Several issues on Mac OSX, Mono

[neilyoung]

The db init on Mac OSX with Mono seems to be a bit different:

1. No SQL server locally, instead SQLite. Requires the addition of

"EntityFramework.SQLite": "7.0.0-rc1-final",
"EntityFramework.Sqlite.Design": "7.0.0-rc1-final",

to project.json.

2. appsettings.json must look like this, if SQLite is used (just the Data property is of interest):

{
  "Logging": {
    "IncludeScopes": false,
    "LogLevel": {
      "Default": "Verbose",
      "System": "Information",
      "Microsoft": "Information"
    }
  },
  "Data": {
    "PhotoGalleryConnection": {
      "ConnectionString": "Data Source=./webapp.db"
    }
  }
}

and a ./webapp.db must exist in the root (not sure, at least I copied it to there from a project scaffolded with yo aspnet). After that "dnx ef database update" will work

3. Additionally replace SQL Server setup in ConfigureServices with an SQLite setup

services.AddEntityFramework()
     .AddSqlite()
     .AddDbContext<PhotoGalleryContext>(options =>
         options.UseSqlite(Configuration["Data:PhotoGalleryConnection:ConnectionString"]));

4. Then there is an issue in DbInitializer.cs

string[] _images = Directory.GetFiles(Path.Combine(imagesPath, "wwwroot\\images"));

is not portable and leads to failures like this:

Application startup exception: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.IO.DirectoryNotFoundException: Directory '/Users/decades/Angular2/aspnet5-angular2-typescript/src/PhotoGallery/wwwroot\images' not found.

Could hotfix it by

string[] _images = Directory.GetFiles("./wwwroot/images"/*Path.Combine(imagesPath, "wwwroot/images")*/);

Then the app did start at least and seemed to work.