feat: equipment增加精度等级字段

apps/em/migrations/0008_equipment_accuracy_level.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.12 on 2023-11-22 01:55
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('em', '0007_auto_20231121_1852'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='equipment',
+            name='accuracy_level',
+            field=models.CharField(blank=True, default='', max_length=10, verbose_name='精度等级'),
+        ),
+    ]

apps/em/models.py

@@ -72,6 +72,8 @@ class Equipment(CommonBModel):
     meter_type = models.CharField(
         '仪表类型', max_length=100, null=True, blank=True)
     management_level = models.CharField('管理等级', max_length=10, default='A')
+    accuracy_level = models.CharField(
+        '精度等级', max_length=10, default='', blank=True)
     measurement_range = models.CharField(
         '量程范围', max_length=100, default='', blank=True)
     use_date = models.DateField('启用日期', null=True, blank=True)