feat: stateflow v2 (params required)

stateflow/migrations/0017_state_parameter_many_to_many.py

@@ -0,0 +1,70 @@
+# Generated manually for stateflow parameter refactoring
+from django.db import migrations, models
+
+
+def cleanup_old_parameters(apps, schema_editor):
+    """
+    清空旧的参数数据（测试数据，无需保留）
+    """
+    StateParameter = apps.get_model('stateflow', 'StateParameter')
+    # 删除所有旧的参数
+    StateParameter.objects.all().delete()
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('stateflow', '0016_alter_stateparameter_key_alter_stateparameter_value'),
+    ]
+
+    operations = [
+        # 步骤1: 清空旧参数数据
+        migrations.RunPython(
+            cleanup_old_parameters,
+            migrations.RunPython.noop,
+        ),
+        
+        # 步骤2: 移除旧的 ForeignKey
+        migrations.RemoveField(
+            model_name='stateparameter',
+            name='state',
+        ),
+        
+        # 步骤3: 添加 name 字段
+        migrations.AddField(
+            model_name='stateparameter',
+            name='name',
+            field=models.CharField(
+                default='未命名参数',
+                help_text='参数的显示名称',
+                max_length=100,
+                verbose_name='参数名称'
+            ),
+            preserve_default=False,
+        ),
+        
+        # 步骤4: 添加多对多字段
+        migrations.AddField(
+            model_name='state',
+            name='parameters',
+            field=models.ManyToManyField(
+                blank=True,
+                help_text='此状态使用的工艺参数',
+                related_name='states',
+                to='stateflow.stateparameter',
+                verbose_name='关联参数'
+            ),
+        ),
+        
+        # 步骤5: 将 key 设置为 unique
+        migrations.AlterField(
+            model_name='stateparameter',
+            name='key',
+            field=models.CharField(
+                help_text='唯一标识符',
+                max_length=100,
+                unique=True,
+                verbose_name='参数键'
+            ),
+        ),
+    ]