Pavel "LEdoian" Turinsky
4 years ago
3 changed files with 53 additions and 4 deletions
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# Generated by Django 2.2.16 on 2020-09-04 12:06 |
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from django.db import migrations |
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from logging import getLogger |
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log = getLogger(__name__) |
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# Oprava migrací 0065 a 0066, kde jsem špatně pochopil django-polymorphic |
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# Pomocná funkce -- děláme to samé pro obě polymorfní hierarchie |
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def fix_ctypes(parent: str, children, apps, schema_editor): |
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Parent = apps.get_model('seminar', parent) |
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ContentType = apps.get_model('contenttypes', 'ContentType') |
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# Nejdřív všechno smažeme: |
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Parent.objects.update(polymorphic_ctype=None) |
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# Opravíme děti |
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for clsname in children: |
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Model = apps.get_model('seminar', clsname) |
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ct = ContentType.objects.get_for_model(Model) |
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Model.objects.update(polymorphic_ctype=ct) |
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# Ostatní instance mají mít explicitně content type pro rodiče |
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new_ct = ContentType.objects.get_for_model(Parent) |
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for obj in Parent.objects.filter(polymorphic_ctype__isnull=True): |
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log.warn(f"{parent} {obj} neměl content type -- nejspíš to je instance přímo {parent}!") |
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obj.polymorphic_ctype=new_ct |
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obj.save() |
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def fix_treenode(apps, schema_editor): |
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children = ['RocnikNode', 'CisloNode', 'MezicisloNode', 'TemaVCisleNode', |
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'OrgTextNode', 'UlohaZadaniNode', 'UlohaVzorakNode', 'PohadkaNode', |
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'TextNode', 'CastNode', 'ReseniNode'] |
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fix_ctypes("TreeNode", children, apps, schema_editor) |
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def fix_problem(apps, schema_editor): |
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children = ['Tema', 'Clanek', 'Uloha', 'Konfera'] |
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fix_ctypes("Problem", children, apps, schema_editor) |
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class Migration(migrations.Migration): |
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dependencies = [ |
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('seminar', '0086_auto_20200819_0959'), |
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] |
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operations = [ |
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migrations.RunPython(fix_treenode, migrations.RunPython.noop), |
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migrations.RunPython(fix_problem, migrations.RunPython.noop), |
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] |
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