ditkrg/active_model_serializers
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Start cleaning up serializers to support

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include/exclude functionality.

This process involves building a few lower-level
primitives so not as much logic is hardcoded in
monolithic helper methods.
This commit is contained in:
Yehuda Katz
2012-01-11 12:18:18 -07:00
parent ab1a4074ba
commit f9d0259340
2 changed files with 113 additions and 20 deletions
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66
lib/active_model/serializer.rb
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@@ -94,44 +94,44 @@ module ActiveModel
end
class HasMany < Config #:nodoc:
alias plural_key key
def serialize(collection, scope, context, options)
array = collection.map do |item|
collection.map do |item|
find_serializable(item, scope, context, options).as_json(:root => false)
end
{ key => array }
end
alias serialize_many serialize
def serialize_ids(collection, scope)
# Use pluck or select_columns if available
# return collection.ids if collection.respond_to?(:ids)
array = collection.map do |item|
collection.map do |item|
item.read_attribute_for_serialization(:id)
end
{ key => array }
end
end
class HasOne < Config #:nodoc:
def plural_key
key.to_s.pluralize.to_sym
end
def serialize(object, scope, context, options)
{ key => object && find_serializable(object, scope, context, options).as_json(:root => false) }
object && find_serializable(object, scope, context, options).as_json(:root => false)
end
def serialize_many(object, scope, context, options)
key = self.key.to_s.pluralize.to_sym
value = object && find_serializable(object, scope, context, options).as_json(:root => false)
value = value ? [value] : []
{ key => value }
value ? [value] : []
end
def serialize_ids(object, scope)
if object
{ key => object.read_attribute_for_serialization(:id) }
object.read_attribute_for_serialization(:id)
else
{ key => nil }
nil
end
end
end
@@ -307,15 +307,41 @@ module ActiveModel
end
end
def include!(key, options={})
embed = options[:embed]
root_embed = options[:include]
hash = options[:hash]
node = options[:node]
value = options[:value]
serializer = options[:serializer]
scope = options[:scope]
association = Associations::HasMany.new(key, { :serializer => serializer })
if embed == :ids
node[key] = association.serialize_ids(value, scope)
if root_embed
merge_association hash, key, association.serialize_many(value, scope, self, {})
end
elsif embed == :objects
node[key] = association.serialize(value, scope)
end
end
# Merge associations for embed case by always adding
# root associations to the given hash.
def merge_associations(hash, associations)
associations.each do |key, value|
if hash[key]
hash[key] |= value
elsif value
hash[key] = value
end
merge_association(hash, key, value)
end
end
def merge_association(hash, key, value)
if hash[key]
hash[key] |= value
elsif value
hash[key] = value
end
end
@@ -326,7 +352,7 @@ module ActiveModel
_associations.each do |association|
associated_object = send(association.name)
hash.merge! association.serialize(associated_object, scope, self, :hash => @hash)
hash[association.key] = association.serialize(associated_object, scope, self, :hash => @hash)
end
hash
@@ -337,7 +363,7 @@ module ActiveModel
_associations.each do |association|
associated_object = send(association.name)
hash.merge! association.serialize_many(associated_object, scope, self, :hash => @hash)
hash[association.plural_key] = association.serialize_many(associated_object, scope, self, :hash => @hash)
end
hash
@@ -350,7 +376,7 @@ module ActiveModel
_associations.each do |association|
associated_object = send(association.name)
hash.merge! association.serialize_ids(associated_object, scope)
hash[association.key] = association.serialize_ids(associated_object, scope)
end
hash