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Mongoid::Relations::Builders::NestedAttributes::One

Attributes

destroy[RW]

Public Instance Methods

build(parent) click to toggle source

Builds the relation depending on the attributes and the options passed to the macro.

This attempts to perform 3 operations, either one of an update of the existing relation, a replacement of the relation with a new document, or a removal of the relation.

Example:

one.build(person)

Options:

parent: The parent document of the relation.

# File lib/mongoid/relations/builders/nested_attributes/one.rb, line 23
def build(parent)
  return if reject?(parent, attributes)
  @existing = parent.send(metadata.name)
  if update?
    existing.attributes = attributes
  elsif replace?
    parent.send(metadata.setter, Mongoid::Factory.build(metadata.klass, attributes))
  elsif delete?
    parent.send(metadata.setter, nil)
  end
end

Public Class Methods

new(metadata, attributes, options) click to toggle source

Create the new builder for nested attributes on one-to-one relations.

Example:

One.new(metadata, attributes, options)

Options:

metadata: The relation metadata attributes: The attributes hash to attempt to set. options: The options defined.

Returns:

A new builder.

# File lib/mongoid/relations/builders/nested_attributes/one.rb, line 51
def initialize(metadata, attributes, options)
  @attributes = attributes.with_indifferent_access
  @metadata = metadata
  @options = options
  @destroy = @attributes.delete(:_destroy)
end

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