Class: Handlebars::Helpers::CodeJavascript::AsJavascript

Inherits:
BaseSafeStringHelper show all
Defined in:
lib/handlebars/helpers/code_javascript/as_javascript.rb

Overview

take ruby object and write it out as Javascript notation

Instance Method Summary collapse

Methods inherited from BaseSafeStringHelper

#wrapper

Methods inherited from BaseHelper

#parse_json, #struct_to_hash, #tokenizer, #wrapper

Instance Method Details

#handlebars_helper ⇒ Object 



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# File 'lib/handlebars/helpers/code_javascript/as_javascript.rb', line 40

def handlebars_helper
  proc do |_context, value, format|
    # Handle optional: format
    format = nil if format.is_a?(V8::Object)
    format = format.to_sym if format.is_a?(String)

    wrapper(parse(value, format))
  end
end

#hash_to_javascript(value) ⇒ Object

Convert ruby hash to javascript notation

convert

{ "david": "cruwys" }

to

{ david: "cruwys" }



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# File 'lib/handlebars/helpers/code_javascript/as_javascript.rb', line 56

def hash_to_javascript(value)
  javascript = JSON.pretty_generate(value)

  rex = /"(?<name>\w*)":/

  javascript.gsub(rex) do |_|
    "#{$LAST_MATCH_INFO['name']}:"
  end
end

#parse(value, format) ⇒ String

Parse will take ruby object and write it out as Javascript notation

Examples:


puts AsJavascript.new.parse({david: "was here", why: ['reason1', 'reason2', 'reason3']})

{ david: "was here", why: ['reason1', 'reason2', 'reason3'] }

Parameters:

  • value (Object) —

    • object to be converted to Javascript notation string

Returns:

  • (String) —

    value as Javascript string



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# File 'lib/handlebars/helpers/code_javascript/as_javascript.rb', line 24

def parse(value, format)
  return '' if value.nil?

  format = :include_root_brace if format.nil?

  javascript = case value
               when Hash
                 hash_to_javascript(value)
               when OpenStruct, V8::Object, V8::Array
                 hash_to_javascript(parse_json(value))
               end

  javascript = remove_root_brace(javascript) if format == :exclude_root
  javascript
end

#remove_root_brace(javascript) ⇒ Object 



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# File 'lib/handlebars/helpers/code_javascript/as_javascript.rb', line 66

def remove_root_brace(javascript)
  javascript.sub('{', '').tap { |s| s.slice!(s.rindex('}')) }.strip
end