method

find_by

v7.1.3.4 - Show latest stable - 0 notes - Class: ClassMethods

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1
2.3.8
3.0.0
3.0.9
3.1.0
3.2.1
3.2.8
3.2.13
4.0.2
4.1.8
4.2.1 (0)
4.2.7 (0)
4.2.9 (0)
5.0.0.1 (0)
5.1.7 (0)
5.2.3 (0)
6.0.0 (0)
6.1.3.1 (0)
6.1.7.7 (0)
7.0.0 (0)
7.1.3.2 (0)
7.1.3.4 (0)
What's this?

find_by(*args) public

No documentation

This method has no description. You can help the Ruby on Rails community by adding new notes.

# File activerecord/lib/active_record/core.rb, line 256
      def find_by(*args) # :nodoc:
        return super if scope_attributes?

        hash = args.first
        return super unless Hash === hash

        hash = hash.each_with_object({}) do |(key, value), h|
          key = key.to_s
          key = attribute_aliases[key] || key

          return super if reflect_on_aggregation(key)

          reflection = _reflect_on_association(key)

          if !reflection
            value = value.id if value.respond_to?(:id)
          elsif reflection.belongs_to? && !reflection.polymorphic?
            key = reflection.join_foreign_key
            pkey = reflection.join_primary_key

            if pkey.is_a?(Array)
              if pkey.all? { |attribute| value.respond_to?(attribute) }
                value = pkey.map do |attribute|
                  if attribute == "id"
                    value.id_value
                  else
                    value.public_send(attribute)
                  end
                end
                composite_primary_key = true
              end
            else
              value = value.public_send(pkey) if value.respond_to?(pkey)
            end
          end

          if !composite_primary_key &&
            (!columns_hash.key?(key) || StatementCache.unsupported_value?(value))
            return super
          end

          h[key] = value
        end

        cached_find_by(hash.keys, hash.values)
      end

find_by

Related methods

No documentation