Class: AssociateJsonb::WithStoreAttribute::InstanceMethodsOnActivation

Inherits:
Module
  • Object
show all
Defined in:
lib/associate_jsonb/with_store_attribute.rb

Instance Method Summary collapse

Constructor Details

#initialize(mixin, store, attribute, key, is_array) ⇒ InstanceMethodsOnActivation

Returns a new instance of InstanceMethodsOnActivation.



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# File 'lib/associate_jsonb/with_store_attribute.rb', line 118

def initialize(mixin, store, attribute, key, is_array)
  is_array = !!(is_array && attribute.to_s =~ /_ids$/)

  array_or_attr = ->(value) {
    is_array \
      ? %Q(Array(#{value})) \
      : %Q(#{value})
  }

  on_store_change = "_write_attribute(:#{attribute}, #{array_or_attr.call %Q(#{store}["#{key}"])})"
  on_attr_change = "super(#{array_or_attr.call %Q(given)})"

  if is_array
    mixin.class_eval <<~CODE, __FILE__, __LINE__ + 1
      def #{attribute}
        _read_attribute(:#{attribute}) || []
      end
    CODE
  end

  mixin.class_eval <<~CODE, __FILE__, __LINE__ + 1
    def #{store}=(given)
      if given.is_a?(::String)
        given = ActiveSupport::JSON.decode(given) rescue nil
      end

      if AssociateJsonb.merge_hash?(self.class.attribute_types["#{store}"])
        if !given
          given = {}
          #{store}.keys.each do |k|
            given[k] = nil
          end
        end
        super(#{store}.deep_merge(given.deep_stringify_keys))

        self.#{attribute}= #{store}["#{key}"] if #{store}.key?("#{key}")
      else
        super given || {}
        self.#{attribute}= #{store}["#{key}"]
      end

      #{store}
    end

    def #{attribute}=(given)
      #{on_attr_change}
      value = #{store}["#{key}"] = #{attribute}.presence
      #{store}.delete("#{key}") unless !value.nil? || AssociateJsonb.merge_hash?(self.class.attribute_types["#{store}"])
      value
    end
  CODE
end