Identityserver4.admin: Migrations with Npgsql

[knepe]

I cloned your project and change to use Npgsql instead in RegisterDbContexts. When I try to add migrations I get this error:
Method 'Clone' in type 'Microsoft.EntityFrameworkCore.Infrastructure.Internal.NpgsqlOptionsExtension' from assembly 'Npgsql.EntityFrameworkCore.PostgreSQL, Version=1.1.1.0, Culture=neutral, PublicKeyToken=5d8b90d52f46fda7' does not have an implementation.

Any suggestion of what I can do to fix this?

[xmichaelx]

Make sure you've installed both Npgsql.EntityFrameworkCore.PostgreSQL and Npgsql.EntityFrameworkCore.PostgreSQL.Design. I remember having this issue once and uninstalling postgre dependencies and installing them again (with .Design) helped.

[knepe]

Thanks it worked when adding Npgsql.EntityFrameworkCore.PostgreSQL and not only Npgsql.EntityFrameworkCore.PostgreSQL.Design
Maybe update the docs to also include Npgsql.EntityFrameworkCore.PostgreSQL here https://github.com/skoruba/IdentityServer4.Admin/blob/master/docs/EFMigration.md#postgresql ?

[TomasHubelbauer]

@knepe Feel free to send a PR our way. :-) I agree that should be added to the docs.

[xmichaelx]

167 Added pull request for this one.