ScaffoldingDesignTimeServices not loaded (duplicate of #31)

[newsoftinc]

Running the latest nuget on a new .net core projet.

Running SDK :
PM> dotnet --version
2.1.403

Services class :

`using System;
using System.IO;
using Microsoft.EntityFrameworkCore.Design;
using Microsoft.Extensions.DependencyInjection;

namespace EFCoreScaffold
{
public class ScaffoldingDesignTimeServices : IDesignTimeServices
{
public void ConfigureDesignTimeServices(IServiceCollection services)
{
// Generate both context and entitites
var options = ReverseEngineerOptions.DbContextAndEntities;

        // Register Handlebars helper
        var myHelper = (helperName: "my-helper", helperFunction: (Action<TextWriter, object, object[]>)MyHbsHelper);

        // Add Handlebars scaffolding templates
        services.AddHandlebarsScaffolding(options);

        // Register Handlebars helper
        services.AddHandlebarsHelpers(myHelper);
    }

    // Sample Handlebars helper
    void MyHbsHelper(TextWriter writer, object context, object[] parameters)
    {
        writer.Write("// My Handlebars Helper");
    }
}

}
`
Class.hbs (Generated by first run of dotnet ef dbcontext scaffold

`{{> imports}}
{{my-helper}}
namespace {{namespace}}
{
{{#if class-annotation}}
{{{class-annotation}}}
{{/if}}

//This is a test !
public partial class {{class}} {{my-helper}}
{
{{{> constructor}}}
{{> properties}}
}
}
`
The comment //This is a test ! , appears, but the helper is not called.

[newsoftinc]

Hello, I can also confirm that the debugger steps in the ScaffoldingDesignTimeServices by attaching the debugger to dotnet executable. Could you give us a hint ? I need handlebars for my migration from ef6 to core. I can debug the issue. It seems like the helper is not detected / invoked, because debugger never step in the helper function. Where does the helpers get resolved, when the handlebar parser see finds a custom tag?

[newsoftinc]

Ok so your wrapping method, services.AddHandlebarsHelpers(myHelper) , over HandlebarsDotNet.Handlebars.RegisterHelper , does not register the templates in handlebar.

Adding nuget ref to handlebar, and directly add the template, fix the issue.
HandlebarsDotNet.Handlebars.RegisterHelper("my-helper", MyHbsHelper);

Why do you make additionnal plumbing over the native call? Only plus I see is to avoid adding references to handlerbar in target projects.

Anyways, i'm not sure where to fix this, but now you know the problem.

[tonysneed]

This appears to be a duplicate of #31, which as been fixed by #42. @newsoftinc Please re-open this issue if this is not the case.

[tonysneed]

@newsoftinc This has been fixed in v1.7.0.