33 lines
1021 B
Python
33 lines
1021 B
Python
from django.db import migrations, transaction
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from django.db.utils import ProgrammingError
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class Migration(migrations.Migration):
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dependencies = [
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('agendas', '0093_change_recurrence_fields'),
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]
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operations = [
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migrations.RemoveField(
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model_name='event',
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name='recurrence_rule',
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),
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migrations.RemoveField(
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model_name='event',
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name='repeat',
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),
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]
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def _check_db(self, project_state, schema_editor):
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try:
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with transaction.atomic():
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# check if the column exists
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schema_editor.execute('SELECT recurrence_rule FROM agendas_event')
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except ProgrammingError:
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# if not exists, ignore the migration
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return project_state
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def apply(self, project_state, schema_editor, *args, **kwargs):
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result = self._check_db(project_state, schema_editor)
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return result or super().apply(project_state, schema_editor, *args, **kwargs)
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