Module: CouchbaseOrm::EmbedsOne

Included in:
Base
Defined in:
lib/couchbase-orm/utilities/embeds_one.rb

Instance Method Summary collapse

Instance Method Details

#embeds_one(name, class_name: nil, store_as: nil, validate: true) ⇒ Object 



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# File 'lib/couchbase-orm/utilities/embeds_one.rb', line 5

def embeds_one(name, class_name: nil, store_as: nil, validate: true)
  storage_key = (store_as || name).to_sym
  attribute storage_key, :hash, default: nil

  instance_var = "@__assoc_#{name}"
  klass_name = (class_name || name.to_s.camelize)

  set_embedded(name, {
    type: :one,
    class_name: klass_name, # keep as string to delay resolution
    key: storage_key,
    name: name,
    instance_var: instance_var,
  })

  validates_embedded(name) if validate

  # Helper to lazy-resolve class when needed
  define_method("_resolve_embedded_class_for_#{name}") do
    @__resolved_classes ||= {}
    @__resolved_classes[name] ||= begin
      klass_name.constantize
    rescue NameError => e
      warn "WARNING: #{klass_name} could not be resolved in #{self.class.name}: #{e.message}"
      raise
    end
  end

  define_method(name) do
    return instance_variable_get(instance_var) if instance_variable_defined?(instance_var)

    raw = read_attribute(storage_key)
    return instance_variable_set(instance_var, nil) unless raw.present?

    klass = send("_resolve_embedded_class_for_#{name}")
    obj = klass.new(raw)
    obj.embedded = true
    instance_variable_set(instance_var, obj)
  end

  define_method("#{name}=") do |val|
    if val.nil?
      write_attribute(storage_key, nil)
      instance_variable_set(instance_var, nil)
      next
    end

    klass = send("_resolve_embedded_class_for_#{name}")
    obj = val.is_a?(klass) ? val : klass.new(val)
    obj.embedded = true

    raw = obj.serialized_attributes
    raw.delete('id') if raw['id'].blank?

    write_attribute(storage_key, raw)
    instance_variable_set(instance_var, obj)
  end

  define_method(:"#{name}_reset") do
    remove_instance_variable(instance_var) if instance_variable_defined?(instance_var)
  end
end