How to configure in Minimal API

[AhmedMa3rouf]

how i can configure .net 6 (Minimal API) to use the JsonApiSerializer as a default Json format??
i can set it in each map but i want to set it as an default format

this is will working
app.MapGet("/GetAll", async (AppDBContext db) =>
JsonConvert.SerializeObject(await db.Banks.ToArrayAsync(), new JsonApiSerializerSettings()));

but the output is a text not json

[wavedeck]

I'm afraid that overriding the json serializer is not possible in minimal apis. (correct me if I'm wrong) This was a design decision by the ASP.NET Core team, to keep minimal apis simple and performant.

So you'd have to use JsonConvert.SerializeObject within all handlers like you already do.

Additionally, SerializeObject returns a string. That's why ASP.NET returns a Content-Type of text/plain.

To make this approach work correctly with minimal apis,
you need to return a Results.Content response and set your own Content-Type.

For example:

app.MapGet("/hello-world", async () => {

    // get a list of banks from the database
    var banks = await db.Banks.ToListAsync();

    // serialize to a jsonapi formatted string
    var jsonResponse = JsonConvert.SerializeObject(banks, new JsonApiSerializerSettings());

    // return a ContentResult with an optional http status code
    return Results.Content(jsonResponse, "application/vnd.api+json", 200); 
})