Module: ParamsReady::Extensions::Registry

Included in:
AbstractBuilder, Parameter::ValueParameterBuilder, Query::AbstractPredicateBuilder, Query::PredicateRegistry, Value::Constraint
Defined in:
lib/params_ready/extensions/registry.rb

Instance Method Summary collapse

Instance Method Details

#human_string(string) ⇒ Object 



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# 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) ⇒ Object 



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# 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