DynamicLocalizer

.net core dynamic localizer for any resource

Example

use in Startup.cs with any resource by config

Config

load resource from db with EFCore as below

services.AddDynamicLocalizer(new DynamicLocalizerOption()
{
    LoadResource = () =>
    {
        //create EFCore db context
        var optionsBuilder = new DbContextOptionsBuilder<ApplicationDbContext>();
        optionsBuilder.UseSqlServer(Configuration.GetConnectionString("Db"));
        var context = new ApplicationDbContext(optionsBuilder.Options);
      
        //demo data
        if (!context.Resource.Any())
        {
            context.Resource.AddRange(new List<Resource>()
            {
                new Resource()
                {
                    Code = "test",
                    Culture = "zh_CN",
                    Text = "zh_CN:测试"
                },
                new Resource()
                {
                    Code = "test",
                    Culture = "en_US",
                    Text = "en_US:Test"
                },
                new Resource()
                {
                    Code = "test",
                    Culture = "zh-CN",
                    Text = "zh-CN:测试"
                }
            });
            context.SaveChanges();
        }
      
        var resource = context.Resource.ToDictionary(e => $"{e.Code}.{e.Culture}", e => e.Text);

        return resource;
    },
    FormatCulture = (e => e.ToString().Replace("-", "_")),
    DefaultCulture = "zh_CN"
});

app.UseDynamicLocalizer();

Use

same as IStringLocalizer (you can ReloadResource when resource changed)

[Route("api/[controller]")]
[ApiController]
public class TestController : BaseController
{
    private readonly IDynamicLocalizer _localizer;

    public TestController(IDynamicLocalizer localizer)
    {
        _localizer = localizer;
    }

    [HttpGet]
    public string Get()
    {
        return _localizer["test"];
    }

    [HttpGet("reload")]
    public IActionResult Reload()
    {
        _localizer.ReloadResource();
        return Ok();
    }
}

Description

• DynamicLocalizerOption

  option	type	description	default
  LoadResource	Func<Dictionary<string, string>>	function to load resource	() => new Dictionary<string, string>()
  FormatCulture	Func<CultureInfo, string>	function to format culture from CultureInfo.CurrentCulture to Resource Culture	e => e.ToString()
  DefaultCulture	string	default culture	"zh_CN"