Module: ExpressTemplates::Components::Forms::OptionSupport

Included in:
Radio, Select
Defined in:
lib/express_templates/components/forms/option_support.rb

Overview

Provides a form component with knowledge of any association on the field and an means of loading the collection for supplying options to the user.

Instance Method Summary collapse

Instance Method Details

#belongs_to_association ⇒ Object

Reflect on any association and return it if the association type is :belongs_to. Returns false if the association is not :belongs_to. Returns nil if there was a problem reflecting.



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# File 'lib/express_templates/components/forms/option_support.rb', line 11

def belongs_to_association
  # assumes the belongs_to association uses <name>_id
  reflection = resource_class.constantize.reflect_on_association(field_name.gsub(/_id$/, '').to_sym)
  if reflection && reflection.macro.eql?(:belongs_to)
    return reflection
  end
end

#related_collection ⇒ Object

Provide ActiveRecord code to load the associated collection as options for display.



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# File 'lib/express_templates/components/forms/option_support.rb', line 21

def related_collection
  reflection = belongs_to_association
  if reflection && !reflection.polymorphic?
    "#{reflection.klass}.all.select(:#{option_value_method}, :#{option_name_method}).order(:#{option_name_method})"
  end
end