Class: Rad::Router::AliasRouter

Inherits:
Object
  • Object
show all
Includes:
AbstractRouter
Defined in:
lib/rad/router/_alias_router.rb

Defined Under Namespace

Classes: TreeHash

Instance Method Summary collapse

Constructor Details

#initialize ⇒ AliasRouter

Returns a new instance of AliasRouter.



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# File 'lib/rad/router/_alias_router.rb', line 8

def initialize
  @route_methods, @paths, @classes = {}, TreeHash.new, {}
end

Instance Method Details

#add(als, options = {}) ⇒ Object 



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# File 'lib/rad/router/_alias_router.rb', line 12

def add als, options = {}
  # parsing options
  # als, options = als.to_s, options.to_openobject
  options.validate_options! :class_name, :method, :url_root, :prefix

  als = als.to_s
  als.must =~ /^\//
  class_name = options.delete(:class_name) || raise("no class name!")
  class_name.must_be.a String
  method = options.delete(:method) || raise("no method!")
  method = method.must_be.a Symbol
  url_root = parse_url_root options
  prefix = parse_prefix options

  raise "you can't use '/' alias with :url_root!" if als == '/' and url_root

  # logic
  meta = Meta.new
  meta.merge!(
    class_name: class_name,
    method: method,
    path: als,
    url_root: url_root,
    prefix: prefix
  )

  route_methods["#{als[1..-1]}_path"] = meta

  (classes[class_name] ||= {})[method] = meta


  parts = als[1..-1].split('/')
  parts << '' if parts.empty?

  tree_iterator = paths
  parts.reverse.each do |part|
    tree_iterator = (tree_iterator[part] ||= TreeHash.new)
    raise "alias '#{als}' conflicted with another alias ('#{tree_iterator.meta[:path]}')!" if tree_iterator.meta
  end
  tree_iterator.meta = meta
end

#decode(path, params) ⇒ Object 



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# File 'lib/rad/router/_alias_router.rb', line 71

def decode path, params
  parts = path[1..-1].split('/')
  parts << '' if parts.empty?

  tree_iterator = paths

  # checking for first part
  part = parts.pop
  tree_iterator = tree_iterator[part]
  return nil unless tree_iterator

  # checking for exact match
  while part = parts.pop
    tmp = tree_iterator[part]
    unless tmp
      parts << part
      break
    end
    tree_iterator = tmp
  end

  meta = tree_iterator.meta

  # url_root
  url_root = meta[:url_root]
  return nil if url_root and "/#{parts.shift}" != url_root

  # prefix
  prefix = meta[:prefix]
  decode_prefix_params! parts, params, prefix if prefix

  return meta.get_class, meta[:method], params
end

#encode(klass, method, params) ⇒ Object 



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# File 'lib/rad/router/_alias_router.rb', line 54

def encode klass, method, params
  if meta = classes[klass.name].try(:[], method)
    path = meta[:path]

    # prefix
    prefix = meta[:prefix]
    path = encode_prefix_params! path, params, prefix if prefix

    url_root = meta[:url_root]
    params[:url_root] = url_root if url_root

    return path, params
  else
    nil
  end
end

#encode_method(route_method, has_id) ⇒ Object 



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# File 'lib/rad/router/_alias_router.rb', line 105

def encode_method route_method, has_id
  if meta = route_methods[route_method]
    return meta.get_class, meta[:method]
  else
    nil
  end
end