Class: Sequel::Plugins::AssociationProxies::AssociationProxy

Inherits:
BasicObject
Defined in:
lib/sequel/plugins/association_proxies.rb

Overview

A proxy for the association. Calling an array method will load the associated objects and call the method on the associated object array. Calling any other method will call that method on the association's dataset.

Constant Summary

DEFAULT_PROXY_TO_DATASET =

Default proc used to determine whether to sent the method to the dataset. If the array would respond to it, sends it to the array instead of the dataset.

proc{|opts| !array.respond_to?(opts[:method])}

Constants inherited from BasicObject

BasicObject::KEEP_METHODS

Instance Method Summary collapse

Methods inherited from BasicObject

const_missing, remove_methods!

Constructor Details

#initialize(instance, reflection, proxy_argument, &proxy_block) ⇒ AssociationProxy

Set the association reflection to use, and whether the association should be reloaded if an array method is called.



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# File 'lib/sequel/plugins/association_proxies.rb', line 70

def initialize(instance, reflection, proxy_argument, &proxy_block)
  @instance = instance
  @reflection = reflection
  @proxy_argument = proxy_argument
  @proxy_block = proxy_block
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(meth, *args, &block) ⇒ Object

Call the method given on the array of associated objects if the method is an array method, otherwise call the method on the association's dataset.



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# File 'lib/sequel/plugins/association_proxies.rb', line 79

def method_missing(meth, *args, &block)
  v = if @instance.model.association_proxy_to_dataset.call(:method=>meth, :arguments=>args, :block=>block, :instance=>@instance, :reflection=>@reflection, :proxy_argument=>@proxy_argument, :proxy_block=>@proxy_block)
    @instance.send(@reflection.dataset_method)
  else
    @instance.send(:load_associated_objects, @reflection, @proxy_argument, &@proxy_block)
  end
  v.send(meth, *args, &block)
end