Module: SortableTreeController::Sort::ClassMethods

Defined in:
app/controllers/sortable_tree_controller.rb

Instance Method Summary collapse

Instance Method Details

#sortable_tree(class_name, options = {}) ⇒ Object 



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# File 'app/controllers/sortable_tree_controller.rb', line 13

def sortable_tree(class_name, options = {})
  define_method("sort") do
    resource_class = class_name.to_s.camelize.constantize

    # options
    #options[:tree] = true

    sorting_attribute = options.fetch(:sorting_attribute, 'pos')
    parent_method = options.fetch(:parent_method, 'parent')
    #options[:sorting_attribute] ||= 'pos'
    #options[:parent_method] ||= 'parent'

    records = params[:cat].to_unsafe_h.inject({}) do |res, (resource, parent_resource)|
      res[resource_class.find(resource)] = resource_class.find(parent_resource) rescue nil
      res
    end

    errors = []
    ActiveRecord::Base.transaction do
      records.each_with_index do |(record, parent_record), position|

        if sorting_attribute
          record.send "#{sorting_attribute}=", position
        end

        if parent_method
          record.send "#{parent_method}=", parent_record
        end

        errors << {record.id => record.errors} if !record.save
      end
    end

    #
    if errors.empty?
      head 200
    else
      render json: errors, status: 422
    end


  end
end