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Contents
module Fae
module Sortable
extend ActiveSupport::Concern
module ClassMethods
def fae_sort(params)
return all unless params.present? && params[:sort_by].present?
attr_parts = params[:sort_by].split('.')
if attr_parts.length == 1
order_by_model_attr(attr_parts.first, sort_direction(params[:sort_direction]))
else
order_by_association_attr(attr_parts.first.to_sym, attr_parts.second, sort_direction(params[:sort_direction]))
end
end
private
def order_by_model_attr(sort_by, direction)
return all unless attribute_exists(self, sort_by)
unscope(:order).order("#{table_name}.#{sort_by} #{direction}")
end
def order_by_association_attr(association, sort_by, direction)
assoc_index = reflect_on_all_associations.map(&:name).index(association)
return all unless assoc_index
order_klass = reflect_on_all_associations[assoc_index].klass
return all unless attribute_exists(order_klass, sort_by)
includes(association).unscope(:order).order("#{order_klass.table_name}.#{sort_by} #{direction}")
end
def sort_direction(direction_from_params)
return 'asc' if direction_from_params.blank?
direction = direction_from_params.downcase
# verify the direction from parms are legit to protect against injection
return %w(asc desc).include?(direction) ? direction : 'asc'
end
def attribute_exists(klass, attribute)
klass.column_names.include? attribute
end
end
end
end
Version data entries
12 entries across 12 versions & 2 rubygems