fix - pydantic model_validator("after")/classmethod deprecation

pydantic.warnings.PydanticDeprecatedSince212: Using `@model_validator` with mode='after' on a classmethod is deprecated. Instead, use an instance method. See the documentation at https://docs.pydantic.dev/2.12/concepts/validators/#model-after-validator. Deprecated in Pydantic V2.12 to be removed in V3.0.

Author: commonism

src/aiopenapi3/v30/parameter.py

@@ -316,7 +316,7 @@ class Parameter(ParameterBase, _ParameterCodec):
     in_: _In = Field(alias="in")  # TODO must be one of ["query","header","path","cookie"]
 
     @model_validator(mode="after")
-    def validate_Parameter(cls, p: "ParameterBase"):
+    def validate_Parameter(self, p: "ParameterBase"):
         assert p.in_ != "path" or p.required is True, "Parameter '%s' must be required since it is in the path" % p.name
         return p
 

src/aiopenapi3/v30/paths.py

@@ -38,8 +38,7 @@ class Link(ObjectExtended):
     server: Server | None = Field(default=None)
 
     @model_validator(mode="after")
-    @classmethod
-    def validate_Link_operation(cls, l: '__types["Link"]'):  # type: ignore[name-defined]
+    def validate_Link_operation(self, l: '__types["Link"]'):  # type: ignore[name-defined]
         assert not (
             l.operationId != None and l.operationRef != None
         ), "operationId and operationRef are mutually exclusive, only one of them is allowed"

src/aiopenapi3/v30/schemas.py

@@ -74,8 +74,7 @@ def is_boolean_schema(cls, data: Any) -> Any:
             return {"not": {}}
 
     @model_validator(mode="after")
-    @classmethod
-    def validate_Schema_number_type(cls, s: "Schema"):
+    def validate_Schema_number_type(self, s: "Schema"):
         if s.type == "integer":
             for i in ["minimum", "maximum"]:
                 if (v := getattr(s, i, None)) is not None and not isinstance(v, int):

src/aiopenapi3/v31/info.py

@@ -27,8 +27,7 @@ class License(ObjectExtended):
     url: str | None = Field(default=None)
 
     @model_validator(mode="after")
-    @classmethod
-    def validate_License(cls, l: "License"):
+    def validate_License(self, l: "License"):
         """
         A URL to the license used for the API. This MUST be in the form of a URL. The url field is mutually exclusive of the identifier field.
         """

src/aiopenapi3/v31/root.py

@@ -35,8 +35,7 @@ class Root(ObjectExtended, RootBase):
     externalDocs: dict[Any, Any] = Field(default_factory=dict)
 
     @model_validator(mode="after")
-    @classmethod
-    def validate_Root(cls, r: "Root") -> "Self":
+    def validate_Root(self, r: "Root") -> "Self":
         assert r.paths or r.components or r.webhooks
         return r