Class: JsRailsRoutes::Routes

Inherits:
Object
  • Object
show all
Defined in:
lib/js-rails-routes.rb

Instance Method Summary collapse

Constructor Details

#initialize(text) ⇒ Routes

Returns a new instance of Routes.



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# File 'lib/js-rails-routes.rb', line 6

def initialize(text)
  @text = text      
end

Instance Method Details

#create_javascript(with_link_to = true) ⇒ Object 



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# File 'lib/js-rails-routes.rb', line 10

def create_javascript(with_link_to = true)
  result = "// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n//\n// This file is auto-generated by js-rails-routes \#{VERSION}\n//\n// DO NOT EDIT BY HAND!!\n//\n   \n"

  if with_link_to
    result += generate_link_to
  end


  lines = @text.split("\n")
  
  lines.each do |line|
    # clear leading whitespace
    line.sub!(/^\s+/, '')
    (name, method, format, action) = line.split(/\s+/)
    
    # action will only contain something if there were at least four segments
    # to split.  This is a little ass-backwards.  Really when action contains no
    # non-whitespace, what it really means is that name contained no non-whitespace.
    if action =~ /\S/
      # Get rid of the (.:format) business at the end of each format
      format.gsub!(/\(.*\)/, '')

      # Get rid of the leading slash
      format.sub!(/^\//, '')
      
      # Split it into its parts
      parts = format.split("/")
      
      args = []
      parts.each do |part|
        if part =~ /^:/
          args.push part.sub(/^:/, '')
        end
      end
      
      if args.empty?
        # This is the easy case.  There are no parameters we need to deal with, just
        # a simple path
        
        result += "\nvar \#{name}_path = function() {\n  return \"/\#{format}\";\n}\n"
      else
        # The trickier case.  We want to accept values as args.  The first arg could
        # be a hash object, containing all the information, or we could have several
        # primitive arguments that appear in the order that they do in the format
        result += "\nvar \#{name}_path = function(\#{ args.join(\", \") }) {\n  if (\#{args[0]} instanceof Object) {\n"
        result += '    return '
        components = []
        parts.each do |part|
          components.push '"/"'
          if part =~ /^:/
            components.push args[0] + '["' + part.sub(/^:/, '') + '"]'
          else
            components.push '"' + part + '"'
          end
        end
        result += components.join(" + ") + ";\n"
        result += "  } else {\n"

        result += '    return '
        components = []
        parts.each do |part|
          components.push '"/"'
          if part =~ /^:/
            components.push part.sub(/^:/, '')
          else
            components.push '"' + part + '"'
          end
        end

        result += components.join(' + ') + ";\n"
        result += "  }\n}\n"
      end
    end
  end
  
  result
end

#generate_link_to ⇒ Object 



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# File 'lib/js-rails-routes.rb', line 111

def generate_link_to
  # This is a fairly silly method.
  # It just regurgitates javascript I've written elsewhere by hand.
  
  File.read File.expand_path("../js-rails-routes/js/link_to.js", __FILE__)
end