The @extend_schema_view decorator doesn't affect the view logic works. It only customizes the API documentation.

You can see the result on /api/docs/.

You can search the specific data through this function.

The code is

@extend_schema_view(
    list=extend_schema(
        parameters=[
            OpenApiParameter(
                'tags',
                OpenApiTypes.STR,
                description='Comma separated list of IDs to filter',
            ),
            OpenApiParameter(
                'ingredients',
                OpenApiTypes.STR,
                description='Comma separated list of ingredient IDs to filter',
            )
        ]
    )
)
class ...

• @extend_schema_view: This decorator allows to Extend the auto generate schema that's created by Django Rest Framework Spectacular.
• list=extend_schema: Extend the schema for the list endpoint.
• parameters: It can be pass into the request that made to the list API for this view.
• OpenApiParameter: Parameter class provided DRF spectacular. It allows us to specify the details of a parameter that can be accepted in the API request.
• First parameter 'tags': Specifying the name of the parameter to filter.
• OpenApiTypes.STR: The type is a String.
• description: Help to user.