module ParamsReady::Extensions::Registry

Public Instance Methods

human_string(string) click to toggle source
# File lib/params_ready/extensions/registry.rb, line 39
def human_string(string)
  string.to_s.gsub("_", " ")
end
registry(registry_name, name_method: nil, as: nil, getter: false, &block) click to toggle source
# File lib/params_ready/extensions/registry.rb, line 4
def registry(registry_name, name_method: nil, as: nil, getter: false, &block)
  class_variable_name = "@@#{registry_name}"

  class_variable_set class_variable_name, {}
  if as
    if name_method.nil?
      define_singleton_method "register_#{as}" do |name, entry|
        registry = class_variable_get class_variable_name
        raise ParamsReadyError, "Name '#{name}' already taken for '#{human_string(as)}'" if registry.key? name
        instance_exec name, entry, &block unless block.nil?
        registry[name] = entry
      end
    else
      define_singleton_method "register_#{as}" do |entry|
        name = entry.send name_method
        registry = class_variable_get class_variable_name
        raise ParamsReadyError, "Name '#{name}' already taken for '#{human_string(as)}'" if registry.key? name
        instance_exec name, entry, &block unless block.nil?
        registry[name] = entry
      end
    end
  end
  if getter
    define_singleton_method as do |name|
      registry = class_variable_get class_variable_name
      raise ParamsReadyError, "Name '#{name}' not found in #{human_string(registry_name)}" unless registry.key? name
      registry[name]
    end
  end
  define_singleton_method "has_#{as}?" do |name|
    registry = class_variable_get class_variable_name
    registry.key? name
  end
end