Cascade delete Aliquot when parent Sample or Freezer Location is deleted

USGS-WiM · Feb 18, 2020 · fa0adfe · fa0adfe
1 parent b4e4314
commit fa0adfe
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Showing 2 changed files with 5 additions and 5 deletions.
diff --git a/liliapi/migrations/0001_initial.py b/liliapi/migrations/0001_initial.py
@@ -1,4 +1,4 @@
-# Generated by Django 2.2 on 2020-01-15 16:12
+# Generated by Django 2.2.10 on 2020-02-18 15:37
 
 import datetime
 from decimal import Decimal
@@ -1603,9 +1603,9 @@ class Migration(migrations.Migration):
                 ('aliquot_number', liliapi.models.NonnegativeIntegerField(validators=[django.core.validators.MinValueValidator(0)])),
                 ('frozen', models.BooleanField(default=True)),
                 ('created_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='aliquot_creator', to=settings.AUTH_USER_MODEL)),
-                ('freezer_location', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='aliquots', to='liliapi.FreezerLocation')),
+                ('freezer_location', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='aliquots', to='liliapi.FreezerLocation')),
                 ('modified_by', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.PROTECT, related_name='aliquot_modifier', to=settings.AUTH_USER_MODEL)),
-                ('sample', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='aliquots', to='liliapi.Sample')),
+                ('sample', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='aliquots', to='liliapi.Sample')),
             ],
             options={
                 'db_table': 'lili_aliquot',

diff --git a/liliapi/models.py b/liliapi/models.py
@@ -245,8 +245,8 @@ def aliquot_string(self):
         """Returns the concatenated parent ID and child series number of the record"""
         return '%s-%s' % (self.sample, self.aliquot_number)
 
-    sample = models.ForeignKey('Sample', models.PROTECT, related_name='aliquots')
-    freezer_location = models.ForeignKey('FreezerLocation', models.PROTECT, related_name='aliquots')
+    sample = models.ForeignKey('Sample', models.CASCADE, related_name='aliquots')
+    freezer_location = models.ForeignKey('FreezerLocation', models.CASCADE, related_name='aliquots')
     aliquot_number = NonnegativeIntegerField()
     frozen = models.BooleanField(default=True)
     history = HistoricalRecords(inherit=True, table_name='lili_aliquothistory',