Class: AttrJson::SerializationCoderFromType

Inherits:
Object
  • Object
show all
Defined in:
lib/attr_json/serialization_coder_from_type.rb

Overview

A little wrapper to provide an object that provides #dump and #load method for use as a coder second-argument for ActiveRecord Serialization, that simply delegates to #serialize and #deserialize from a ActiveModel::Type object.

Created to be used with an AttrJson::Model type (AttrJson::Type::Model), but hypothetically could be a shim from anything with serialize/deserialize to dump/load instead.

class ValueModel include AttrJson::Model attr_json :some_string, :string end

class SomeModel < ApplicationRecord serialize :some_json_column, ValueModel.to_serialize_coder end

Note when used with an AttrJson::Model, it will dump/load from a HASH, not a string. It assumes it's writing to a Json(b) column that wants/provides hashes, not strings.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type) ⇒ SerializationCoderFromType

Returns a new instance of SerializationCoderFromType.



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# File 'lib/attr_json/serialization_coder_from_type.rb', line 26

def initialize(type)
  @type = type
end

Instance Attribute Details

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/attr_json/serialization_coder_from_type.rb', line 25

def type
  @type
end

Instance Method Details

#dump(value) ⇒ Object

Dump and load methods to support ActiveRecord Serialization too.



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# File 'lib/attr_json/serialization_coder_from_type.rb', line 32

def dump(value)
  type.serialize(value)
end

#load(value) ⇒ Object

Dump and load methods to support ActiveRecord Serialization too. https://api.rubyonrails.org/classes/ActiveRecord/AttributeMethods/Serialization/ClassMethods.html



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# File 'lib/attr_json/serialization_coder_from_type.rb', line 38

def load(value)
  type.deserialize(value)
end