Activities of "aaron"

Related commit: https://github.com/aspnetzero/aspnet-zero-core/commit/a0406c62c0afe8641acd0fc9f3a15697e5de1826

The L helper is not defined for repositories.

You can inject ILocalizationManager and define it:

private string L(string name)
{
    return _localizationManager.GetString(AbpZeroTemplateConsts.LocalizationSourceName, name);
}

Concurrency control is usually about reading or writing the same record (Optimistic Locking: #4146@6c148c17-0f2f-42c9-a386-dd70810dd348).

In your case, you are inserting a new record. Can you show related code on how you determine and set the next "code"?

Looks like you need to implement a singleton lock.

The error messages are pretty clear.

MyAppRepositoryBase does not have a public default constructor and could not be instantiated. Constructor on MyAppRepositoryBase not found.

public class MyAppRepositoryBase<TEntity, TPrimaryKey> : EfCoreRepositoryBase<MyAppDbContext, TEntity, TPrimaryKey>
    where TEntity : class, IEntity<TPrimaryKey>
{
    public MyAppRepositoryBase(IDbContextProvider<MyAppDbContext> dbContextProvider)
        : base(dbContextProvider)
    {
    }
}

public class MyAppRepositoryBase<TEntity> : MyAppRepositoryBase<TEntity, int>
    where TEntity : class, IEntity<int>
{
    public MyAppRepositoryBase(IDbContextProvider<MyAppDbContext> dbContextProvider)
        : base(dbContextProvider)
    {
    }
}

As explained above, EntityFrameworkCore requires eager-loading.

Try this:

ProxyHelper.UnProxy(_announceRepository).As<EfRepositoryBase<MyProjectDbContext, AnnouncementEntity>>().Table.Attach(announce);

Add this using directive:

using Abp.Reflection;

Why not localize on server side?

throw new UserFriendlyException(L("Test Code Already Exist"));

You can override abp.message.error:

var error = abp && abp.message && abp.message.error;
if (error) {
    abp.message.error = function (message, title) {
        message = localize(message);
        title = localize(title);
        return error(message, title);
    };
}

function localize(name) {
    return "[" + name + "]";
}

Can you put a breakpoint and check the actual type of _announceRepository?

Is your DbContext actually called MyDbContext?