feat: Ptest不指定testitem

apps/qm/migrations/0042_alter_ptest_testitem.py

@@ -0,0 +1,19 @@
+# Generated by Django 3.2.12 on 2025-02-11 06:49
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('qm', '0041_auto_20250122_1347'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='ptest',
+            name='testitem',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, to='qm.testitem', verbose_name='测试项目'),
+        ),
+    ]

apps/qm/models.py

@@ -351,7 +351,7 @@ class Ptest(CommonAModel):
     test_user = models.ForeignKey(
         User, verbose_name='检验员', on_delete=models.CASCADE)
     testitem = models.ForeignKey(
-        TestItem, verbose_name='测试项目', on_delete=models.CASCADE)
+        TestItem, verbose_name='测试项目', on_delete=models.CASCADE, null=True, blank=True)
     sample_number = models.CharField('样品编号', max_length=20)
     sample_count = models.PositiveIntegerField('样品数量', null=True, blank=True)
     sample_density = models.FloatField('样品密度', null=True, blank=True)