55 lines
1.9 KiB
Python
55 lines
1.9 KiB
Python
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from django.db import migrations, models
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import django.db.models.deletion
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from django.core.exceptions import ObjectDoesNotExist
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def migrate_comments(apps, schema_editor):
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Comment = apps.get_model("judge", "Comment")
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Problem = apps.get_model("judge", "Problem")
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Solution = apps.get_model("judge", "Solution")
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BlogPost = apps.get_model("judge", "BlogPost")
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Contest = apps.get_model("judge", "Contest")
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for comment in Comment.objects.all():
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page = comment.page
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try:
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if page.startswith("p:"):
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code = page[2:]
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comment.linked_object = Problem.objects.get(code=code)
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elif page.startswith("s:"):
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code = page[2:]
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comment.linked_object = Solution.objects.get(problem__code=code)
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elif page.startswith("c:"):
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key = page[2:]
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comment.linked_object = Contest.objects.get(key=key)
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elif page.startswith("b:"):
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blog_id = page[2:]
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comment.linked_object = BlogPost.objects.get(id=blog_id)
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comment.save()
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except ObjectDoesNotExist:
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comment.delete()
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class Migration(migrations.Migration):
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dependencies = [
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("contenttypes", "0002_remove_content_type_name"),
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("judge", "0151_comment_content_type"),
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]
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operations = [
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migrations.RunPython(migrate_comments, migrations.RunPython.noop, atomic=True),
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migrations.AlterField(
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model_name="comment",
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name="content_type",
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field=models.ForeignKey(
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on_delete=django.db.models.deletion.CASCADE,
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to="contenttypes.contenttype",
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),
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),
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migrations.AlterField(
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model_name="comment",
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name="object_id",
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field=models.PositiveIntegerField(),
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),
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]
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