.Net Core Odata response missed metadata values - .net-core

Question

Im using Odata on my old project with .NET Framework, and response from it like this:
{
"#odata.context": "http://localhost:5000/api/$metadata#TestController",
"#odata.count": 0,
"value": []
}
Here is a metadata of odata and prop "value" contains response data.
But when I tried to install Odata into my new project on .NET Core 3.1, it works, but response from it like this:
{
//some data
}
I haven't got odata metadata velues. I want that responses from all projects were similar. Can't find information how to add|turn on metadata into my .Net core response

Answer 1

It could work well in my asp.net core 3.1 project,here is a working demo like below:
1.Install Microsoft.AspNetCore.OData package version 7.5.2.
2.Startup.cs:
public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
services.AddOData();
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseHttpsRedirection();
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
endpoints.Select().Filter().OrderBy().Count().MaxTop(10);
endpoints.MapODataRoute("api", "api", GetEdmModel());
});
}
private IEdmModel GetEdmModel()
{
var odataBuilder = new ODataConventionModelBuilder();
odataBuilder.EntitySet<WeatherForecast>("WeatherForecast");
return odataBuilder.GetEdmModel();
}
3.Model:
public class WeatherForecast
{
public Guid Id { get; set; } //must have a key
public DateTime Date { get; set; }
public int TemperatureC { get; set; }
public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
public string Summary { get; set; }
}
4.Controller(comment on Route attribute and ApiController attribute):
//[ApiController]
//[Route("[controller]")]
public class WeatherForecastController : ControllerBase
{
private static readonly string[] Summaries = new[]
{
"Freezing", "Bracing", "Chilly", "Cool", "Mild", "Warm", "Balmy", "Hot", "Sweltering", "Scorching"
};
private readonly ILogger<WeatherForecastController> _logger;
public WeatherForecastController(ILogger<WeatherForecastController> logger)
{
_logger = logger;
}
[EnableQuery]
[HttpGet]
public async Task<IEnumerable<WeatherForecast>> GetAsync()
{
var rng = new Random();
return Enumerable.Range(1, 5).Select(index => new WeatherForecast
{
Date = DateTime.Now.AddDays(index),
TemperatureC = rng.Next(-20, 55),
Summary = Summaries[rng.Next(Summaries.Length)]
})
.ToArray();
}
}
Result: