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41 lines
1.2 KiB
Python
41 lines
1.2 KiB
Python
# Generated by Django 3.2.4 on 2021-08-27 17:27
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from django.db import migrations, models
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import django.db.models.expressions
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def normalize_readthrough_dates(app_registry, schema_editor):
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"""Find any invalid dates and reset them"""
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db_alias = schema_editor.connection.alias
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app_registry.get_model("bookwyrm", "ReadThrough").objects.using(db_alias).filter(
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start_date__gt=models.F("finish_date")
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).update(start_date=models.F("finish_date"))
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def reverse_func(apps, schema_editor):
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"""nothing to do here"""
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class Migration(migrations.Migration):
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dependencies = [
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("bookwyrm", "0085_user_saved_lists"),
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]
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operations = [
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migrations.RunPython(normalize_readthrough_dates, reverse_func),
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migrations.AlterModelOptions(
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name="readthrough",
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options={"ordering": ("-start_date",)},
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),
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migrations.AddConstraint(
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model_name="readthrough",
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constraint=models.CheckConstraint(
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check=models.Q(
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("finish_date__gte", django.db.models.expressions.F("start_date"))
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),
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name="chronology",
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),
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),
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]
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