78 lines
2.6 KiB
Python
78 lines
2.6 KiB
Python
# Generated by Django 4.2.2 on 2023-06-16 13:40
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from django.db import migrations
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import django.db.models.deletion
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from django.db.models import F, Subquery, OuterRef
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import ietf.utils.models
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def forward(apps, schema_editor):
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RelatedDocument = apps.get_model("doc", "RelatedDocument")
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DocAlias = apps.get_model("doc", "DocAlias")
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subquery = Subquery(DocAlias.objects.filter(pk=OuterRef("deprecated_target")).values("docs")[:1])
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RelatedDocument.objects.annotate(firstdoc=subquery).update(target=F("firstdoc"))
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def reverse(apps, schema_editor):
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pass
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class Migration(migrations.Migration):
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dependencies = [
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("doc", "0013_move_rfc_docaliases"),
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]
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operations = [
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migrations.AlterField(
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model_name='relateddocument',
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name='target',
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field=ietf.utils.models.ForeignKey(
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db_index=False,
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on_delete=django.db.models.deletion.CASCADE,
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to='doc.docalias',
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),
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),
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migrations.RenameField(
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model_name="relateddocument",
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old_name="target",
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new_name="deprecated_target"
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),
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migrations.AlterField(
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model_name='relateddocument',
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name='deprecated_target',
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field=ietf.utils.models.ForeignKey(
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db_index=True,
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on_delete=django.db.models.deletion.CASCADE,
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to='doc.docalias',
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),
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),
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migrations.AddField(
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model_name="relateddocument",
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name="target",
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field=ietf.utils.models.ForeignKey(
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default=1, # A lie, but a convenient one - no relations point here.
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on_delete=django.db.models.deletion.CASCADE,
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related_name="targets_related",
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to="doc.document",
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db_index=False,
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),
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preserve_default=False,
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),
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migrations.RunPython(forward, reverse),
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migrations.AlterField(
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model_name="relateddocument",
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name="target",
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field=ietf.utils.models.ForeignKey(
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on_delete=django.db.models.deletion.CASCADE,
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related_name="targets_related",
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to="doc.document",
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db_index=True,
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),
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),
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migrations.RemoveField(
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model_name="relateddocument",
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name="deprecated_target",
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field=ietf.utils.models.ForeignKey(
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on_delete=django.db.models.deletion.CASCADE,
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to='doc.DocAlias',
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),
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),
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]
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