There is a little-documented
feature of the ASP.NET Core Model Metadata model, that the DisplayAttribute actually causes lookups via the IStringLocalizer service to happen. The localizer is
scoped to the static type of the model used (i.e. not even the declaring type
of the property in question). The documentation also helpfully provides a way
to concentrate the resources in a single file, but I find this approach too extreme.
Multiple resource files are fine by me, but a copy of all resources for every
class hierarchy is not.
This package is a simple extension of the standard ASP.NET Core DataAnnotations
localization (Html.DisplayNameFor, etc.) that allows resource strings
translations to be inherited within model class hierarchy, finishing with a
special _Shared resource file (defined in the assembly of the original
Model).
Just replace
services.AddMvc()
.AddDataAnnotationsLocalization()
...with
services.AddMvc()
.AddDataAnnotationsLocalizationWithInheritance()
...I find the XML-based .resx format to be an overkill for translation files.
There has always been a much simpler alternative in the form of .restext
files (simple INI-style key-value pairs), it is just missing in the default
EmbeddedResource Include glob of the .NET Core .csproj.
Fixing this is as simple as adding the following to your .csproj:
<ItemGroup>
<EmbeddedResource Include="**/*.restext" />
</ItemGroup>The naming rules, etc., are the same as for .resx files.
This package is licensed under the MIT License
Copyright © 2019 triaxis s.r.o.