prepending Hyrax::Forms::CollectionForm example

collection_form.rb

# Based on the Module#prepend pattern in ruby which is used in some Hyrax.
# Uses the to_prepare Rails hook in application.rb to inject this module to override Hyrax::Forms::CollectionForm module
module PrependedForms::CollectionForm
  module ClassMethods
    # Override Hyrax::Forms::CollectionForm.terms method
    # self.terms = [:parent_agency, :title, :acronym, :description, :contact_email, :contact_phone,
    #               :location_city, :location_state, :homepage_url, :is_division]
    def terms
      [:title, :acronym, :description, :contact_email, :contact_phone,
       :location_city, :location_state, :homepage_url, :thumbnail_id]
    end

    # Override Hyrax::Forms::CollectionForm.multiple? method
    def multiple?(field)
      if [:title, :description].include? field.to_sym
        false
      else
        super
      end
    end

    # Override Hyrax::Forms::CollectionForm.sanitize_params method
    def sanitize_params(_)
      attrs = super
      attrs[:title] = Array(attrs[:title]) if attrs[:title]
      attrs[:description] = Array(attrs[:description]) if attrs[:description]
      attrs
    end
  end

  def self.prepended(base)
    class << base
      prepend ClassMethods
    end
  end

  delegate :creator, :acronym, :contact_email, :contact_phone, :location_city, :location_state, :homepage_url, to: :model

  # Override Hyrax::Forms::CollectionForm#primary_terms method
  # Terms that appear within the accordion.  Show all terms without an additional metadata button.
  def primary_terms
    if CollectionTypeService.organization? collection
      [:title,
       :acronym,
       :description,
       :contact_email,
       :contact_phone,
       :location_city,
       :location_state,
       :homepage_url]
    else
      [:title,
       :description]
    end
  end

  # Override Hyrax::Forms::CollectionForm#secondary_terms method
  # Terms that appear within the accordion.  All metadata is considered primary.  No additional metadata.
  def secondary_terms
    []
  end

  # Override Hyrax::Forms::CollectionForm#multiple? method
  def multiple?(field)
    if [:title, :description].include? field.to_sym
      false
    else
      super
    end
  end

  # Override Hyrax::Forms::CollectionForm#title method
  def title
    super.first || ""
  end

  # Override Hyrax::Forms::CollectionForm#description method
  def description
    super.first || ""
  end
end