cascade or protect set

equipment/migrations/0008_auto_20180808_1454.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.11 on 2018-08-08 14:54
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('equipment', '0007_equipmentattribute_equipmentattributevalue'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='equipment',
+            name='category',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='equipment.EquipmentCategory'),
+        ),
+    ]

equipment/models.py

@@ -50,6 +50,7 @@ class Equipment(EventSpecificMixin, models.Model):
             )
     category = models.ForeignKey(
             EquipmentCategory,
+            on_delete=models.PROTECT,
             )
 
     class Meta:
@@ -77,6 +78,7 @@ class EquipmentAttribute(models.Model):
 class EquipmentAttributeValue(models.Model):
     equipment = models.ForeignKey(
                 Equipment,
+                on_delete=models.CASCADE,
                 related_name="attributes",
                 help_text=_("Matériel concerné par le defaut"),
             )
@@ -124,6 +126,7 @@ class EquipmentDefault(models.Model):
     remark = models.TextField(_("remarque sur le défaut"))
     equipment = models.ForeignKey(
                 Equipment,
+                on_delete=models.CASCADE,
                 related_name="remarks",
                 help_text=_("Matériel concerné par le defaut"),
             )
@@ -147,6 +150,7 @@ class EquipmentLost(models.Model):
             )
     equipment = models.ForeignKey(
                 Equipment,
+                on_delete=models.CASCADE,
                 related_name="losts",
                 help_text=_("Matériel concerné par la perte"),
             )
@@ -160,6 +164,7 @@ class EquipmentRevision(models.Model):
             )
     equipment = models.ForeignKey(
                 Equipment,
+                on_delete=models.CASCADE,
                 related_name="revisions",
                 help_text=_("Matériel concerné par les révisions"),
             )