register and sign in pages
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from django.db import migrations
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from locations.seed import seed
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def seed_locations(apps, schema_editor):
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seed(apps.get_model("locations", "Atoll"), apps.get_model("locations", "Island"))
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def unseed_locations(apps, schema_editor):
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"""Only removes rows nothing references."""
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Atoll = apps.get_model("locations", "Atoll")
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Island = apps.get_model("locations", "Island")
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from locations.seed import ATOLLS
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for entry in ATOLLS:
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Island.objects.filter(
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atoll__name=entry["name"], name__in=entry["islands"], users__isnull=True
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).delete()
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Atoll.objects.filter(
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name=entry["name"], islands__isnull=True, users__isnull=True
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).delete()
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class Migration(migrations.Migration):
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dependencies = [
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("locations", "0001_initial"),
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# Islands/atolls are referenced by users; keep the tables in step.
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("users", "0001_initial"),
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]
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operations = [migrations.RunPython(seed_locations, unseed_locations)]
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