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2c9bbb051a
- Saving a model automatically updates the reference_int field - Data migrations are correctly applied
51 lines
981 B
Python
51 lines
981 B
Python
# Generated by Django 3.2.5 on 2021-10-14 06:32
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import re
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from django.db import migrations
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def build_refs(apps, schema_editor):
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"""
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Rebuild the integer "reference fields" for existing Build objects
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"""
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BuildOrder = apps.get_model('build', 'build')
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for build in BuildOrder.objects.all():
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ref = 0
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result = re.match(r"^(\d+)", build.reference)
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if result and len(result.groups()) == 1:
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try:
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ref = int(result.groups()[0])
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except:
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ref = 0
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build.reference_int = ref
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build.save()
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def unbuild_refs(apps, schema_editor):
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"""
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Provided only for reverse migration compatibility
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"""
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pass
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class Migration(migrations.Migration):
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atomic = False
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dependencies = [
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('build', '0031_build_reference_int'),
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]
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operations = [
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migrations.RunPython(
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build_refs,
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reverse_code=unbuild_refs
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)
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]
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