Module: ErpTechSvcs::Extensions::ActiveRecord::HasRelationalDynamicAttributes::SingletonMethods

Defined in:
lib/erp_tech_svcs/extensions/active_record/has_relational_dynamic_attributes.rb

Instance Method Summary collapse

Instance Method Details

#find_by_dynamic_attribute(value, options = {}) ⇒ Object 



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# File 'lib/erp_tech_svcs/extensions/active_record/has_relational_dynamic_attributes.rb', line 23

def find_by_dynamic_attribute(value, options={})
  arel_query = AttributeValue.where('attributed_record_type = ?', self.name)
                             .where(AttributeValue.arel_table[:value].matches("%#{value}%"))

  #if included_type_iids then find where types is equal to given types
  or_clauses = nil
  options[:included_type_iids].each do |type_iid|
    type = AttributeType.where('description = ? or internal_identifier = ?', type_iid, type_iid).first
    raise "Attribute Type '#{type_iid}' does not exist" if type.nil?
    or_clauses = if or_clauses.nil?
                   AttributeValue.arel_table[:attribute_type_id].eq(type.id)
                 else
                   or_clauses.or(AttributeValue.arel_table[:attribute_type_id].eq(type.id))
                 end
  end if options[:included_type_iids]

  #if excluded_type_iids then find where types is not equal to
  or_clauses = nil
  options[:excluded_type_iids].each do |type_iid|
    type = AttributeType.where('description = ? or internal_identifier = ?', type_iid, type_iid).first
    raise "Attribute Type '#{type_iid}' does not exist" if type.nil?
    or_clauses = if or_clauses.nil?
                   AttributeValue.arel_table[:attribute_type_id].eq(type.id).not
                 else
                   or_clauses.or(AttributeValue.arel_table[:attribute_type_id].eq(type.id).not)
                 end
  end if options[:excluded_type_iids]

  arel_query = arel_query.where(or_clauses) if or_clauses

  #get total_count if we need to return it
  total_count = arel_query.count('attributed_record_id') if options[:return_total_count]

  arel_query = arel_query.limit(options[:limit]) if options[:limit]
  arel_query = arel_query.offset(options[:offset]) if options[:offset]
  records = arel_query.all.collect(&:attributed_record)

  #return total_count if option passed
  options[:return_total_count] ? (return records, total_count) :  records
end