Scaffolding: Generate better navigation name when FK property ends wi…

…th guid

Resolves #26990

src/EFCore.Design/Scaffolding/Internal/CandidateNamingService.cs

@@ -145,8 +145,15 @@ private static string StripId(string commonPrefix)
  return commonPrefix;
  }
 
+ var ignoredCharacterCount = 2;
+ if (commonPrefix.Length > 4
+ && commonPrefix.EndsWith("guid", StringComparison.OrdinalIgnoreCase))
+ {
+ ignoredCharacterCount = 4;
+ }
+
  int i;
- for (i = commonPrefix.Length - 3; i >= 0; i--)
+ for (i = commonPrefix.Length - ignoredCharacterCount - 1; i >= 0; i--)
  {
  if (char.IsLetterOrDigit(commonPrefix[i]))
  {

test/EFCore.Design.Tests/Scaffolding/Internal/RelationalScaffoldingModelFactoryTest.cs

@@ -2452,4 +2452,62 @@ public void Scaffold_skip_navigation_for_many_to_many_join_table_self_ref()
  Assert.Equal(2, t2.GetForeignKeys().Count());
  });
  }
+
+ [ConditionalFact]
+ public void Fk_property_ending_in_guid_navigation_name()
+ {
+ var blogTable = new DatabaseTable
+ {
+ Database = Database,
+ Name = "Blog",
+ Columns = { IdColumn },
+ PrimaryKey = IdPrimaryKey
+ };
+ var postTable = new DatabaseTable
+ {
+ Database = Database,
+ Name = "Post",
+ Columns =
+ {
+ IdColumn,
+ new DatabaseColumn
+ {
+ Table = Table,
+ Name = "BlogGuid",
+ StoreType = "int",
+ IsNullable = true
+ }
+ },
+ PrimaryKey = IdPrimaryKey
+ };
+
+ postTable.ForeignKeys.Add(
+ new DatabaseForeignKey
+ {
+ Table = postTable,
+ Name = "FK_Foo",
+ Columns = { postTable.Columns.ElementAt(1) },
+ PrincipalTable = blogTable,
+ PrincipalColumns = { blogTable.Columns.ElementAt(0) },
+ OnDelete = ReferentialAction.Cascade
+ });
+
+ var info = new DatabaseModel { Tables = { blogTable, postTable } };
+
+ var model = _factory.Create(info, new ModelReverseEngineerOptions());
+
+ Assert.Collection(
+ model.GetEntityTypes().OrderBy(t => t.Name).Cast<EntityType>(),
+ entity =>
+ {
+ Assert.Equal("Blog", entity.Name);
+ Assert.Equal("Posts", entity.GetNavigations().Single().Name);
+ },
+ entity =>
+ {
+ Assert.Equal("Post", entity.Name);
+ Assert.Equal("Blog", entity.GetNavigations().Single().Name);
+ }
+ );
+ }
 }