Error in TypeSpec Code: duplicate-property: Model already has a property named

[yasu7ri]

When I write the code as below, I get an error duplicate-property: Model already has a property named countryCode.
Why is this happening?

import "@typespec/http";

using TypeSpec.Http;

@tag("Country")
@route("/countries")
interface Countries {
    @route("{countryCode}/update") @post update(@path countryCode: string, ...Country): void | Error;
}

@doc("Country")
model Country {
    @doc("countryCode")
    countryCode: string;
    @doc("countryName")
    countryName: string;
}

countries.tsp:8:76 - error duplicate-property: Model already has a property named countryCode
> 8 |     @route("{countryCode}/update") @post update(@path countryCode: string, ...Country): void | Error;
    |                                                                            ^^^^^^^^^^

Found 1 error.

Is it not possible to use a property name from the model as a path parameter?

[timotheeguerin]

Depending on what you exactly want to do here, there is 2 options

import "@typespec/http";

using TypeSpec.Http;

// Option 1 - here you reuse the same property
@route("1/{countryCode}/update") op read1(...Country1): void;

model Country1 {
  @path countryCode: string;
  countryName: string;
}

// Option 2 - here the country is just the body and you still have an explicit path param 
@route("2/{countryCode}/update") op read2(
  @path countryCode: string,
  @body country: Country2,
): void;

model Country2 {
  countryCode: string;
  countryName: string;
}

Playground example

[yasu7ri]

Thank you for your response.

I wanted to use the country model in the body, so I will use Option 2, which specifies @Body as a parameter.