feat: support skip table migration by set managed=False (#397)

tests/models.py

@@ -102,6 +102,7 @@ class Product(Model):
     class Meta:
         unique_together = (("name", "type"),)
         indexes = (("name", "type"),)
+        managed = True
 
 
 class Config(Model):
@@ -118,6 +119,21 @@ class Config(Model):
 
     email: fields.OneToOneRelation[Email]
 
+    class Meta:
+        managed = True
+
+
+class DontManageMe(Model):
+    name = fields.CharField(max_length=50)
+
+    class Meta:
+        managed = False
+
+
+class Ignore(Model):
+    class Meta:
+        managed = False
+
 
 class NewModel(Model):
     name = fields.CharField(max_length=50)

tests/old_models.py

@@ -89,3 +89,40 @@ class Config(Model):
 
     class Meta:
         table = "configs"
+
+
+class DontManageMe(Model):
+    name = fields.CharField(max_length=50)
+
+    class Meta:
+        table = "dont_manage"
+
+
+class Ignore(Model):
+    name = fields.CharField(max_length=50)
+
+    class Meta:
+        managed = True
+
+
+def main() -> None:
+    """Generate a python file for the old_models_describe"""
+    from pathlib import Path
+
+    from tortoise import run_async
+    from tortoise.contrib.test import init_memory_sqlite
+
+    from aerich.utils import get_models_describe
+
+    @init_memory_sqlite
+    async def run() -> None:
+        old_models_describe = get_models_describe("models")
+        p = Path("old_models_describe.py")
+        p.write_text(f"{old_models_describe = }", encoding="utf-8")
+        print(f"Write value to {p}\nYou can reformat it by `ruff format {p}`")
+
+    run_async(run())
+
+
+if __name__ == "__main__":
+    main()