diff options
Diffstat (limited to 'activerecord/lib/active_record/attribute_set/builder.rb')
-rw-r--r-- | activerecord/lib/active_record/attribute_set/builder.rb | 62 |
1 files changed, 38 insertions, 24 deletions
diff --git a/activerecord/lib/active_record/attribute_set/builder.rb b/activerecord/lib/active_record/attribute_set/builder.rb index 3bd7c7997b..661f996e1a 100644 --- a/activerecord/lib/active_record/attribute_set/builder.rb +++ b/activerecord/lib/active_record/attribute_set/builder.rb @@ -1,13 +1,14 @@ -require 'active_record/attribute' +require "active_record/attribute" module ActiveRecord class AttributeSet # :nodoc: class Builder # :nodoc: - attr_reader :types, :always_initialized + attr_reader :types, :always_initialized, :default - def initialize(types, always_initialized = nil) + def initialize(types, always_initialized = nil, &default) @types = types @always_initialized = always_initialized + @default = default end def build_from_database(values = {}, additional_types = {}) @@ -15,21 +16,22 @@ module ActiveRecord values[always_initialized] = nil end - attributes = LazyAttributeHash.new(types, values, additional_types) + attributes = LazyAttributeHash.new(types, values, additional_types, &default) AttributeSet.new(attributes) end end end class LazyAttributeHash # :nodoc: - delegate :transform_values, :each_key, to: :materialize + delegate :transform_values, :each_key, :each_value, :fetch, to: :materialize - def initialize(types, values, additional_types) + def initialize(types, values, additional_types, &default) @types = types @values = values @additional_types = additional_types @materialized = false @delegate_hash = {} + @default = default || proc {} end def key?(key) @@ -76,33 +78,45 @@ module ActiveRecord end end + def marshal_dump + materialize + end + + def marshal_load(delegate_hash) + @delegate_hash = delegate_hash + @types = {} + @values = {} + @additional_types = {} + @materialized = true + end + protected - attr_reader :types, :values, :additional_types, :delegate_hash + attr_reader :types, :values, :additional_types, :delegate_hash, :default - def materialize - unless @materialized - values.each_key { |key| self[key] } - types.each_key { |key| self[key] } - unless frozen? - @materialized = true + def materialize + unless @materialized + values.each_key { |key| self[key] } + types.each_key { |key| self[key] } + unless frozen? + @materialized = true + end end + delegate_hash end - delegate_hash - end private - def assign_default_value(name) - type = additional_types.fetch(name, types[name]) - value_present = true - value = values.fetch(name) { value_present = false } + def assign_default_value(name) + type = additional_types.fetch(name, types[name]) + value_present = true + value = values.fetch(name) { value_present = false } - if value_present - delegate_hash[name] = Attribute.from_database(name, value, type) - elsif types.key?(name) - delegate_hash[name] = Attribute.uninitialized(name, type) + if value_present + delegate_hash[name] = Attribute.from_database(name, value, type) + elsif types.key?(name) + delegate_hash[name] = default.call(name) || Attribute.uninitialized(name, type) + end end - end end end |