Knowit.CodeFirstTranslations.Optimizely 1.0.2

Knowit.CodeFirstTranslations.Optmizely

Helps to define code-first translations in Optimizely CMS based projects

Installation:

dotnet add package Knowit.CodeFirstTranslations.Optimizely

How to define translations:

Step 1:

Define static translation classes:

    public static class LangLabels
    {
        public static ITranslator Translator { get; set; } = null!;

        public static CultureInfo Culture => CultureInfo.GetCultureInfo("en"); // Not required property, default culture is "en"

        private static string T(string key, string text) => Translator.Translate(key, text);

        public static string Open => T("open", "Open");

        public static string Close => T(nameof(Close), "Close");

        public static string Hello => T(nameof(Hello), "Hello, World.");
    }

    public static class LangTexts // Multi-language example
    {
        public static IMultiLangTranslator Translator { get; set; } = null!;

        public static List<CultureInfo> Cultures => new()
        {
            CultureInfo.GetCultureInfo("en"),
            CultureInfo.GetCultureInfo("no")
        };

        private static string T(string key, string en, string no) => Translator.Translate(key, en, no);

        public static string Open => T(nameof(Open),
            "Open",
            "Åpen");

        public static string Close => T(nameof(Close),
            "Close",
            "Lukk");

        public static string Hello => T(nameof(Hello),
            "Hello, it is test page of translation classes for EPiServer.",
            "Hei, det er testsiden med oversettelsesklasser for EPiServer.");

    }

    public static class LangEnums
    {
        public static ITranslator Translator { get; set; }

        private static string T(string key, string text)
            => Translator.Translate(key, text);

        public static string Layouts_Wide => T(nameof(Layouts_Wide), "Wide");

        public static string Layouts_TheeColumns => T(nameof(Layouts_TheeColumns), "Sidebar to the right");

        public static string ListItemsLayout_List => T(nameof(ListItemsLayout_List), "List");

        public static string ListItemsLayout_Tiles => T(nameof(ListItemsLayout_Tiles), "Tiles");

        public static string Gender_Male => T(nameof(Gender_Male), "Male");

        public static string Gender_Female => T(nameof(Gender_Female), "Female");
    }

Step 2:

Register localization provider and CodeFirstTranslations services:

    public void ConfigureServices(IServiceCollection services)
    {
        if (_webHostingEnvironment.IsDevelopment())
        {
            AppDomain.CurrentDomain.SetData("DataDirectory", Path.Combine(_webHostingEnvironment.ContentRootPath, "App_Data"));

            services.Configure<SchedulerOptions>(options => options.Enabled = false);
        }

        services
            .AddCmsAspNetIdentity<ApplicationUser>()
            .AddCms()
            .AddAdminUserRegistration()
            .AddEmbeddedLocalization<Startup>()
            // CodeFirstTranslations
            .AddLocalizationProvider<CodeFirstLocalizationProvider>() 
            .AddCodeFirstTranslations<OptimizelyTranslator, MultiLangOptimizelyTranslator>(); 
    }

Then confiure CodeFirst translations and register translation classes defined in step 1:

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }

        app.UseStaticFiles();
        app.UseRouting();
        app.UseAuthentication();
        app.UseAuthorization();

        // CodeFirstTranslations
        app.UseCodeFirstTranslations(translationsBuilder =>
        {
            translationsBuilder.RegisterTranslations(new[]
            {
                new TranslationsClassRegistration(typeof(LangLabels), "Labels"),
                new TranslationsClassRegistration(typeof(LangTexts), "Texts"),
                new TranslationsClassRegistration(typeof(LangEnums), "Special/Enums"),
            });
        });

        app.UseEndpoints(endpoints =>
        {
            endpoints.MapContent();
        });
    }

How to use:

Basic usage:

Just call aprropriate property of tralations classes, since classes are static you don't need to inject them and call properties within classes or Razor views:

    new Breadcrumbs
        {
            Links = breadcrumbsLinks,
            Lang = new Breadcrumbs_Lang
            {
                AriaLabel = LangLabels.BreadcrumbsAreaLabel
            }
        };

    ...

    var title = string.Format(LangFormats.SitePageTitle, pageTitle);

    <span class="toggle__text">@LangLabels.Search</span>

Advanced usage:

It is posible to translate enum values using Display attribute

    public enum ListItemsLayout
    {
        [Display(ResourceType = typeof(LangEnums), Name = "ListItemsLayout_List")]
        List = 1,

        [Display(ResourceType = typeof(LangEnums), Name = "ListItemsLayout_Tiles")]
        Tiles
    }

In order to get translated name of enum value please use GetDisplayName() extension method.

ListItemsLayout.List.GetDisplayName()

It is possible to use translations with data annotation attributes

View model:

    public class ProfileViewModel
    {
        [Display(ResourceType = typeof(ProfileTranslations), Name = "FirstName")]
        public string FirstName { get; set; } = null!;

        [Display(ResourceType = typeof(ProfileTranslations), Name = "LastName")]
        [Required(ErrorMessageResourceType = typeof(ProfileTranslations), ErrorMessageResourceName = "ErrorLastNameIsRequired")]
        public string LastName { get; set; } = null!;

        [Display(ResourceType = typeof(ProfileTranslations), Name = "Email")]
        [Required(ErrorMessageResourceType = typeof(ProfileTranslations), ErrorMessageResourceName = "ErrorEmailIsRequired")]
        public string Email { get; set; } = null!;

        [Display(ResourceType = typeof(ProfileTranslations), Name = "Gender")]
        [Required]
        public Gender Gender { get; set; }
    }

View:

@using (Html.BeginForm("SaveProfile", "HomePage"))
{
    <div>
        @Html.LabelFor(x => profile.FirstName)
        @Html.EditorFor(x => profile.FirstName)
        @Html.ValidationMessageFor(x => profile.FirstName)
    </div>
    <div>
        @Html.LabelFor(x => profile.LastName)
        @Html.EditorFor(x => profile.LastName)
        @Html.ValidationMessageFor(x => profile.LastName)
    </div>
    <div>
        @Html.LabelFor(x => profile.Email)
        @Html.EditorFor(x => profile.Email)
        @Html.ValidationMessageFor(x => profile.Email)
    </div>
    <div>
        @Html.LabelFor(x => profile.Gender)
        @Html.DropDownListFor(x => profile.Gender, Html.GetEnumSelectList<Gender>())
        @Html.ValidationMessageFor(x => profile.Gender)
    </div>
    <button type="submit">@ProfileTranslations.SaveProfile</button>
}

Content property validation:

    [ContentType(
        GUID = "58fa84b7-73cd-4e4a-a3e3-07676d150f7c",
        DisplayName = "Footnote Block",
        GroupName = ContentGroupNames.Content)]
    [ContentIconImageUrl("block-footnote.png")]
    public class FootnoteBlock : BlockBase
    {
        [Display(Order = 10, Name = "Key")]
        [Required]
        [RegularExpression(
            @"^[A-Za-z]+[\w\-\:\.]*$", 
            ErrorMessageResourceType = typeof(LangFormats), 
            ErrorMessageResourceName = "FootnoteKeyValidationMessage")]
        public virtual string? Key { get; set; }

        [CultureSpecific]
        [Display(Order = 20, Name = "Footnotes")]
        public virtual XhtmlString? Text { get; set; }
    }