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Refactor relation building to be more modular

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Benjamin Fleischer 2017-06-29 10:48:48 -05:00
parent f3fde8605b
commit 6db19f70a1
1 changed files with 83 additions and 29 deletions
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112
lib/ams/serializer.rb
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@ -136,6 +136,9 @@ module AMS
# relation :articles, type: :articles, to: :many, key: :posts, ids: "object.article_ids"
# relation :article, type: :articles, to: :one, key: :post
# relation :article, type: :articles, to: :one, key: :post, id: "object.article_id"
#
# #=> { data: { id: 1, type: :users} }
# #=> { data: [ { id: 1, type: :users}, { id: 2, type: :users] } }
def relation(relation_name, type:, to:, key: relation_name, **options)
_fields << key
_relations[relation_name] = { key: key, type: type, to: to }
@ -154,8 +157,19 @@ module AMS
# object.aritcles.pluck(:id)
# end
#
# def related_articles_data
# related_articles_ids.map {|id| relationship_data(id, :articles) }
# end
#
# def related_articles_links
# related_link_to_many(:articles)
# end
#
# def articles
# relationship_object(related_articles_ids, :articles)
# {}.tap do |hash|
# hash[:data] = related_articles_data
# hash[:links] = related_articles_links if link_builder?
# end
# end
#
# @example
@ -165,8 +179,19 @@ module AMS
# object.article_ids
# end
#
# def related_articles_data
# related_articles_ids.map {|id| relationship_data(id, :articles) }
# end
#
# def related_articles_links
# related_link_to_many(:articles)
# end
#
# def articles
# relationship_object(related_articles_ids, :articles)
# {}.tap do |hash|
# hash[:data] = related_articles_data
# hash[:links] = related_articles_links if link_builder?
# end
# end
def _relation_to_many(relation_name, type:, key: relation_name, **options)
ids_method = options.fetch(:ids) do
@ -176,9 +201,23 @@ module AMS
def related_#{relation_name}_ids
#{ids_method}
end
METHOD
add_instance_method <<-METHOD
def related_#{relation_name}_data
related_#{relation_name}_ids.map { |id| relationship_data(id, "#{type}") }
end
METHOD
add_instance_method <<-METHOD
def related_#{relation_name}_links
related_link_to_many("#{type}")
end
METHOD
add_instance_method <<-METHOD
def #{relation_name}
relationship_object(related_#{relation_name}_ids, "#{type}")
{}.tap do |hash|
hash[:data] = related_#{relation_name}_data
hash[:links] = related_#{relation_name}_links if link_builder?
end
end
METHOD
end
@ -190,8 +229,19 @@ module AMS
# object.article.id
# end
#
# def related_article_data
# relationship_data(related_article_id, :articles)
# end
#
# def related_article_links
# related_link_to_one(:articles)
# end
#
# def article
# relationship_object(related_article_id, :articles)
# {}.tap do |hash|
# hash[:data] = related_article_data
# hash[:links] = related_article_links if link_builder?
# end
# end
#
# @example
@ -201,8 +251,19 @@ module AMS
# object.article_id
# end
#
# def related_article_data
# relationship_data(related_article_id, :articles)
# end
#
# def related_article_links
# related_link_to_one(:articles)
# end
#
# def article
# relationship_object(related_article_id, :articles)
# {}.tap do |hash|
# hash[:data] = related_article_data
# hash[:links] = related_article_links if link_builder?
# end
# end
def _relation_to_one(relation_name, type:, key: relation_name, **options)
id_method = options.fetch(:id) do
@ -212,10 +273,23 @@ module AMS
def related_#{relation_name}_id
#{id_method}
end
METHOD
add_instance_method <<-METHOD
def related_#{relation_name}_data
relationship_data(related_#{relation_name}_id, "#{type}")
end
METHOD
add_instance_method <<-METHOD
def related_#{relation_name}_links
related_link_to_one("#{type}")
end
METHOD
add_instance_method <<-METHOD
def #{relation_name}
id = related_#{relation_name}_id
relationship_object(id, "#{type}")
{}.tap do |hash|
hash[:data] = related_#{relation_name}_data
hash[:links] = related_#{relation_name}_links if link_builder?
end
end
METHOD
end
@ -343,26 +417,6 @@ module AMS
self.class._relations
end
# Builds a relationship object
#
# @example
# relationship_object(1, :users)
# #=> { data: { id: 1, type: :users} }
#
# relationship_object([1,2], :users)
# #=> { data: [ { id: 1, type: :users}, { id: 2, type: :users] } }
def relationship_object(id_or_ids, type)
{}.tap do |hash|
if id_or_ids.respond_to?(:to_ary)
hash[:data] = id_or_ids.map { |id| relationship_data(id, type) }
hash[:links] = related_link_to_many(type) if link_builder?
else
hash[:data] = relationship_data(id_or_ids, type)
hash[:links] = related_link_to_one(id_or_ids, type) if link_builder?
end
end
end
# resource linkage
def relationship_data(id, type)
{ "id": id, "type": type }