How to migrate dataset for Plug-In #7800 | Support

niall created 2 months ago

ABP Framework version: v8.2.2
UI Type: MVC
Database System: EF Core (SQL Server, Oracle, MySQL, PostgreSQL, etc..)
Tiered (for MVC) or Auth Server Separated (for Angular): yes
Exception message and full stack trace:
Steps to reproduce the issue:

I created a plugin with follow command:

abo new My.Plugin -t module

when i run AuthServer or Web.Unified，throw a exception, tip need create dataset. So i need run 'Update-Database' to create it.

My question is how to auto create database when plugin is run?

I found some document at https://abp.io/docs/latest/framework/architecture/modularity/plugin-modules, like this:

The Plugin may check if the database tables does exists and create the tables on the application startup or migrate them if the plug-in has been updated and requires some schema changes. You can use EF Core's migration API to do that.

But how to implement it，Is there a example?

Thanks~

4 Answer(s)

maliming created 2 months ago

Support Team Fullstack Developer

You can get the dbcontext migrate and seed the data in OnPreApplicationInitializationAsync method of your module.

public async override Task OnPreApplicationInitializationAsync(ApplicationInitializationContext context)
{
    using var uow = context.ServiceProvider.GetRequiredService<IUnitOfWorkManager>().Begin();
    {
        var dbContext = await context.ServiceProvider.GetRequiredService<IDbContextProvider<ServerDbContext>>().GetDbContextAsync();
        if ((await dbContext.Database.GetPendingMigrationsAsync()).Any())
        {
            await dbContext.Database.MigrateAsync();
        }

        await uow.CompleteAsync();
    }

    await context.ServiceProvider
        .GetRequiredService<IDataSeeder>()
        .SeedAsync();
}

niall created 2 months ago

I added your codes, got a exception:

[11:23:24 FTL] Host terminated unexpectedly!
Volo.Abp.AbpInitializationException: An error occurred during the initialize Volo.Abp.Modularity.OnPreApplicationInitializationModuleLifecycleContributor phase of the module XTC.License.LicenseAuthServerModule, XTC.License.AuthServer, Version=0.1.0.0, Culture=neutral, PublicKeyToken=null: An exception was thrown while activating XTC.License.EntityFrameworkCore.AuthServerDbContext.. See the inner exception for details.
 ---> Autofac.Core.DependencyResolutionException: An exception was thrown while activating XTC.License.EntityFrameworkCore.AuthServerDbContext.
 ---> Autofac.Core.DependencyResolutionException: None of the constructors found on type 'XTC.License.EntityFrameworkCore.AuthServerDbContext' can be invoked with the available services and parameters:
Cannot resolve parameter 'Microsoft.EntityFrameworkCore.DbContextOptions`1[XTC.License.EntityFrameworkCore.AuthServerDbContext] options' of constructor 'Void .ctor(Microsoft.EntityFrameworkCore.DbContextOptions`1[XTC.License.EntityFrameworkCore.AuthServerDbContext])'.

See https://autofac.rtfd.io/help/no-constructors-bindable for more info.
   at Autofac.Core.Activators.Reflection.ReflectionActivator.<>c__DisplayClass14_0.<UseSingleConstructorActivation>b__0(ResolveRequestContext context, Action`1 next)
   at Autofac.Core.Resolving.Middleware.DelegateMiddleware.Execute(ResolveRequestContext context, Action`1 next)
   at Autofac.Core.Resolving.Pipeline.ResolvePipelineBuilder.<>c__DisplayClass14_0.<BuildPipeline>b__1(ResolveRequestContext context)
   at Autofac.Core.Resolving.Middleware.DisposalTrackingMiddleware.Execute(ResolveRequestContext context, Action`1 next)
   at Autofac.Core.Resolving.Pipeline.ResolvePipelineBuilder.&lt;&gt;c__DisplayClass14_0.&lt;BuildPipeline&gt;b__1(ResolveRequestContext context)
   at Autofac.Builder.RegistrationBuilder`3.<>c__DisplayClass41_0.<PropertiesAutowired>b__0(ResolveRequestContext context, Action`1 next)

So i modify the code to var dbContext = factory.CreateDbContext(null);, like this:

    public async override Task OnPreApplicationInitializationAsync(ApplicationInitializationContext context)
    {
        using var uow = context.ServiceProvider.GetRequiredService&lt;IUnitOfWorkManager&gt;().Begin();
        {
            var factory = new AuthServerDbContextFactory();
            var dbContext = factory.CreateDbContext(null);
            //var dbContext = await context.ServiceProvider.GetRequiredService&lt;IDbContextProvider&lt;AuthServerDbContext&gt;>().GetDbContextAsync();
            if ((await dbContext.Database.GetPendingMigrationsAsync()).Any())
            {
                await dbContext.Database.MigrateAsync();
            }

            await uow.CompleteAsync();
        }
    }

now everything is ok, is my modify right?

0

niall created 2 months ago

I resolved it, Thanks!
0

maliming created 2 months ago
Support Team Fullstack Developer

Great!

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