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Contents
module Spyke
module Associations
class HasMany < Association
def initialize(*args)
super
@options.reverse_merge!(uri: "#{parent_path}/:#{foreign_key}/#{@name}/(:#{primary_key})")
@params[foreign_key] = parent.id
end
def load
self
end
def assign_nested_attributes(incoming)
incoming = incoming.values if incoming.is_a?(Hash)
combined_attributes = combine_with_existing(incoming)
clear_existing!
combined_attributes.each do |attributes|
build(attributes)
end
end
private
def parent_path
parent.class.model_name.element.pluralize
end
def combine_with_existing(incoming)
return incoming unless primary_keys_present_in_existing?
combined = embedded_attributes + incoming
group_by_primary_key(combined).flat_map do |primary_key, hashes|
if primary_key.present?
hashes.reduce(:merge)
else
hashes
end
end
end
def group_by_primary_key(array)
array.group_by { |h| h.with_indifferent_access[primary_key].to_s }
end
def primary_keys_present_in_existing?
embedded_attributes && embedded_attributes.any? { |attr| attr.has_key?(primary_key) }
end
def clear_existing!
update_parent []
end
def embedded_attributes
@embedded_attributes ||= parent.attributes.to_params[name]
end
def add_to_parent(record)
parent.attributes[name] ||= []
parent.attributes[name] << record
record
end
end
end
end
Version data entries
23 entries across 23 versions & 1 rubygems