Class: Wallaby::Guesser

Inherits:
Object
  • Object
show all
Defined in:
lib/wallaby/guesser.rb

Overview

Guess the associated class for give class

Constant Summary collapse

SUFFIX =

:no_doc:

/(Controller|Decorator|Servicer|Authorizer|Paginator)$/.freeze

Class Method Summary collapse

Class Method Details

.class_for(class_name, options = {}, &block) ⇒ Class?

Find out the first demodulized class constant for the give class name. For example, if given class name is Admin::Order::ItemsController, then it will try to constantize the following demodulized class names and return the first one that is successfully constantized:

  • Admin::Order::Item

  • Order::Item

  • Item

Parameters:

  • class_name (String)
  • options (Hash) (defaults to: {})

Returns:

  • (Class) —

    found associated class

  • (nil) —

    if not found



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# File 'lib/wallaby/guesser.rb', line 21

def class_for(class_name, options = {}, &block)
  suffix = options[:suffix] || EMPTY_STRING
  replacement = options[:replacement] || SUFFIX
  denamespace = options.key?(:denamespace) ? options[:denamespace] : true
  base_name = class_name.gsub(replacement, EMPTY_STRING).singularize << suffix
  possible_class_from(base_name, denamespace: denamespace, &block)
end

.possible_class_from(class_name, denamespace: false) ⇒ Object 



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# File 'lib/wallaby/guesser.rb', line 29

def possible_class_from(class_name, denamespace: false)
  target = nil
  parts = denamespace ? class_name.split(COLONS) : [class_name]
  parts.each_with_index.find do |_, index|
    klass = Classifier.to_class(parts[index..].join(COLONS))
    next unless klass
    # additional checking, the given block should return true to continue
    next if block_given? && !yield(klass)

    target = klass
  end

  target
end