how I can add helper ?

[rjurado01]

Hello,

I want to do this:

Handlebars.registerHelper('method_label', function(method) {
  if( method == "a")
    return "label1"
  else
    return "label2"
});

<span class={{method_label method}}>Hi</span>

how can I add helper like this ?

[rjurado01]

I found the response in tests:

handlebars = Handlebars::Context.new
handlebars.register_helper('method_label') do |this, context, block|
    if  block.call(context) 
        'label1'
    else
        'label2'
    end
end

<span class="{{#method_label context}}{{method}}{{/method_label}}">  // <span class="label1">

It create span with class = context.method

Please, update documentation with it.

[cowboyd]

please see README section on helpers https://github.com/cowboyd/handlebars.rb#block-helpers thanks!

[rjurado01]

Please update README, now instead of 'call' it is necesary use 'fn'

...
block.fn(context) 
...

[justinperkins]

The documentation is out-of-date and does not explain how to write block helpers with "else" conditions, which is just what this issue is created for.

[justinperkins]

Here we go, with a common use-case

handlebars = Handlebars::Context.new
handlebars.register_helper(:ifComparison) do |context, arg1, arg2, block|
  if arg1 == arg2
    block.fn(context)
  else
    block.inverse(context)
  end

[rjurado01]

Thank you.

[cowboyd]

@drinor @justinperkins thanks for keeping after this. Does 31bf410 help?

[justinperkins]

Lookin good, thanks for updating Charles.