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Diffstat (limited to 'activerecord/lib/active_record/attributes/typecasting.rb')
-rw-r--r-- | activerecord/lib/active_record/attributes/typecasting.rb | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/activerecord/lib/active_record/attributes/typecasting.rb b/activerecord/lib/active_record/attributes/typecasting.rb deleted file mode 100644 index 56c32f9895..0000000000 --- a/activerecord/lib/active_record/attributes/typecasting.rb +++ /dev/null @@ -1,117 +0,0 @@ -module ActiveRecord - module Attributes - module Typecasting - # Typecasts values during access based on their key mapping to a Type. - # - # Example: - # class Attributes < Hash - # include Typecasting - # end - # - # attributes = Attributes.new - # attributes.types['comments_count'] = Type::Integer - # attributes['comments_count'] = '5' - # - # attributes['comments_count'] - # => 5 - # - # To support keys not mapped to a typecaster, add a default to types. - # attributes.types.default = Type::Unknown - # attributes['age'] = '25' - # attributes['age'] - # => '25' - # - # A valid type supports #cast, #precast, #boolean, and #appendable? methods. - # - def [](key) - value = super(key) - typecast_read(key, value) - end - - def []=(key, value) - super(key, typecast_write(key, value)) - end - - def to_h - hash = {} - hash.merge!(self) - hash - end - - def dup # :nodoc: - copy = super - copy.types = types.dup - copy - end - - # Provides a duplicate with typecasting disabled. - # - # Example: - # attributes = Attributes.new - # attributes.types['comments_count'] = Type::Integer - # attributes['comments_count'] = '5' - # - # attributes.without_typecast['comments_count'] - # => '5' - # - def without_typecast - dup.without_typecast! - end - - def without_typecast! - types.clear - self - end - - def typecast! - keys.each { |key| self[key] = self[key] } - self - end - - # Check if key has a value that typecasts to true. - # - # attributes = Attributes.new - # attributes.types['comments_count'] = Type::Integer - # - # attributes['comments_count'] = 0 - # attributes.has?('comments_count') - # => false - # - # attributes['comments_count'] = 1 - # attributes.has?('comments_count') - # => true - # - def has?(key) - value = self[key] - boolean_typecast(key, value) - end - - def types - @types ||= {} - end - - protected - - def types=(other_types) - @types = other_types - end - - def boolean_typecast(key, value) - value ? types[key].boolean(value) : false - end - - def typecast_read(key, value) - type = types[key] - value = type.cast(value) - self[key] = value if type.appendable? && !frozen? - - value - end - - def typecast_write(key, value) - types[key].precast(value) - end - - end - end -end |