69 lines
2.2 KiB
Ruby
69 lines
2.2 KiB
Ruby
module ActionWebService
|
|
# To send structured types across the wire, derive from ActionWebService::Struct,
|
|
# and use +member+ to declare structure members.
|
|
#
|
|
# ActionWebService::Struct should be used in method signatures when you want to accept or return
|
|
# structured types that have no Active Record model class representations, or you don't
|
|
# want to expose your entire Active Record model to remote callers.
|
|
#
|
|
# === Example
|
|
#
|
|
# class Person < ActionWebService::Struct
|
|
# member :id, :int
|
|
# member :firstnames, [:string]
|
|
# member :lastname, :string
|
|
# member :email, :string
|
|
# end
|
|
# person = Person.new(:id => 5, :firstname => 'john', :lastname => 'doe')
|
|
#
|
|
# Active Record model classes are already implicitly supported in method
|
|
# signatures.
|
|
class Struct
|
|
# Action WebService Struct subclasses should be reloaded by the dispatcher in Rails
|
|
# when Dependencies.mechanism = :load.
|
|
include Reloadable::Subclasses
|
|
|
|
# If a Hash is given as argument to an ActionWebService::Struct constructor,
|
|
# it can contain initial values for the structure member.
|
|
def initialize(values={})
|
|
if values.is_a?(Hash)
|
|
values.map{|k,v| __send__('%s=' % k.to_s, v)}
|
|
end
|
|
end
|
|
|
|
# The member with the given name
|
|
def [](name)
|
|
send(name.to_s)
|
|
end
|
|
|
|
# Iterates through each member
|
|
def each_pair(&block)
|
|
self.class.members.each do |name, type|
|
|
yield name, self.__send__(name)
|
|
end
|
|
end
|
|
|
|
class << self
|
|
# Creates a structure member with the specified +name+ and +type+. Generates
|
|
# accessor methods for reading and writing the member value.
|
|
def member(name, type)
|
|
name = name.to_sym
|
|
type = ActionWebService::SignatureTypes.canonical_signature_entry({ name => type }, 0)
|
|
write_inheritable_hash("struct_members", name => type)
|
|
class_eval <<-END
|
|
def #{name}; @#{name}; end
|
|
def #{name}=(value); @#{name} = value; end
|
|
END
|
|
end
|
|
|
|
def members # :nodoc:
|
|
read_inheritable_attribute("struct_members") || {}
|
|
end
|
|
|
|
def member_type(name) # :nodoc:
|
|
members[name.to_sym]
|
|
end
|
|
end
|
|
end
|
|
end
|