Ruby helpers

[justinperkins]

I just sort of jammed this in, but the idea is to expose ruby helpers to handlebars templates when being rendered on the server-side. Seemed like a nice feature to have available.

I also added a bit to the README for the note about custom configs and asset precompiling.

[le0pard]

Thanks for pull request. Does this helpers can used in both version of templates: client-side and server-side?

[justinperkins]

No it's just for the server-side, at least as-is in the example. However, you can code up your handlebars helpers (JS file) to conditionally use it. Given my example in the README, this would work:

Handlebars.registerHelper('formatDateTime', function(date, formatString){
  if (typeof rubyFormatDateTime == 'function'){
    // this is a custom ruby helper mixed into v8
    return rubyFormatDateTime(date, formatString)
  } else {
    // we are in pure javascript land, plan accordingly
  }
});

[le0pard]

Yep, but in this case you can use right now this JS helper in your server-side template:

https://github.com/railsware/sht_rails/blob/master/lib/sht_rails/handlebars.rb#L9-L17

In your solution its impossible :)

[justinperkins]

You use the JS helpers on the server-side in conjunction with the ruby helpers I've added. I'm using it in production right now (my branch) and it works great.

[le0pard]

Ok, thanks. I will review you pull request little later (my day is off) and will notify you, if found some problem :)

[le0pard]

I looked all this stuff (sorry for delay). I think we need add mix this ruby functions into v8 as handlebars helpers, so users can use this without additional work on client-side. What do you think, @justinperkins ?

[justinperkins]

I don't know. I like the idea of using pure-ruby from Handlebars as a replacement for JS lib functionality. I don't think everything has to exist in both environments but that's just me.

In my previous example about using Ruby's strftime, how would you implement that?

[le0pard]

In my previous example about using Ruby's strftime, how would you implement that?

I will use JS helpers with some js libs, because its shared in ruby templates also.

https://github.com/railsware/sht_rails/blob/master/lib/sht_rails/handlebars.rb#L10-L13

What is why I thinking what it solve your problem, but not good solution for library - main point of this library, what this templates should render on client side and server side in the same html.