Hey everyone,
Testing out a spatial project with .net core and I ran into the following error:
at CallSite.Target(Closure , CallSite , Type , Nullable`1 , Object )
at UpdateDelegates.UpdateAndExecuteVoid3[T0,T1,T2](CallSite site, T0 arg0, T1 arg1, T2 arg2)
at DiscussionsControllerIntegrationTests.CreateTestDiscussion(HttpClient client, ApplicationDbContext db, DiscussionCreateWebRequest payload) in DiscussionsControllerIntegrationTests.cs line: 56
at DiscussionsControllerIntegrationTests.b__1_0(ApplicationDbContext db) in DiscussionsControllerIntegrationTests.cs line: 27
at IntegrationTestBase.RunTest(Func`2 testToExecute) in IntegrationTestBase.cs line: 54
at DiscussionsControllerIntegrationTests.CreateDiscussionIsSuccessful() in DiscussionsControllerIntegrationTests.cs line: 25
at — End of stack trace from previous location where exception was thrown —
Thankfully the solution is pretty straight forward. Install GeoJSON:
Install-Package NetTopologySuite.IO.GeoJSON
Then merge the following with your existing addMvc call in startup.cs:
services.AddMvc(options =>
{
// Prevent the following exception: 'This method does not support GeometryCollection arguments'
// See: https://github.com/npgsql/Npgsql.EntityFrameworkCore.PostgreSQL/issues/585
options.ModelMetadataDetailsProviders.Add(new SuppressChildValidationMetadataProvider(typeof(Point)));
options.ModelMetadataDetailsProviders.Add(new SuppressChildValidationMetadataProvider(typeof(Coordinate)));
options.ModelMetadataDetailsProviders.Add(new SuppressChildValidationMetadataProvider(typeof(LineString)));
options.ModelMetadataDetailsProviders.Add(new SuppressChildValidationMetadataProvider(typeof(MultiLineString)));
})
.AddJsonOptions(options =>
{
foreach (var converter in NetTopologySuite.IO.GeoJsonSerializer.Create(new GeometryFactory(new PrecisionModel(), 4326)).Converters)
{
options.SerializerSettings.Converters.Add(converter);
}
})
.SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
