Add property to every input schema

[chriskolenko]

I would like to add a Header to every model. Is there a nice way to doing so?

For example
X-Organisation-Id

I'll then use a middleware to handle this header value.

[vearutop]

Hello, in this case I think the easiest would be to iterate OpenAPI spec value after it has been populated, and add needed shared parameters to all path items. Please check an example:

https://github.com/swaggest/rest/blob/v0.2.59/_examples/advanced/router.go#L183-L196
(or for OpenAPI 3.1: https://github.com/swaggest/rest/blob/v0.2.59/_examples/advanced-generic-openapi31/router.go#L235-L248)

	for p, pi := range r.Spec.Paths.MapOfPathItemValues {
		pi.Parameters = append(pi.Parameters, openapi3.ParameterOrRef{
			Parameter: (&openapi3.Parameter{
				In:   openapi3.ParameterInHeader,
				Name: "X-Umbrella-Header",
				Schema: &openapi3.SchemaOrRef{
					Schema: (&openapi3.Schema{}).WithType(openapi3.SchemaTypeString),
				},
			}).WithDescription("This request header is supported in all operations."),
		})

		r.Spec.Paths.MapOfPathItemValues[p] = pi
	}