisleNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'TemaVCisleNode')
+	for obj in Objects.objects.all():
+		obj.nazev = str(obj.tema)+" (TemaVCisleNode)"
+		obj.save()
+
+def fix_KonferaNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'KonferaNode')
+	for obj in Objects.objects.all():
+		obj.nazev = str(obj.konfera)+" (KonferaNode)"
+		obj.save()
+
+def fix_ClanekNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'ClanekNode')
+	for obj in Objects.objects.all():
+		obj.nazev = str(obj.clanek)+" (ClanekNode)"
+		obj.save()
+
+def fix_UlohaZadaniNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'UlohaZadaniNode')
+	for obj in Objects.objects.all():
+		obj.nazev = str(obj.uloha)+" (UlohaZadaniNode)"
+		obj.save()
+
+def fix_PohadkaNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'PohadkaNode')
+	for obj in Objects.objects.all():
+		obj.nazev = str(obj.pohadka)+" (PohadkaNode)"
+		obj.save()
+
+def fix_UlohaVzorakNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'UlohaVzorakNode')
+	for obj in Objects.objects.all():
+		obj.nazev = str(obj.uloha)+" (UlohaVzorakNode)"
+		obj.save()
+
+def fix_TextNode_names(apps,schema_editor):
+	Objects = apps.get_model('seminar', 'TextNode')
+	for obj in Objects.objects.all():
+		obj.nazev = str(obj.text)+" (TextNode)"
+		obj.save()
+
+def fix_all_names(apps,schema_editor):
+	fix_RocnikNode_names(apps,schema_editor)
+	fix_CisloNode_names(apps,schema_editor)
+	fix_MezicisloNode_names(apps,schema_editor)
+	fix_TemaVCisleNode_names(apps,schema_editor)
+	fix_KonferaNode_names(apps,schema_editor)
+	fix_ClanekNode_names(apps,schema_editor)
+	fix_UlohaZadaniNode_names(apps,schema_editor)
+	fix_PohadkaNode_names(apps,schema_editor)
+	fix_UlohaVzorakNode_names(apps,schema_editor)
+	fix_TextNode_names(apps,schema_editor)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('seminar', '0001_reset'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='treenode',
+            name='nazev',
+            field=models.TextField(help_text='Tento název se zobrazuje v nabídkách pro výběr vhodného TreeNode', null=True, verbose_name='název tohoto node'),
+        ),
+        migrations.RunPython(fix_all_names),
+    ]