Class: Guacamole::Proxies::Proxy

Inherits:
BasicObject
Defined in:
lib/guacamole/proxies/proxy.rb

Overview

This is the base class for the association proxies. Proxies are only needed for non-embedded relations between objects. Embedded objects are taken care of by Virtus.

The Proxy class undefines most methods and passes them to the @target. The @target will be a lambda which will lazy query the requested objects from the database.

Concrete proxy classes are:

  • ReferencedBy: This will handle one-to-many associations
  • References: This will handle many-to-one associations

Direct Known Subclasses

Relation

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

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



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# File 'lib/guacamole/proxies/proxy.rb', line 33

def method_missing(meth, *args, &blk)
  target.call.send meth, *args, &blk
end

Instance Method Details

#init(base, target) ⇒ Object

Convenience method to setup the proxy. The subclasses need to care of creating the target correctly.

Parameters:

  • base (Object) —

    The class holding the reference. Currently not used.

  • target (#call) —

    The lambda for getting the required objects from the database.



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# File 'lib/guacamole/proxies/proxy.rb', line 28

def init(base, target)
  @base   = base
  @target = target
end

#respond_to_missing?(name, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/guacamole/proxies/proxy.rb', line 37

def respond_to_missing?(name, include_private = false)
  target.respond_to?(name, include_private)
end

#target ⇒ Object 



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# File 'lib/guacamole/proxies/proxy.rb', line 41

def target
  @target || ->() { nil }
end