Module: RailsStuff::ResourcesController::ResourceHelper

Defined in:
lib/rails_stuff/resources_controller/resource_helper.rb

Overview

Defines resource helper and finder method.

Instance Method Summary collapse

Instance Method Details

#resource_helper(name, param: nil, source: nil, **options) ⇒ Object

Defines protected helper method. Ex. for ‘:user`

helper_method :user

def user
  @user ||= User.find params[:user_id]
end

#### Options

  • ‘source` - class name or Proc returning relation, default to `resource_name.classify`.

  • ‘param` - param name, default to `resource_name.foreign_key`

rubocop:disable CyclomaticComplexity, PerceivedComplexity, AbcSize



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# File 'lib/rails_stuff/resources_controller/resource_helper.rb', line 19

def resource_helper(name, param: nil, source: nil, **options)
  RailsStuff.deprecation_07.warn('use :source instead of :class') if options.key?(:class)

  param ||= name.to_s.foreign_key.to_sym
  define_method("#{name}?") { params.key?(param) }

  ivar = :"@#{name}"
  source ||= options[:class] || name.to_s.classify
  if source.is_a?(Proc)
    define_method(name) do
      instance_variable_get(ivar) ||
        instance_variable_set(ivar, instance_exec(&source).find(params[param]))
    end
  else
    source = Object.const_get(source) unless source.is_a?(Class)
    define_method(name) do
      instance_variable_get(ivar) ||
        instance_variable_set(ivar, source.find(params[param]))
    end
  end

  helper_method name, :"#{name}?"
  protected name, :"#{name}?"
end